diff --git a/daqbuffer/src/test/binnedjson.rs b/daqbuffer/src/test/binnedjson.rs
index c3892d0..add377f 100644
--- a/daqbuffer/src/test/binnedjson.rs
+++ b/daqbuffer/src/test/binnedjson.rs
@@ -21,6 +21,7 @@ async fn get_binned_json_0_inner() -> Result<(), Error> {
         "1970-01-01T00:20:10.000Z",
         "1970-01-01T01:20:30.000Z",
         10,
+        AggKind::DimXBins1,
         cluster,
         13,
         true,
@@ -41,6 +42,7 @@ async fn get_binned_json_1_inner() -> Result<(), Error> {
         "1970-01-01T00:20:10.000Z",
         "1970-01-01T01:20:45.000Z",
         10,
+        AggKind::DimXBins1,
         cluster,
         13,
         true,
@@ -48,17 +50,38 @@ async fn get_binned_json_1_inner() -> Result<(), Error> {
     .await
 }
 
+#[test]
+fn get_binned_json_2() {
+    taskrun::run(get_binned_json_2_inner()).unwrap();
+}
+
+async fn get_binned_json_2_inner() -> Result<(), Error> {
+    let rh = require_test_hosts_running()?;
+    let cluster = &rh.cluster;
+    get_binned_json_common(
+        "wave-f64-be-n21",
+        "1970-01-01T00:20:10.000Z",
+        "1970-01-01T02:20:10.000Z",
+        2,
+        AggKind::DimXBinsN(0),
+        cluster,
+        2,
+        true,
+    )
+    .await
+}
+
 async fn get_binned_json_common(
     channel_name: &str,
     beg_date: &str,
     end_date: &str,
     bin_count: u32,
+    agg_kind: AggKind,
     cluster: &Cluster,
     expect_bin_count: u32,
     expect_finalised_range: bool,
 ) -> Result<(), Error> {
     let t1 = Utc::now();
-    let agg_kind = AggKind::DimXBins1;
     let node0 = &cluster.nodes[0];
     let beg_date: DateTime<Utc> = beg_date.parse()?;
     let end_date: DateTime<Utc> = end_date.parse()?;
diff --git a/disk/src/agg/binnedt.rs b/disk/src/agg/binnedt.rs
index 8489dcb..7add8a1 100644
--- a/disk/src/agg/binnedt.rs
+++ b/disk/src/agg/binnedt.rs
@@ -28,7 +28,7 @@ pub trait TimeBinnableType:
 {
     type Output: TimeBinnableType;
     type Aggregator: TimeBinnableTypeAggregator<Input = Self, Output = Self::Output> + Send + Unpin;
-    fn aggregator(range: NanoRange) -> Self::Aggregator;
+    fn aggregator(range: NanoRange, bin_count: usize) -> Self::Aggregator;
 }
 
 pub struct TBinnerStream<S, TBT>
@@ -38,6 +38,7 @@ where
 {
     inp: Pin<Box<S>>,
     spec: BinnedRange,
+    bin_count: usize,
     curbin: u32,
     left: Option<Poll<Option<Sitemty<TBT>>>>,
     aggtor: Option<<TBT as TimeBinnableType>::Aggregator>,
@@ -55,14 +56,15 @@ where
     S: Stream<Item = Sitemty<TBT>> + Send + Unpin + 'static,
     TBT: TimeBinnableType,
 {
-    pub fn new(inp: S, spec: BinnedRange) -> Self {
+    pub fn new(inp: S, spec: BinnedRange, bin_count: usize) -> Self {
         let range = spec.get_range(0);
         Self {
             inp: Box::pin(inp),
             spec,
+            bin_count,
             curbin: 0,
             left: None,
-            aggtor: Some(<TBT as TimeBinnableType>::aggregator(range)),
+            aggtor: Some(<TBT as TimeBinnableType>::aggregator(range, bin_count)),
             tmp_agg_results: VecDeque::new(),
             inp_completed: false,
             all_bins_emitted: false,
@@ -90,7 +92,7 @@ where
         let range = self.spec.get_range(self.curbin);
         let ret = self
             .aggtor
-            .replace(<TBT as TimeBinnableType>::aggregator(range))
+            .replace(<TBT as TimeBinnableType>::aggregator(range, self.bin_count))
             .unwrap()
             .result();
         // TODO should we accumulate bins before emit? Maybe not, we want to stay responsive.
diff --git a/disk/src/agg/enp.rs b/disk/src/agg/enp.rs
index 8cd5139..e89d1f1 100644
--- a/disk/src/agg/enp.rs
+++ b/disk/src/agg/enp.rs
@@ -3,12 +3,12 @@ use crate::agg::streams::Appendable;
 use crate::agg::{Fits, FitsInside};
 use crate::binned::dim1::MinMaxAvgDim1Bins;
 use crate::binned::{
-    EventsNodeProcessor, FilterFittingInside, MinMaxAvgBins, NumOps, PushableIndex, RangeOverlapInfo, ReadPbv,
-    ReadableFromFile, WithLen, WithTimestamps,
+    EventsNodeProcessor, FilterFittingInside, MinMaxAvgBins, MinMaxAvgWaveBins, NumOps, PushableIndex,
+    RangeOverlapInfo, ReadPbv, ReadableFromFile, WithLen, WithTimestamps,
 };
 use crate::decode::EventValues;
 use err::Error;
-use netpod::NanoRange;
+use netpod::{NanoRange, Shape};
 use serde::{Deserialize, Serialize};
 use std::marker::PhantomData;
 use tokio::fs::File;
@@ -24,11 +24,16 @@ where
     type Input = NTY;
     type Output = EventValues<NTY>;
 
-    fn process(inp: EventValues<Self::Input>) -> Self::Output {
+    fn create(shape: Shape) -> Self {
+        Self { _m1: PhantomData }
+    }
+
+    fn process(&self, inp: EventValues<Self::Input>) -> Self::Output {
         inp
     }
 }
 
+// TODO rename Scalar -> Dim0
 #[derive(Serialize, Deserialize)]
 pub struct XBinnedScalarEvents<NTY> {
     tss: Vec<u64>,
@@ -169,7 +174,7 @@ where
     type Output = MinMaxAvgBins<NTY>;
     type Aggregator = XBinnedScalarEventsAggregator<NTY>;
 
-    fn aggregator(range: NanoRange) -> Self::Aggregator {
+    fn aggregator(range: NanoRange, bin_count: usize) -> Self::Aggregator {
         Self::Aggregator::new(range)
     }
 }
@@ -269,6 +274,241 @@ where
     }
 }
 
