From 7a57201ca327ac964375f7b79452f9b8e4e628ab Mon Sep 17 00:00:00 2001
From: Sven Augustin <sven.augustin@psi.ch>
Date: Thu, 3 Oct 2024 12:13:39 +0200
Subject: [PATCH] fixed dtype of "roi_intensities_normalised" if
 threshold_value != "NaN"

---
 dap/algos/roi.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dap/algos/roi.py b/dap/algos/roi.py
index e144370..451416b 100644
--- a/dap/algos/roi.py
+++ b/dap/algos/roi.py
@@ -37,7 +37,7 @@ def calc_roi(results, data, pixel_mask_pf):
             roi_area = (ix2 - ix1) * (iy2 - iy1)
             roi_sum_norm = roi_sum / roi_area
         else:
-            roi_sum_norm = np.nanmean(data_roi)
+            roi_sum_norm = np.nanmean(data_roi, dtype=float) # data_roi is np.float32, which cannot be json serialized
 
         roi_indices_x = [ix1, ix2]
         roi_proj_x = np.nansum(data_roi, axis=0).tolist()