Script execution

script/BpmStats.py

@@ -0,0 +1,84 @@
+from startup import *
+from ijutils import *
+from ch.psi.pshell.imaging.Overlays import *
+import ch.psi.pshell.imaging.Pen as Pen
+import java.awt.Color as Color
+import random
+
+        
+       
+class BpmStats(DeviceBase):
+    def __init__(self, name, prefix ):
+        DeviceBase.__init__(self, name, read_interval = 0.1)
+        self.prefix = prefix
+        self.read_interval = read_interval
+        self.bpm_x = Channel(prefix + ":X1", type = 'd', name + " x")
+        self.bpm_y = Channel(prefix + ":Y1", type = 'd', name + " y")
+        self.com_x_samples, self.com_y_samples = [], []
+        class ComX(Readable):
+            def read(self):     
+                if len(self.image_stats.com_x_samples)==0: return None
+                return mean(self.image_stats.com_x_samples)
+        self.com_x_mean = ComX(); self.com_x_mean.image_stats = self
+        class ComY(Readable):
+            def read(self):     
+                if len(self.image_stats.com_y_samples)==0: return None
+                return mean(self.image_stats.com_y_samples)
+        self.com_y_mean = ComY(); self.com_y_mean.image_stats = self
+        class ComXVar(Readable):
+            def read(self):     
+                if len(self.image_stats.com_x_samples)==0: return None
+                return stdev(self.image_stats.com_x_samples)
+        self.com_x_stdev = ComXVar(); self.com_x_stdev.image_stats = self
+        class ComXVar(Readable):
+            def read(self):     
+                if len(self.image_stats.com_y_samples)==0: return None
+                return stdev(self.image_stats.com_y_samples)
+        self.com_y_stdev = ComXVar(); self.com_y_stdev.image_stats = self
+        set_device_alias(self.com_x_mean, name + " x mean")
+        set_device_alias(self.com_y_mean, name + " y mean")
+        set_device_alias(self.com_x_stdev, name + " x stdev")
+        set_device_alias(self.com_y_stdev, name + " y stdev")
+        self.num_images = 1
+        self.initialize()        
+    
+    
+    def doUpdate(self):        
+        self.com_x_samples, self.com_y_samples = [], []
+        for i in range(self.num_images):
+            time.sleep(self.read_interval)
+            cx = self.bpm_x.read()
+            cy = self.bpm_y.read()
+            print "centroid ",[cx,cy] 
+            if centroid is not None:
+                self.com_x_samples.append(cx)
+                self.com_y_samples.append(cy)
+
+    def setNumberOfImages(self, value):
+        self.num_images = value
+
+    def enableBackground(self, value):
+        pass
+        
+    def captureBackground(self, images):               
+        pass
+    
+    def doClose(self):        
+        pass    
+
+    def start(self):
+        pass
+
+    def stop(self):
+        pass
+        
+
+
+if __name__ == "__builtin__":
+    add_device(BpmStats("bpm com", "SINEG01-DBPM340"))
+    bpm_stats.setNumberOfImages(5)
+    for i in range (10):        
+        bpm_stats.update()        
+        print bpm_stats.take(), bpm_stats.com_x_mean.read(), bpm_stats.com_y_mean.read() 
+        time.sleep(1)
+