+// TODO  rename Wave -> Dim1
+#[derive(Serialize, Deserialize)]
+pub struct XBinnedWaveEvents<NTY> {
+    tss: Vec<u64>,
+    mins: Vec<Vec<NTY>>,
+    maxs: Vec<Vec<NTY>>,
+    avgs: Vec<Vec<f32>>,
+}
+
+impl<NTY> XBinnedWaveEvents<NTY> {
+    pub fn empty() -> Self {
+        Self {
+            tss: vec![],
+            mins: vec![],
+            maxs: vec![],
+            avgs: vec![],
+        }
+    }
+}
+
+impl<NTY> WithLen for XBinnedWaveEvents<NTY> {
+    fn len(&self) -> usize {
+        self.tss.len()
+    }
+}
+
+impl<NTY> WithTimestamps for XBinnedWaveEvents<NTY> {
+    fn ts(&self, ix: usize) -> u64 {
+        self.tss[ix]
+    }
+}
+
+impl<NTY> RangeOverlapInfo for XBinnedWaveEvents<NTY> {
+    fn ends_before(&self, range: NanoRange) -> bool {
+        match self.tss.last() {
+            Some(&ts) => ts < range.beg,
+            None => true,
+        }
+    }
+
+    fn ends_after(&self, range: NanoRange) -> bool {
+        match self.tss.last() {
+            Some(&ts) => ts >= range.end,
+            None => panic!(),
+        }
+    }
+
+    fn starts_after(&self, range: NanoRange) -> bool {
+        match self.tss.first() {
+            Some(&ts) => ts >= range.end,
+            None => panic!(),
+        }
+    }
+}
+
+impl<NTY> FitsInside for XBinnedWaveEvents<NTY> {
+    fn fits_inside(&self, range: NanoRange) -> Fits {
+        if self.tss.is_empty() {
+            Fits::Empty
+        } else {
+            let t1 = *self.tss.first().unwrap();
+            let t2 = *self.tss.last().unwrap();
+            if t2 < range.beg {
+                Fits::Lower
+            } else if t1 > range.end {
+                Fits::Greater
+            } else if t1 < range.beg && t2 > range.end {
+                Fits::PartlyLowerAndGreater
+            } else if t1 < range.beg {
+                Fits::PartlyLower
+            } else if t2 > range.end {
+                Fits::PartlyGreater
+            } else {
+                Fits::Inside
+            }
+        }
+    }
+}
+
+impl<NTY> FilterFittingInside for XBinnedWaveEvents<NTY> {
+    fn filter_fitting_inside(self, fit_range: NanoRange) -> Option<Self> {
+        match self.fits_inside(fit_range) {
+            Fits::Inside | Fits::PartlyGreater | Fits::PartlyLower | Fits::PartlyLowerAndGreater => Some(self),
+            _ => None,
+        }
+    }
+}
+
+impl<NTY> PushableIndex for XBinnedWaveEvents<NTY>
+where
+    NTY: NumOps,
+{
+    fn push_index(&mut self, src: &Self, ix: usize) {
+        self.tss.push(src.tss[ix]);
+        self.mins.push(src.mins[ix]);
+        self.maxs.push(src.maxs[ix]);
+        self.avgs.push(src.avgs[ix]);
+    }
+}
+
+impl<NTY> Appendable for XBinnedWaveEvents<NTY>
+where
+    NTY: NumOps,
+{
+    fn empty() -> Self {
+        Self::empty()
+    }
+
+    fn append(&mut self, src: &Self) {
+        self.tss.extend_from_slice(&src.tss);
+        self.mins.extend_from_slice(&src.mins);
+        self.maxs.extend_from_slice(&src.maxs);
+        self.avgs.extend_from_slice(&src.avgs);
+    }
+}
+
+impl<NTY> ReadableFromFile for XBinnedWaveEvents<NTY>
+where
+    NTY: NumOps,
+{
+    fn read_from_file(_file: File) -> Result<ReadPbv<Self>, Error> {
+        // TODO refactor types such that this impl is not needed.
+        panic!()
+    }
+
+    fn from_buf(_buf: &[u8]) -> Result<Self, Error> {
+        panic!()
+    }
+}
+
+impl<NTY> TimeBinnableType for XBinnedWaveEvents<NTY>
+where
+    NTY: NumOps,
+{
+    type Output = MinMaxAvgWaveBins<NTY>;
+    type Aggregator = XBinnedWaveEventsAggregator<NTY>;
+
+    fn aggregator(range: NanoRange, bin_count: usize) -> Self::Aggregator {
+        Self::Aggregator::new(range, bin_count)
+    }
+}
+
+pub struct XBinnedWaveEventsAggregator<NTY>
+where
+    NTY: NumOps,
+{
+    range: NanoRange,
+    count: u64,
+    min: Vec<NTY>,
+    max: Vec<NTY>,
+    sum: Vec<f32>,
+    sumc: u64,
+}
+
+impl<NTY> XBinnedWaveEventsAggregator<NTY>
+where
+    NTY: NumOps,
+{
+    pub fn new(range: NanoRange, bin_count: usize) -> Self {
+        Self {
+            range,
+            count: 0,
+            min: vec![NTY::min_or_nan(); bin_count],
+            max: vec![NTY::max_or_nan(); bin_count],
+            sum: vec![0f32; bin_count],
+            sumc: 0,
+        }
+    }
+}
+
+impl<NTY> TimeBinnableTypeAggregator for XBinnedWaveEventsAggregator<NTY>
+where
+    NTY: NumOps,
+{
+    type Input = XBinnedWaveEvents<NTY>;
+    type Output = MinMaxAvgWaveBins<NTY>;
+
+    fn range(&self) -> &NanoRange {
+        &self.range
+    }
+
+    fn ingest(&mut self, item: &Self::Input) {
+        for i1 in 0..item.tss.len() {
+            let ts = item.tss[i1];
+            if ts < self.range.beg {
+                continue;
+            } else if ts >= self.range.end {
+                continue;
+            } else {
+                for (i2, v) in item.mins[i1].iter().enumerate() {
+                    if *v < self.min[i2] || self.min[i2].is_nan() {
+                        self.min[i2] = *v;
+                    }
+                }
+                for (i2, v) in item.maxs[i1].iter().enumerate() {
+                    if *v > self.max[i2] || self.max[i2].is_nan() {
+                        self.max[i2] = *v;
+                    }
+                }
+                for (i2, v) in item.avgs[i1].iter().enumerate() {
+                    if v.is_nan() {
+                    } else {
+                        self.sum[i2] += v;
+                    }
+                }
+                self.sumc += 1;
+                self.count += 1;
+            }
+        }
+    }
+
+    fn result(self) -> Self::Output {
+        if self.sumc == 0 {
+            Self::Output {
+                ts1s: vec![self.range.beg],
+                ts2s: vec![self.range.end],
+                counts: vec![self.count],
+                mins: vec![None],
+                maxs: vec![None],
+                avgs: vec![None],
+            }
+        } else {
+            let avg = self.sum.iter().map(|k| *k / self.sumc as f32).collect();
+            Self::Output {
+                ts1s: vec![self.range.beg],
+                ts2s: vec![self.range.end],
+                counts: vec![self.count],
+                mins: vec![Some(self.min)],
+                maxs: vec![Some(self.max)],
+                avgs: vec![Some(avg)],
+            }
+        }
+    }
+}
+
 #[derive(Serialize, Deserialize)]
 pub struct WaveEvents<NTY> {
     pub tss: Vec<u64>,
@@ -398,8 +638,8 @@ where
     type Output = MinMaxAvgDim1Bins<NTY>;
     type Aggregator = WaveEventsAggregator<NTY>;
 
