PyQTGraph ImageExporter bug related to image size

[ParisNeo]

Hi,

I am using pyqtgraph to produce plots in a PyQT window. I want to export PNG image of the graphs.

I have this error when I try to export my plots:

ImageExporter.py", line 70, in export bg = np.empty((self.params['width'], self.params['height'], 4), >dtype=np.ubyte) TypeError: 'float' object cannot be interpreted as an integer

I noticed that the self.params['width'] and self.params['height'] are floats. But np.empty can not create an erray using float sizes.

Even if i set the width and height manually using :

exporter.parameters()['width'] = self.raw_DataPlot.width()
exporter.parameters()['height'] = self.raw_DataPlot.height()
The results are floats.

I noticed that If I change the line 70 of ImageExporter.py to :

bg = np.empty((int(self.params['width']), int(self.params['height']), 4),dtype=np.ubyte)
The export works fine.

Is it possible to address this issue and update the library?

Thanks

[campagnola]

Hi @ParisNeo, this issue is already fixed and will be in the 0.11 release.

[ParisNeo]

Thanks alot.

I did make a workaround since then. I created my own exporter and placed it in my project. It is 100% complient with the ImageExporter so it would be easy for me to move back to the original one.

Thanks alot