From 618d9e9617950b85f34f5468cfc5013096571b68 Mon Sep 17 00:00:00 2001
From: Thomas VINCENT <thomas.vincent@esrf.fr>
Date: Thu, 4 Apr 2024 09:42:17 +0200
Subject: [PATCH] Fix deprecated trapz in numpy2, renamed trapezoid

---
 examples/plotStats.py                         |  9 +++++++--
 src/silx/gui/plot/CurvesROIWidget.py          | 12 +++++++++---
 src/silx/gui/plot/test/testCurvesROIWidget.py |  9 +++++++--
 3 files changed, 23 insertions(+), 7 deletions(-)

diff --git a/examples/plotStats.py b/examples/plotStats.py
index dd6e4f8d2e..b9cf197681 100644
--- a/examples/plotStats.py
+++ b/examples/plotStats.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # /*##########################################################################
 #
-# Copyright (c) 2016-2021 European Synchrotron Radiation Facility
+# Copyright (c) 2016-2024 European Synchrotron Radiation Facility
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
@@ -51,6 +51,11 @@
 import numpy
 import time
 
+try:
+    from numpy import trapezoid
+except ImportError:  # numpy v1 compatibility
+    from numpy import trapz as trapezoid
+
 
 class UpdateThread(threading.Thread):
     """Thread updating the curve of a :class:`~silx.gui.plot.Plot1D`
@@ -96,7 +101,7 @@ def __init__(self):
 
     def calculate(self, context):
         xData, yData = context.data
-        return numpy.trapz(x=xData, y=yData)
+        return trapezoid(x=xData, y=yData)
 
 
 class COM(StatBase):
diff --git a/src/silx/gui/plot/CurvesROIWidget.py b/src/silx/gui/plot/CurvesROIWidget.py
index bd47da0b38..7b4469926f 100644
--- a/src/silx/gui/plot/CurvesROIWidget.py
+++ b/src/silx/gui/plot/CurvesROIWidget.py
@@ -1,6 +1,6 @@
 # /*##########################################################################
 #
-# Copyright (c) 2004-2023 European Synchrotron Radiation Facility
+# Copyright (c) 2004-2024 European Synchrotron Radiation Facility
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
@@ -37,6 +37,12 @@
 import sys
 import functools
 import numpy
+
+try:
+    from numpy import trapezoid
+except ImportError:  # numpy v1 compatibility
+    from numpy import trapz as trapezoid
+
 from silx.io import dictdump
 from silx.utils.weakref import WeakMethodProxy
 from silx.utils.proxy import docstring
@@ -1240,13 +1246,13 @@ def computeRawAndNetArea(self, curve):
         if x.size == 0:
             return 0.0, 0.0
 
-        rawArea = numpy.trapz(y, x=x)
+        rawArea = trapezoid(y, x=x)
         # to speed up and avoid an intersection calculation we are taking the
         # closest index to the ROI
         closestXLeftIndex = (numpy.abs(x - self.getFrom())).argmin()
         closestXRightIndex = (numpy.abs(x - self.getTo())).argmin()
         yBackground = y[closestXLeftIndex], y[closestXRightIndex]
-        background = numpy.trapz(yBackground, x=x)
+        background = trapezoid(yBackground, x=x)
         netArea = rawArea - background
         return rawArea, netArea
 
diff --git a/src/silx/gui/plot/test/testCurvesROIWidget.py b/src/silx/gui/plot/test/testCurvesROIWidget.py
index 05acd366b2..c8f2b94707 100644
--- a/src/silx/gui/plot/test/testCurvesROIWidget.py
+++ b/src/silx/gui/plot/test/testCurvesROIWidget.py
@@ -1,6 +1,6 @@
 # /*##########################################################################
 #
-# Copyright (c) 2016-2023 European Synchrotron Radiation Facility
+# Copyright (c) 2016-2024 European Synchrotron Radiation Facility
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
@@ -32,6 +32,11 @@
 import os.path
 import numpy
 
+try:
+    from numpy import trapezoid
+except ImportError:  # numpy v1 compatibility
+    from numpy import trapz as trapezoid
+
 from silx.gui import qt
 from silx.gui.plot import items
 from silx.gui.plot import Plot1D
@@ -171,7 +176,7 @@ def testAreaCalculation(self):
 
         self.assertEqual(
             roi_pos.computeRawAndNetArea(posCurve),
-            (numpy.trapz(y=[10, 20], x=[10, 20]), 0.0),
+            (trapezoid(y=[10, 20], x=[10, 20]), 0.0),
         )
         self.assertEqual(roi_pos.computeRawAndNetArea(negCurve), (0.0, 0.0))
         self.assertEqual(roi_neg.computeRawAndNetArea(posCurve), ((0.0), 0.0))