-    fn aggregator(range: NanoRange) -> Self::Aggregator {
-        Self::Aggregator::new(range)
+    fn aggregator(range: NanoRange, bin_count: usize) -> Self::Aggregator {
+        Self::Aggregator::new(range, bin_count)
     }
 }
 
@@ -419,11 +659,12 @@ impl<NTY> WaveEventsAggregator<NTY>
 where
     NTY: NumOps,
 {
-    pub fn new(range: NanoRange) -> Self {
+    pub fn new(range: NanoRange, bin_count: usize) -> Self {
         Self {
             range,
             count: 0,
-            min: None,
+            // TODO create the right number of bins right here:
+            min: err::todoval(),
             max: None,
             sumc: 0,
             sum: None,
@@ -525,9 +766,13 @@ where
     type Input = Vec<NTY>;
     type Output = XBinnedScalarEvents<NTY>;
 
-    fn process(inp: EventValues<Self::Input>) -> Self::Output {
+    fn create(shape: Shape) -> Self {
+        Self { _m1: PhantomData }
+    }
+
+    fn process(&self, inp: EventValues<Self::Input>) -> Self::Output {
         let nev = inp.tss.len();
-        let mut ret = XBinnedScalarEvents {
+        let mut ret = Self::Output {
             tss: inp.tss,
             xbincount: Vec::with_capacity(nev),
             mins: Vec::with_capacity(nev),
@@ -535,6 +780,8 @@ where
             avgs: Vec::with_capacity(nev),
         };
         for i1 in 0..nev {
+            // TODO why do I work here with Option?
+            err::todo();
             let mut min = None;
             let mut max = None;
             let mut sum = 0f32;
@@ -584,6 +831,7 @@ where
 }
 
 pub struct WaveNBinner<NTY> {
+    bin_count: usize,
     _m1: PhantomData<NTY>,
 }
 
@@ -592,11 +840,60 @@ where
     NTY: NumOps,
 {
     type Input = Vec<NTY>;
-    // TODO need new container type for this case:
-    type Output = XBinnedScalarEvents<NTY>;
+    type Output = XBinnedWaveEvents<NTY>;
 
-    fn process(_inp: EventValues<Self::Input>) -> Self::Output {
-        err::todoval()
+    fn create(shape: Shape) -> Self {
+        // TODO get rid of panic potential
+        let bin_count = if let Shape::Wave(n) = shape { n } else { panic!() } as usize;
+        Self {
+            bin_count,
+            _m1: PhantomData,
+        }
+    }
+
+    fn process(&self, inp: EventValues<Self::Input>) -> Self::Output {
+        let nev = inp.tss.len();
+        let mut ret = Self::Output {
+            tss: inp.tss,
+            mins: Vec::with_capacity(nev),
+            maxs: Vec::with_capacity(nev),
+            avgs: Vec::with_capacity(nev),
+        };
+        for i1 in 0..nev {
+            let mut min = vec![NTY::min_or_nan(); self.bin_count];
+            let mut max = vec![NTY::max_or_nan(); self.bin_count];
+            let mut sum = vec![0f32; self.bin_count];
+            let mut sumc = vec![0; self.bin_count];
+            for (i2, &v) in inp.values[i1].iter().enumerate() {
+                let i3 = i2 * self.bin_count / inp.values[i1].len();
+                if v < min[i3] {
+                    min[i3] = v;
+                }
+                if v > max[i3] {
+                    max[i3] = v;
+                }
+                if v.is_nan() {
+                } else {
+                    sum[i3] += v.as_();
+                    sumc[i3] += 1;
+                }
+            }
+            ret.mins.push(min);
+            ret.maxs.push(max);
+            let avg = sum
+                .iter()
+                .enumerate()
+                .map(|(i3, &k)| {
+                    if sumc[i3] > 0 {
+                        sum[i3] / sumc[i3] as f32
+                    } else {
+                        f32::NAN
+                    }
+                })
+                .collect();
+            ret.avgs.push(avg);
+        }
+        ret
     }
 }
 
@@ -611,7 +908,11 @@ where
     type Input = Vec<NTY>;
     type Output = WaveEvents<NTY>;
 
