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

Mon Sep 14 12:51:30 EDT 2015

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
>
> [image: Inline images 1]
>
> 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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>>>>>>
>>>>>
>>>>
>>>
>>
>
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