# Wrong aspect ratio with onscreen pvpython

**URL:** https://discourse.paraview.org/t/wrong-aspect-ratio-with-onscreen-pvpython/4620
**Category:** ParaView Support
**Tags:** python
**Created:** [June 18, 2020, 4:25pm UTC](https://discourse.paraview.org/t/wrong-aspect-ratio-with-onscreen-pvpython/4620 "2020-06-18T16:25:32Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![idcbris](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/i/bbe5ce/32.png) [@idcbris](https://discourse.paraview.org/u/idcbris)
#### Post date: [June 18, 2020, 4:25pm UTC](https://discourse.paraview.org/t/wrong-aspect-ratio-with-onscreen-pvpython/4620/1 "2020-06-18T16:25:32Z")

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Hello,

I use paraview.simple and pvpython to generate bunch of pictures using a preset stored in a pvsm file. However I realised that the resolution of the pictures was not what I choose even after using

> renderView1.ViewSize = [1080, 1080]

I expect to obtain a square picture/movie but I obtain a 1080x1016 pixels picture, the pictures is then wider than what I see using paraview.  
This is the one using paraview and saving a screenshot

 ![correct_size](https://discourse.paraview.org/uploads/default/original/2X/f/f8bd09588fa149ae31a4b4339aaf3570ebc466fd.png)  
And that what’s pvpython windows that pops shows (same as pictures, the sides are more visible)  
 ![uncorrect_size](https://discourse.paraview.org/uploads/default/original/2X/1/1bdc3a0ca0b24f2ea5a5c0d47943cbaf2af337cf.png)

If I use the offscreen rendering I successfully get what I want, a 1080x1080 picture

I suspect the window decoration mess up things but I didn’t test much this assumption.

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [June 19, 2020, 1:28am UTC](https://discourse.paraview.org/t/wrong-aspect-ratio-with-onscreen-pvpython/4620/2 "2020-06-19T01:28:21Z")

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Which command do you use to save the screenshot ?

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### Author: ![idcbris](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/i/bbe5ce/32.png) [@idcbris](https://discourse.paraview.org/u/idcbris)
#### Post date: [June 19, 2020, 6:20am UTC](https://discourse.paraview.org/t/wrong-aspect-ratio-with-onscreen-pvpython/4620/3 "2020-06-19T06:20:03Z")

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I am saving the images as jpeg

> SaveAnimation(xxx.jpeg, renderView1, ImageResolution=[1080, 1080],Quality=100)

The same applies to the SaveScreenshot function which gives the same (wrong) aspect ratio

> SaveScreenshot(‘xxx.png’, renderView1, ImageResolution=[1080, 1080],  
> FontScaling=‘Scale fonts proportionally’,  
> OverrideColorPalette=‘’,  
> StereoMode=‘No change’,  
> TransparentBackground=0,  
> CompressionLevel=‘5’)

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [June 19, 2020, 9:25am UTC](https://discourse.paraview.org/t/wrong-aspect-ratio-with-onscreen-pvpython/4620/4 "2020-06-19T09:25:28Z")

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What is your window manager ?

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<div class="post-metadata">

### Author: ![idcbris](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/i/bbe5ce/32.png) [@idcbris](https://discourse.paraview.org/u/idcbris)
#### Post date: [June 19, 2020, 9:31am UTC](https://discourse.paraview.org/t/wrong-aspect-ratio-with-onscreen-pvpython/4620/5 "2020-06-19T09:31:59Z")

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I use native ubuntu 20.04  
So it’s GNOME 3.36.2 at the moment.

I should probably mention that my screen is full hd hence 1080 pixels is the max displayable height. So I wonder if this is just a restriction of the onscreen rendering about the resolution of the display.

However Paraview produces proper images even for higher resolution.