-    fn process(inp: EventValues<Self::Input>) -> Self::Output {
+    fn create(shape: Shape) -> Self {
+        Self { _m1: PhantomData }
+    }
+
+    fn process(&self, inp: EventValues<Self::Input>) -> Self::Output {
         if false {
             let n = if inp.values.len() > 0 { inp.values[0].len() } else { 0 };
             let n = if n > 5 { 5 } else { n };
diff --git a/disk/src/binned.rs b/disk/src/binned.rs
index 917a683..47f6764 100644
--- a/disk/src/binned.rs
+++ b/disk/src/binned.rs
@@ -23,13 +23,14 @@ use futures_util::{FutureExt, StreamExt};
 use netpod::log::*;
 use netpod::timeunits::SEC;
 use netpod::{
-    BinnedRange, ByteOrder, NanoRange, NodeConfigCached, PerfOpts, PreBinnedPatchIterator, PreBinnedPatchRange,
-    ScalarType, Shape,
+    AggKind, BinnedRange, ByteOrder, NanoRange, NodeConfigCached, PerfOpts, PreBinnedPatchIterator,
+    PreBinnedPatchRange, ScalarType, Shape,
 };
-use num_traits::{AsPrimitive, Bounded, Zero};
+use num_traits::{AsPrimitive, Bounded, Float, Zero};
 use parse::channelconfig::{extract_matching_config_entry, read_local_config, MatchingConfigEntry};
 use serde::de::DeserializeOwned;
 use serde::{Deserialize, Serialize, Serializer};
+use std::fmt;
 use std::fmt::Debug;
 use std::future::Future;
 use std::marker::PhantomData;
@@ -122,8 +123,13 @@ where
                 range: query.range().clone(),
                 agg_kind: query.agg_kind().clone(),
             };
+            let x_bin_count = if let AggKind::DimXBinsN(n) = query.agg_kind() {
+                *n as usize
+            } else {
+                0
+            };
             let s = MergedFromRemotes::<ENP>::new(evq, perf_opts, node_config.node_config.cluster.clone());
-            let s = TBinnerStream::<_, <ENP as EventsNodeProcessor>::Output>::new(s, range);
+            let s = TBinnerStream::<_, <ENP as EventsNodeProcessor>::Output>::new(s, range, x_bin_count);
             let ret = BinnedResponseStat {
                 stream: Box::pin(s),
                 bin_count,
@@ -770,13 +776,47 @@ pub trait NumOps:
     + Serialize
     + DeserializeOwned
 {
+    fn min_or_nan() -> Self;
+    fn max_or_nan() -> Self;
+    fn is_nan(&self) -> bool;
 }
 
-impl<T> NumOps for T where
-    T: Send + Unpin + Debug + Zero + AsPrimitive<f32> + Bounded + PartialOrd + SubFrId + Serialize + DeserializeOwned
-{
+fn tmp() {}
+macro_rules! impl_num_ops {
+    ($ty:ident, $min_or_nan:ident, $max_or_nan:ident, $is_nan:ident) => {
+        impl NumOps for $ty {
+            fn min_or_nan() -> Self {
+                $ty::$min_or_nan
+            }
+            fn max_or_nan() -> Self {
+                $ty::$max_or_nan
+            }
+            fn is_nan(&self) -> bool {
+                $is_nan(self)
+            }
+        }
+    };
 }
 
+fn is_nan_int<T>(x: &T) -> bool {
+    false
+}
+
+fn is_nan_float<T: Float>(x: &T) -> bool {
+    x.is_nan()
+}
+
+impl_num_ops!(u8, MIN, MAX, is_nan_int);
+impl_num_ops!(u16, MIN, MAX, is_nan_int);
+impl_num_ops!(u32, MIN, MAX, is_nan_int);
+impl_num_ops!(u64, MIN, MAX, is_nan_int);
+impl_num_ops!(i8, MIN, MAX, is_nan_int);
+impl_num_ops!(i16, MIN, MAX, is_nan_int);
+impl_num_ops!(i32, MIN, MAX, is_nan_int);
+impl_num_ops!(i64, MIN, MAX, is_nan_int);
+impl_num_ops!(f32, NAN, NAN, is_nan_float);
+impl_num_ops!(f64, NAN, NAN, is_nan_float);
+
 pub trait EventsDecoder {
     type Output;
     fn ingest(&mut self, event: &[u8]);
@@ -786,7 +826,8 @@ pub trait EventsDecoder {
 pub trait EventsNodeProcessor: Send + Unpin {
     type Input;
     type Output: Send + Unpin + DeserializeOwned + WithTimestamps + TimeBinnableType;
-    fn process(inp: EventValues<Self::Input>) -> Self::Output;
+    fn create(shape: Shape) -> Self;
+    fn process(&self, inp: EventValues<Self::Input>) -> Self::Output;
 }
 
 pub trait TimeBins: Send + Unpin + WithLen + Appendable + FilterFittingInside {
@@ -799,16 +840,17 @@ pub struct MinMaxAvgBins<NTY> {
     pub ts1s: Vec<u64>,
     pub ts2s: Vec<u64>,
     pub counts: Vec<u64>,
+    // TODO get rid of Option:
     pub mins: Vec<Option<NTY>>,
     pub maxs: Vec<Option<NTY>>,
     pub avgs: Vec<Option<f32>>,
 }
 
-impl<NTY> std::fmt::Debug for MinMaxAvgBins<NTY>
+impl<NTY> fmt::Debug for MinMaxAvgBins<NTY>
 where
-    NTY: std::fmt::Debug,
+    NTY: fmt::Debug,
 {
-    fn fmt(&self, fmt: &mut std::fmt::Formatter) -> std::fmt::Result {
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
         write!(
             fmt,
             "MinMaxAvgBins  count {}  ts1s {:?}  ts2s {:?}  counts {:?}  mins {:?}  maxs {:?}  avgs {:?}",
@@ -951,7 +993,7 @@ where
     type Output = MinMaxAvgBins<NTY>;
     type Aggregator = MinMaxAvgBinsAggregator<NTY>;
 
