[Paraview] Paraview 4.3.1 Python - Screenshot of specific size and ratio

Mon Sep 14 17:43:57 EDT 2015

Not sure I said that I'm on Mac OS X. 
Re: palette. No reason, I prefer a white background and I was experimenting with the colour mappings from colorbrewer

Sent from Outlook

On Mon, Sep 14, 2015 at 9:51 AM -0700, "Dan Lipsa" <dan.lipsa at kitware.com> wrote:

Hmm,I tried ~/ParaView-4.3.1-Linux-64bit/bin/pvpython test.py

and still created the right png - see attached.I notice you have a different color palette. Why is that?

On Mon, Sep 14, 2015 at 8:11 AM, Ruggiero Guida <ruggiero.guida at gmail.com> wrote:
Thanks Dan.
Run you script through pvpython. No modifications apart from the filenames. I still have an image with 1000x855 size (see attached).
I will try to build paraview from source to see if this changes.
Thanks

On 12 September 2015 at 02:04, Dan Lipsa <dan.lipsa at kitware.com> wrote:
Ruggiero,Attached is the script I used on ParaView master. It saves a 1000x1000 png. I had to uncomment renderView1.ViewSize and change the magnification for SaveScreenshot to 1.
Dan

On Thu, Sep 10, 2015 at 9:38 PM, Ruggiero Guida <ruggiero.guida at gmail.com> wrote:
Attached. Thanks for checking. 
On 11 September 2015 at 09:34, Dan Lipsa <dan.lipsa at kitware.com> wrote:
If you send me your test.vtk I can try to generate the script on my machine.
Dan

On Thu, Sep 10, 2015 at 9:10 PM, Ruggiero Guida <ruggiero.guida at gmail.com> wrote:
I am using the 4.3.1 binary version downloaded from the website. I generated my script starting from the trace as you suggest. Uncommenting the ViewSize on your script works. The fact is that it does not work on mine and i really don't understand why. I guess it is related to the settings of the camera.
Have you tried to run my script on your machine? I would expect to have a square image with the data fitted perfectly into it, but as soon as I increase the ViewSize above 855x855, only the horizontal size increases. As you can see from the VTK the source data is 24x24.
Thanks

On 11 September 2015 at 08:51, Dan Lipsa <dan.lipsa at kitware.com> wrote:
What version of ParaView do you use? I run the script on a ParaView source build from git master.

You should be able to do Tools / Start Trace, open your file and then save it to the desired resolution. The script generated should tell you what settings you need. You might need to uncomment the setting of the ViewSize. This is what I had to do.
On Thu, Sep 10, 2015 at 6:41 PM, Ruggiero Guida <ruggiero.guida at gmail.com> wrote:
Thanks Dan.
The image saved is 648 x 639 (see attached). What I am not understanding is the relation between ViewSize, camera settings and actual image size in pixels.
I would like to use paraview to render some textures that I will be using in my code and I need the image ti fit perfectly the content.
On 10 September 2015 at 23:19, Dan Lipsa <dan.lipsa at kitware.com> wrote:
Ruggiero,The following script saves a 100x100 sphere.I created it using the trace option in ParaView.

On Thu, Sep 10, 2015 at 5:07 AM, Ruggiero Guida <ruggiero.guida at gmail.com> wrote:
I am trying to create a screenshot of a specific size from a [VTK file][1].This is the code I am using
    from paraview.simple import *    paraview.simple._DisableFirstRenderCameraReset()    rad_map = LegacyVTKReader(FileNames=['test.vtk'])        # get active view    renderView1 = GetActiveViewOrCreate('RenderView')    dpi = 70    heigth = 24.39846235421442    width = 24.398462354214413    width_p = int(width * dpi)      heigth_p = int(heigth * dpi)    renderView1.ViewSize = [width_p, heigth_p]        # reset view to fit data    #renderView1.ResetCamera()        # current camera placement for renderView1    renderView1.CameraParallelProjection = 1    renderView1.CameraPosition = [5, 5, 1000]    renderView1.CameraFocalPoint = [5, 5, 0.0]    renderView1.CameraViewUp = [0.0, 1.0, 0.0]    scale = (heigth) / 2.0    renderView1.CameraParallelScale = scale        Render()    SaveScreenshot("/Users/ruggiero/dev/test.png", magnification=1)
The problem is that the `ViewSize` seems to be ignored and I keep having images of fixed size 1707 × 855. The height 855 seems to be a kind of limit; the only way to get what I want is to limit the `ViewSize` to 855x855.
I have checked [this][2] question and [this][3] question, but with no success.
Any idea? I am not very confident in the settings for the camera. Could this be the issue? 

  [1]: https://dl.dropboxusercontent.com/u/1342856/test.vtk  [2]: http://stackoverflow.com/questions/31930448/in-python-script-for-paraview-can-i-specify-the-resolution-when-i-do-a-savescre  [3]: http://stackoverflow.com/questions/27430588/paraview-python-command-to-save-picture-of-defined-size

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