fix log mode by reverting to previous formulation

this formulation is in the documentation for setLogMode()
2021-08-01 10:45:29 +08:00 · 2021-08-01 10:45:29 +08:00 · aebc66dcaa
commit aebc66dcaa
parent 6a59b7e5b5
1 changed files with 1 additions and 1 deletions
--- a/pyqtgraph/graphicsItems/PlotDataItem.py
+++ b/pyqtgraph/graphicsItems/PlotDataItem.py
@ -701,7 +701,7 @@ class PlotDataItem(GraphicsObject):
                    eps = np.finfo(y.dtype).eps
                else:
                    eps = 1
-                y = np.copysign(np.log10(np.abs(y)+eps), y)
+                y = np.sign(y) * np.log10(np.abs(y)+eps)

        ds = self.opts['downsample']
        if not isinstance(ds, int):