-    fn aggregator(range: NanoRange) -> Self::Aggregator {
+    fn aggregator(range: NanoRange, bin_count: usize) -> Self::Aggregator {
         Self::Aggregator::new(range)
     }
 }
@@ -1103,7 +1145,8 @@ impl<NTY> EventValuesAggregator<NTY> {
         Self {
             range,
             count: 0,
-            min: None,
+            // TODO get rid of Option
+            min: err::todoval(),
             max: None,
             sumc: 0,
             sum: 0f32,
@@ -1282,3 +1325,400 @@ pub enum RangeCompletableItem<T> {
     RangeComplete,
     Data(T),
 }
+
+#[derive(Clone, Serialize, Deserialize)]
+pub struct MinMaxAvgWaveBins<NTY> {
+    pub ts1s: Vec<u64>,
+    pub ts2s: Vec<u64>,
+    pub counts: Vec<u64>,
+    pub mins: Vec<Option<Vec<NTY>>>,
+    pub maxs: Vec<Option<Vec<NTY>>>,
+    pub avgs: Vec<Option<Vec<f32>>>,
+}
+
+impl<NTY> fmt::Debug for MinMaxAvgWaveBins<NTY>
+where
+    NTY: fmt::Debug,
+{
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
+        write!(
+            fmt,
+            "MinMaxAvgBins  count {}  ts1s {:?}  ts2s {:?}  counts {:?}  mins {:?}  maxs {:?}  avgs {:?}",
+            self.ts1s.len(),
+            self.ts1s.iter().map(|k| k / SEC).collect::<Vec<_>>(),
+            self.ts2s.iter().map(|k| k / SEC).collect::<Vec<_>>(),
+            self.counts,
+            self.mins,
+            self.maxs,
+            self.avgs,
+        )
+    }
+}
+
+impl<NTY> MinMaxAvgWaveBins<NTY> {
+    pub fn empty() -> Self {
+        Self {
+            ts1s: vec![],
+            ts2s: vec![],
+            counts: vec![],
+            mins: vec![],
+            maxs: vec![],
+            avgs: vec![],
+        }
+    }
+}
+
+impl<NTY> FitsInside for MinMaxAvgWaveBins<NTY> {
+    fn fits_inside(&self, range: NanoRange) -> Fits {
+        if self.ts1s.is_empty() {
+            Fits::Empty
+        } else {
+            let t1 = *self.ts1s.first().unwrap();
+            let t2 = *self.ts2s.last().unwrap();
+            if t2 <= range.beg {
+                Fits::Lower
+            } else if t1 >= range.end {
+                Fits::Greater
+            } else if t1 < range.beg && t2 > range.end {
+                Fits::PartlyLowerAndGreater
+            } else if t1 < range.beg {
+                Fits::PartlyLower
+            } else if t2 > range.end {
+                Fits::PartlyGreater
+            } else {
+                Fits::Inside
+            }
+        }
+    }
+}
+
+impl<NTY> FilterFittingInside for MinMaxAvgWaveBins<NTY> {
+    fn filter_fitting_inside(self, fit_range: NanoRange) -> Option<Self> {
+        match self.fits_inside(fit_range) {
+            Fits::Inside | Fits::PartlyGreater | Fits::PartlyLower | Fits::PartlyLowerAndGreater => Some(self),
+            _ => None,
+        }
+    }
+}
+
+impl<NTY> RangeOverlapInfo for MinMaxAvgWaveBins<NTY> {
+    fn ends_before(&self, range: NanoRange) -> bool {
+        match self.ts2s.last() {
+            Some(&ts) => ts <= range.beg,
+            None => true,
+        }
+    }
+
+    fn ends_after(&self, range: NanoRange) -> bool {
+        match self.ts2s.last() {
+            Some(&ts) => ts > range.end,
+            None => panic!(),
+        }
+    }
+
+    fn starts_after(&self, range: NanoRange) -> bool {
+        match self.ts1s.first() {
+            Some(&ts) => ts >= range.end,
+            None => panic!(),
+        }
+    }
+}
+
+impl<NTY> TimeBins for MinMaxAvgWaveBins<NTY>
+where
+    NTY: NumOps,
+{
+    fn ts1s(&self) -> &Vec<u64> {
+        &self.ts1s
+    }
+
+    fn ts2s(&self) -> &Vec<u64> {
+        &self.ts2s
+    }
+}
+
+impl<NTY> WithLen for MinMaxAvgWaveBins<NTY> {
+    fn len(&self) -> usize {
+        self.ts1s.len()
+    }
+}
+
+impl<NTY> Appendable for MinMaxAvgWaveBins<NTY>
+where
+    NTY: NumOps,
+{
+    fn empty() -> Self {
+        Self::empty()
+    }
+
+    fn append(&mut self, src: &Self) {
+        self.ts1s.extend_from_slice(&src.ts1s);
+        self.ts2s.extend_from_slice(&src.ts2s);
+        self.counts.extend_from_slice(&src.counts);
+        self.mins.extend_from_slice(&src.mins);
+        self.maxs.extend_from_slice(&src.maxs);
+        self.avgs.extend_from_slice(&src.avgs);
+    }
+}
+
+impl<NTY> ReadableFromFile for MinMaxAvgWaveBins<NTY>
+where
+    NTY: NumOps,
+{
+    // TODO this function is not needed in the trait:
+    fn read_from_file(file: File) -> Result<ReadPbv<Self>, Error> {
+        Ok(ReadPbv::new(file))
+    }
+
+    fn from_buf(buf: &[u8]) -> Result<Self, Error> {
+        let dec = serde_cbor::from_slice(&buf)?;
+        Ok(dec)
+    }
+}
+
+impl<NTY> TimeBinnableType for MinMaxAvgWaveBins<NTY>
+where
+    NTY: NumOps,
+{
+    type Output = MinMaxAvgWaveBins<NTY>;
+    type Aggregator = MinMaxAvgWaveBinsAggregator<NTY>;
+
+    fn aggregator(range: NanoRange, x_bin_count: usize) -> Self::Aggregator {
+        Self::Aggregator::new(range, x_bin_count)
+    }
+}
+
+impl<NTY> ToJsonResult for Sitemty<MinMaxAvgWaveBins<NTY>>
+where
+    NTY: NumOps,
+{
+    fn to_json_result(&self) -> Result<Box<dyn ToJsonBytes>, Error> {
+        Ok(Box::new(serde_json::Value::String(format!(
+            "MinMaxAvgBins/non-json-item"
+        ))))
+    }
+}
+
+pub struct MinMaxAvgWaveBinsCollected<NTY> {
+    _m1: PhantomData<NTY>,
+}
+
+impl<NTY> MinMaxAvgWaveBinsCollected<NTY> {
+    pub fn new() -> Self {
+        Self { _m1: PhantomData }
+    }
+}
+
+#[derive(Serialize)]
+pub struct MinMaxAvgWaveBinsCollectedResult<NTY> {
+    ts0: u64,
+    tsoff: Vec<u64>,
+    //ts_bin_edges: Vec<IsoDateTime>,
+    counts: Vec<u64>,
+    mins: Vec<Option<Vec<NTY>>>,
+    maxs: Vec<Option<Vec<NTY>>>,
+    avgs: Vec<Option<Vec<f32>>>,
+    #[serde(skip_serializing_if = "Bool::is_false", rename = "finalisedRange")]
+    finalised_range: bool,
+    #[serde(skip_serializing_if = "Zero::is_zero", rename = "missingBins")]
+    missing_bins: u32,
+    #[serde(skip_serializing_if = "Option::is_none", rename = "continueAt")]
+    //continue_at: Option<IsoDateTime>,
+    continue_at: Option<u64>,
+}
+
