zero-step in np.arange (#1468)

2020-12-18 07:48:55 +01:00 · 2020-12-18 07:48:55 +01:00 · c5c41b9090
commit c5c41b9090
parent 3af23725ca
1 changed files with 3 additions and 1 deletions
--- a/pyqtgraph/graphicsItems/ImageItem.py
+++ b/pyqtgraph/graphicsItems/ImageItem.py
@ -491,7 +491,9 @@ class ImageItem(GraphicsObject):
            if stepData.dtype.kind in "ui":
                # For integer data, we select the bins carefully to avoid aliasing
                step = np.ceil((mx-mn) / 500.)
-                bins = np.arange(mn, mx+1.01*step, step, dtype=np.int)
+                bins = []
+                if step > 0.0:
+                    bins = np.arange(mn, mx+1.01*step, step, dtype=np.int)
            else:
                # for float data, let numpy select the bins.
                bins = np.linspace(mn, mx, 500)