+pub struct MinMaxAvgWaveBinsCollector<NTY> {
+    bin_count_exp: u32,
+    timed_out: bool,
+    range_complete: bool,
+    vals: MinMaxAvgWaveBins<NTY>,
+    _m1: PhantomData<NTY>,
+}
+
+impl<NTY> MinMaxAvgWaveBinsCollector<NTY> {
+    pub fn new(bin_count_exp: u32) -> Self {
+        Self {
+            bin_count_exp,
+            timed_out: false,
+            range_complete: false,
+            vals: MinMaxAvgWaveBins::<NTY>::empty(),
+            _m1: PhantomData,
+        }
+    }
+}
+
+impl<NTY> WithLen for MinMaxAvgWaveBinsCollector<NTY>
+where
+    NTY: NumOps + Serialize,
+{
+    fn len(&self) -> usize {
+        self.vals.ts1s.len()
+    }
+}
+
+impl<NTY> Collector for MinMaxAvgWaveBinsCollector<NTY>
+where
+    NTY: NumOps + Serialize,
+{
+    type Input = MinMaxAvgWaveBins<NTY>;
+    type Output = MinMaxAvgWaveBinsCollectedResult<NTY>;
+
+    fn ingest(&mut self, src: &Self::Input) {
+        Appendable::append(&mut self.vals, src);
+    }
+
+    fn set_range_complete(&mut self) {
+        self.range_complete = true;
+    }
+
+    fn set_timed_out(&mut self) {
+        self.timed_out = true;
+    }
+
+    fn result(self) -> Result<Self::Output, Error> {
+        let ts0 = self.vals.ts1s.first().map_or(0, |k| *k / SEC);
+        let bin_count = self.vals.ts1s.len() as u32;
+        let mut tsoff: Vec<_> = self.vals.ts1s.iter().map(|k| *k - ts0 * SEC).collect();
+        if let Some(&k) = self.vals.ts2s.last() {
+            tsoff.push(k - ts0 * SEC);
+        }
+        let tsoff = tsoff;
+        let _iso: Vec<_> = tsoff
+            .iter()
+            .map(|&k| IsoDateTime(Utc.timestamp_nanos(k as i64)))
+            .collect();
+        let continue_at = if self.vals.ts1s.len() < self.bin_count_exp as usize {
+            match tsoff.last() {
+                Some(k) => Some(k.clone()),
+                None => Err(Error::with_msg("partial_content but no bin in result"))?,
+            }
+        } else {
+            None
+        };
+        let ret = MinMaxAvgWaveBinsCollectedResult {
+            ts0,
+            tsoff,
+            counts: self.vals.counts,
+            mins: self.vals.mins,
+            maxs: self.vals.maxs,
+            avgs: self.vals.avgs,
+            finalised_range: self.range_complete,
+            missing_bins: self.bin_count_exp - bin_count,
+            continue_at,
+        };
+        Ok(ret)
+    }
+}
+
+impl<NTY> Collectable for MinMaxAvgWaveBins<NTY>
+where
+    NTY: NumOps + Serialize,
+{
+    type Collector = MinMaxAvgWaveBinsCollector<NTY>;
+
+    fn new_collector(bin_count_exp: u32) -> Self::Collector {
+        Self::Collector::new(bin_count_exp)
+    }
+}
+
+pub struct MinMaxAvgWaveBinsAggregator<NTY> {
+    range: NanoRange,
+    count: u64,
+    min: Vec<NTY>,
+    max: Vec<NTY>,
+    sum: Vec<f32>,
+    sumc: u64,
+}
+
+impl<NTY> MinMaxAvgWaveBinsAggregator<NTY>
+where
+    NTY: NumOps,
+{
+    pub fn new(range: NanoRange, x_bin_count: usize) -> Self {
+        Self {
+            range,
+            count: 0,
+            min: vec![NTY::min_or_nan(); x_bin_count],
+            max: vec![NTY::max_or_nan(); x_bin_count],
+            sum: vec![0f32; x_bin_count],
+            sumc: 0,
+        }
+    }
+}
+
+impl<NTY> TimeBinnableTypeAggregator for MinMaxAvgWaveBinsAggregator<NTY>
+where
+    NTY: NumOps,
+{
+    type Input = MinMaxAvgWaveBins<NTY>;
+    type Output = MinMaxAvgWaveBins<NTY>;
+
+    fn range(&self) -> &NanoRange {
+        &self.range
+    }
+
+    fn ingest(&mut self, item: &Self::Input) {
+        for i1 in 0..item.ts1s.len() {
+            if item.ts2s[i1] <= self.range.beg {
+                continue;
+            } else if item.ts1s[i1] >= self.range.end {
+                continue;
+            } else {
+                // the input can contain bins where no events did fall into.
+                match &item.mins[i1] {
+                    None => {}
+                    Some(inp) => {
+                        for (a, b) in self.min.iter_mut().zip(inp.iter()) {
+                            if *b < *a {
+                                *a = *b;
+                            }
+                        }
+                    }
+                }
+                match &item.maxs[i1] {
+                    None => {}
+                    Some(inp) => {
+                        for (a, b) in self.max.iter_mut().zip(inp.iter()) {
+                            if *b > *a {
+                                *a = *b;
+                            }
+                        }
+                    }
+                }
+                match &item.avgs[i1] {
+                    None => {}
+                    Some(inp) => {
+                        for (a, b) in self.sum.iter_mut().zip(inp.iter()) {
+                            *a += *b;
+                        }
+                    }
+                }
+                self.sumc += 1;
+                self.count += item.counts[i1];
+            }
+        }
+    }
+
+    fn result(self) -> Self::Output {
+        if self.sumc == 0 {
+            Self::Output {
+                ts1s: vec![self.range.beg],
+                ts2s: vec![self.range.end],
+                counts: vec![self.count],
+                mins: vec![None],
+                maxs: vec![None],
+                avgs: vec![None],
+            }
+        } else {
+            let avg = self.sum.iter().map(|j| *j / self.sumc as f32).collect();
+            Self::Output {
+                ts1s: vec![self.range.beg],
+                ts2s: vec![self.range.end],
+                counts: vec![self.count],
+                mins: vec![Some(self.min)],
+                maxs: vec![Some(self.max)],
+                avgs: vec![Some(avg)],
+            }
+        }
+    }
+}
diff --git a/disk/src/binned/dim1.rs b/disk/src/binned/dim1.rs
index fc70776..5fd0537 100644
--- a/disk/src/binned/dim1.rs
+++ b/disk/src/binned/dim1.rs
@@ -173,7 +173,7 @@ where
     type Output = MinMaxAvgDim1Bins<NTY>;
     type Aggregator = MinMaxAvgDim1BinsAggregator<NTY>;
 
-    fn aggregator(range: NanoRange) -> Self::Aggregator {
+    fn aggregator(range: NanoRange, bin_count: usize) -> Self::Aggregator {
         Self::Aggregator::new(range)
     }
 }
@@ -317,11 +317,12 @@ pub struct MinMaxAvgDim1BinsAggregator<NTY> {
 }
 
 impl<NTY> MinMaxAvgDim1BinsAggregator<NTY> {
-    pub fn new(range: NanoRange) -> Self {
+    pub fn new(range: NanoRange, bin_count: usize) -> Self {
         Self {
             range,
             count: 0,
-            min: None,
+            // TODO get rid of Option
+            min: err::todoval(),
             max: None,
             sumc: 0,
             sum: None,
diff --git a/disk/src/binned/query.rs b/disk/src/binned/query.rs
index dcf6704..992a13f 100644
--- a/disk/src/binned/query.rs
+++ b/disk/src/binned/query.rs
@@ -57,11 +57,7 @@ impl PreBinnedQuery {
             .map_err(|e| Error::with_msg(format!("can not parse diskStatsEveryKb {:?}", e)))?;
         let ret = Self {
             patch: PreBinnedPatchCoord::new(bin_t_len, patch_t_len, patch_ix),
-            agg_kind: params
-                .get("aggKind")
-                .map_or(&format!("{}", AggKind::DimXBins1), |k| k)
-                .parse()
-                .map_err(|e| Error::with_msg(format!("can not parse aggKind {:?}", e)))?,
+            agg_kind: agg_kind_from_binning_scheme(&params).unwrap_or(AggKind::DimXBins1),
             channel: channel_from_params(&params)?,
             cache_usage: CacheUsage::from_params(&params)?,
             disk_stats_every: ByteSize::kb(disk_stats_every),
@@ -76,11 +72,11 @@ impl PreBinnedQuery {
 
     pub fn make_query_string(&self) -> String {
         format!(
-            "{}&channelBackend={}&channelName={}&aggKind={}&cacheUsage={}&diskStatsEveryKb={}&reportError={}",
+            "{}&channelBackend={}&channelName={}&binningScheme={}&cacheUsage={}&diskStatsEveryKb={}&reportError={}",
             self.patch.to_url_params_strings(),
             self.channel.backend,
             self.channel.name,
-            self.agg_kind,
+            binning_scheme_string(&self.agg_kind),
             self.cache_usage,
             self.disk_stats_every.bytes() / 1024,
             self.report_error(),
@@ -201,6 +197,7 @@ impl BinnedQuery {
             .parse()
             .map_err(|e| Error::with_msg(format!("can not parse diskStatsEveryKb {:?}", e)))?;
         let ret = Self {
+            channel: channel_from_params(&params)?,
             range: NanoRange {
                 beg: beg_date.parse::<DateTime<Utc>>()?.to_nanos(),
                 end: end_date.parse::<DateTime<Utc>>()?.to_nanos(),
@@ -210,12 +207,7 @@ impl BinnedQuery {
                 .ok_or(Error::with_msg("missing binCount"))?
                 .parse()
                 .map_err(|e| Error::with_msg(format!("can not parse binCount {:?}", e)))?,
-            agg_kind: params
-                .get("aggKind")
-                .map_or(&format!("{}", AggKind::DimXBins1), |k| k)
-                .parse()
-                .map_err(|e| Error::with_msg(format!("can not parse aggKind {:?}", e)))?,
-            channel: channel_from_params(&params)?,
+            agg_kind: agg_kind_from_binning_scheme(&params).unwrap_or(AggKind::DimXBins1),
             cache_usage: CacheUsage::from_params(&params)?,
             disk_stats_every: ByteSize::kb(disk_stats_every),
             report_error: params
@@ -292,7 +284,7 @@ impl BinnedQuery {
     pub fn url(&self, host: &HostPort) -> String {
         let date_fmt = "%Y-%m-%dT%H:%M:%S.%3fZ";
         format!(
-            "http://{}:{}/api/4/binned?cacheUsage={}&channelBackend={}&channelName={}&binCount={}&begDate={}&endDate={}&diskStatsEveryKb={}&timeout={}&abortAfterBinCount={}",
+            "http://{}:{}/api/4/binned?cacheUsage={}&channelBackend={}&channelName={}&binCount={}&begDate={}&endDate={}&binningScheme={}&diskStatsEveryKb={}&timeout={}&abortAfterBinCount={}",
             host.host,
             host.port,
             self.cache_usage,
@@ -301,9 +293,35 @@ impl BinnedQuery {
             self.bin_count,
             Utc.timestamp_nanos(self.range.beg as i64).format(date_fmt),
             Utc.timestamp_nanos(self.range.end as i64).format(date_fmt),
+            binning_scheme_string(&self.agg_kind),
             self.disk_stats_every.bytes() / 1024,
             self.timeout.as_millis(),
             self.abort_after_bin_count,
         )
     }
 }
+
+fn binning_scheme_string(agg_kind: &AggKind) -> String {
+    match agg_kind {
+        AggKind::Plain => "fullValue".into(),
+        AggKind::DimXBins1 => "toScalarX".into(),
+        AggKind::DimXBinsN(n) => format!("binnedXcount{}", n),
+    }
+}
+
+fn agg_kind_from_binning_scheme(params: &BTreeMap<String, String>) -> Result<AggKind, Error> {
+    let key = "binningScheme";
+    let s = params
+        .get(key)
+        .map_or(Err(Error::with_msg(format!("can not find {}", key))), |k| Ok(k))?;
+    let ret = if s == "fullValue" {
+        AggKind::Plain
+    } else if s == "toScalarX" {
+        AggKind::DimXBins1
+    } else if s.starts_with("binnedXcount") {
+        AggKind::DimXBinsN(s[12..].parse()?)
+    } else {
+        return Err(Error::with_msg("can not extract binningScheme"));
+    };
+    Ok(ret)
+}
diff --git a/disk/src/decode.rs b/disk/src/decode.rs
index 16bcd69..c38968f 100644
--- a/disk/src/decode.rs
+++ b/disk/src/decode.rs
@@ -295,7 +295,7 @@ where
     type Output = MinMaxAvgBins<NTY>;
     type Aggregator = EventValuesAggregator<NTY>;
 
-    fn aggregator(range: NanoRange) -> Self::Aggregator {
+    fn aggregator(range: NanoRange, _bin_count: usize) -> Self::Aggregator {
         Self::Aggregator::new(range)
     }
 }
diff --git a/disk/src/frame/makeframe.rs b/disk/src/frame/makeframe.rs
index edac70f..fd5b1c3 100644
--- a/disk/src/frame/makeframe.rs
+++ b/disk/src/frame/makeframe.rs
@@ -1,4 +1,4 @@
-use crate::agg::enp::{WaveEvents, XBinnedScalarEvents};
+use crate::agg::enp::{WaveEvents, XBinnedScalarEvents, XBinnedWaveEvents};
 use crate::agg::eventbatch::MinMaxAvgScalarEventBatch;
 use crate::agg::scalarbinbatch::MinMaxAvgScalarBinBatch;
 use crate::agg::streams::StreamItem;
@@ -104,6 +104,13 @@ where
     const FRAME_TYPE_ID: u32 = 0x800 + NTY::SUB;
 }
 
+impl<NTY> FrameType for Sitemty<XBinnedWaveEvents<NTY>>
+where
+    NTY: SubFrId,
+{
+    const FRAME_TYPE_ID: u32 = 0x800 + NTY::SUB;
+}
+
 pub trait ProvidesFrameType {
     fn frame_type_id(&self) -> u32;
 }
@@ -160,6 +167,15 @@ where
     }
 }
 
+impl<NTY> Framable for Sitemty<XBinnedWaveEvents<NTY>>
+where
+    NTY: NumOps + Serialize,
+{
+    fn make_frame(&self) -> Result<BytesMut, Error> {
+        make_frame(self)
+    }
+}
+
 pub fn make_frame<FT>(item: &FT) -> Result<BytesMut, Error>
 where
     FT: FrameType + Serialize,
diff --git a/disk/src/raw/conn.rs b/disk/src/raw/conn.rs
index 66d7a5e..d76700a 100644
--- a/disk/src/raw/conn.rs
+++ b/disk/src/raw/conn.rs
@@ -96,18 +96,14 @@ impl<E: Into<Error>> From<(E, OwnedWriteHalf)> for ConnErr {
     }
 }
 
-// returns Pin<Box<dyn Stream<Item = Sitemty<<ENP as EventsNodeProcessor>::Output>> + Send>>
-
 fn make_num_pipeline_stream_evs<NTY, END, EVS, ENP>(
     event_value_shape: EVS,
+    events_node_proc: ENP,
     event_blobs: EventBlobsComplete,
 ) -> Pin<Box<dyn Stream<Item = Box<dyn Framable>> + Send>>
 where
     NTY: NumOps + NumFromBytes<NTY, END> + 'static,
     END: Endianness + 'static,
-
-    // TODO
-    // Can this work?
     EVS: EventValueShape<NTY, END> + EventValueFromBytes<NTY, END> + 'static,
     ENP: EventsNodeProcessor<Input = <EVS as EventValueFromBytes<NTY, END>>::Output>,
     Sitemty<<ENP as EventsNodeProcessor>::Output>: Framable + 'static,
@@ -118,7 +114,7 @@ where
         Ok(item) => match item {
             StreamItem::DataItem(item) => match item {
                 RangeCompletableItem::Data(item) => {
-                    let item = <ENP as EventsNodeProcessor>::process(item);
+                    let item = events_node_proc.process(item);
                     Ok(StreamItem::DataItem(RangeCompletableItem::Data(item)))
                 }
                 RangeCompletableItem::RangeComplete => Ok(StreamItem::DataItem(RangeCompletableItem::RangeComplete)),
@@ -133,30 +129,44 @@ where
 }
 
 macro_rules! pipe4 {
-    ($nty:ident, $end:ident, $evs:ident, $evsv:expr, $agg_kind:expr, $event_blobs:expr) => {
+    ($nty:ident, $end:ident, $shape:expr, $evs:ident, $evsv:expr, $agg_kind:expr, $event_blobs:expr) => {
         match $agg_kind {
             AggKind::DimXBins1 => make_num_pipeline_stream_evs::<
                 $nty,
                 $end,
                 $evs<$nty>,
-                <$evs<$nty> as EventValueShape<$nty, $end>>::NumXAggToSingleBin,
+                //<$evs<$nty> as EventValueShape<$nty, $end>>::NumXAggToSingleBin,
+                _,
                 //Identity<$nty>,
-            >($evsv, $event_blobs),
+            >(
+                $evsv,
+                <$evs<$nty> as EventValueShape<$nty, $end>>::NumXAggToSingleBin::create($shape),
+                $event_blobs,
+            ),
             AggKind::DimXBinsN(_) => make_num_pipeline_stream_evs::<
                 $nty,
                 $end,
                 $evs<$nty>,
-                // TODO must pass on the requested number of bins:
-                <$evs<$nty> as EventValueShape<$nty, $end>>::NumXAggToNBins,
+                //<$evs<$nty> as EventValueShape<$nty, $end>>::NumXAggToNBins,
+                _,
                 //WaveXBinner<$nty>,
-            >($evsv, $event_blobs),
+            >(
+                $evsv,
+                <$evs<$nty> as EventValueShape<$nty, $end>>::NumXAggToNBins::create($shape),
+                $event_blobs,
+            ),
             AggKind::Plain => make_num_pipeline_stream_evs::<
                 $nty,
                 $end,
                 $evs<$nty>,
-                <$evs<$nty> as EventValueShape<$nty, $end>>::NumXAggPlain,
+                //<$evs<$nty> as EventValueShape<$nty, $end>>::NumXAggPlain,
+                _,
                 //WaveXBinner<$nty>,
-            >($evsv, $event_blobs),
+            >(
+                $evsv,
+                <$evs<$nty> as EventValueShape<$nty, $end>>::NumXAggPlain::create($shape),
+                $event_blobs,
+            ),
         }
     };
 }
@@ -168,6 +178,7 @@ macro_rules! pipe3 {
                 pipe4!(
                     $nty,
                     $end,
+                    $shape,
                     EventValuesDim0Case,
                     EventValuesDim0Case::<$nty>::new(),
                     $agg_kind,
@@ -181,6 +192,7 @@ macro_rules! pipe3 {
                 pipe4!(
                     $nty,
                     $end,
+                    $shape,
                     EventValuesDim1Case,
                     EventValuesDim1Case::<$nty>::new(n),
                     $agg_kind,
@@ -258,6 +270,7 @@ async fn events_conn_handler_inner_try(
             return Err((Error::with_msg("json parse error"), netout))?;
         }
     };
+    info!("---------------------------------------------------\nevq {:?}", evq);
     match dbconn::channel_exists(&evq.channel, &node_config).await {
         Ok(_) => (),
         Err(e) => return Err((e, netout))?,