Python script trace can't repeat the GUI operation to draw time curve

henry_zhang · May 24, 2020, 8:09am

When I was drawing the time curve of Point Gaussian, the traced Python script was executed with error.
So the selection items in GUI can’t be traced in a Python script? What should I do to get the right points? Thanks for any help!

1.py (13.9 KB)
data.zip (4.8 KB)

mwestphal · May 25, 2020, 1:53am

Unable to reproduce your issue with ParaView 5.8.0 here.

henry_zhang · May 25, 2020, 2:14am

I’m sorry for not uploading the data file before. Now I re-edit the post. I modified the data path in “1.py” and attached “data.zip” file. Please uncompress the zip file to root D disk on Windows OS with path “D:\data\stress00**.vtk”. I think the macro 1.py can reproduce this issue.
Thank you very much!

mwestphal · May 25, 2020, 2:16am

Here is what I’m doint that do not reproduce your issue :

run ParaView
Wavelet, Apply
PointGaussian
Tools -> StartTrace, OK
Select Points Trough
Trace open with a selection line in it

henry_zhang · May 25, 2020, 2:25am

So do you mean ParaView can record the selection operation with step 6 or some other meaning?
I find that in “1.py” the python script have corresponding codes of selection operation. But when I run it again there is error as the video shows.

mwestphal · May 25, 2020, 2:30am

So that is the replaying of the trace that is not working ?
It seems to work here as well :

run ParaView
Wavelet, Apply
PointGaussian
Tools -> StartTrace, OK
Select Points Trough
Stop trace
Trace open with a selection line in it
Save trace as python file
delete selection
Add macro -> the python file
Click on the macro
Selection is correct

henry_zhang · May 25, 2020, 3:11am

Yes, I reproduce your operation and it’s correct. But my main purpose is selecting some points and draw the curve. So I have tried your suggestion and the error still occur as the video shows bellow. The error message is still the same: Name Error: name ‘plotSelectionOverTime1’ is not defined.
So can you find out why when I want to draw some curve with data things go wrong?
Thank you again!

mwestphal · May 25, 2020, 3:14am

Could you provide steps to reproduce your issue using the same format as mine (with your data is ok)? I’m still unclear about what is actually the problem here.

henry_zhang · May 25, 2020, 3:38am

Ok, the reproduce procedure of this situation is like this:

run ParaView
turn on “Apply changes to parameters automatically”
Tools -> StartTrace, OK
(1). Open D:\data\stress.vtk (group file)
(2). PointGuassian
(3). Properties -> Radius -> 20, Reset
(4). Select Points Trough (choose any points)
(5). Plot Selection Over Time
Stop trace
Save As Macro -> 1.py to default path
Reset Session (Now we try to run the script to reproduce this operation.)
click 1.py on toolbar
Output Message shows “NameError: name ‘plotSelectionOverTime1’ is not defined”

I attach the data file again for convenience.
data.zip (4.8 KB)

mwestphal · May 25, 2020, 4:09am

Wow, that’s indeed a bug ! I don’t have a way to work around it for now using trace, but you can simply fix your script after it has been generated by adding this line just before the first usage of plotSelectionOverTime1.

plotSelectionOverTime1 = PlotSelectionOverTime(Input=stress00)

The issue has been logged here :
https://gitlab.kitware.com/paraview/paraview/-/issues/19956

henry_zhang · May 25, 2020, 8:00am

Thank you for replying. I have tested your suggestion by adding a command to the original script 1.py.

plotSelectionOverTime1 = PlotSelectionOverTime(Input=stress00)

There is indeed no error message already. But as you promoted in GitLab issue channel this script still can’t reproduce the curve as GUI create.
So right now I can follow up this issue on GitLab if it is fixed in further ParaView released version?
Thank you!

mwestphal · May 25, 2020, 8:05am

Indeed, generating the script using the trace will not create a valid trace.

You can indeed follow it on gitlab, however, it may not be fixed in priority as there is a workaround.

If you are looking to fund this issue to fix it in priority, please contact us here : http://kitware.eu/contact/

henry_zhang · May 25, 2020, 8:49am

Ok, the workaround selection method you mean is GUI operation right now? or can I select points by number or coordinates in a script? Although I haven’t achieved and maybe try it later.
But thank you all the same!

mwestphal · May 25, 2020, 8:49am

What I mean is that you can just edit your python script after the trace to fix it.

henry_zhang · May 25, 2020, 8:53am

Oh, but as you mentioned the fixed script still can’t replot the curve. Right? It just creates an empty plotting area. So…

mwestphal · May 25, 2020, 8:54am

Looks like we misunderstood each other, the fixed script should work.

henry_zhang · May 25, 2020, 9:20am

Em…I think so. When you fixed the script can you plot the time curve? I post the modified script file 2.py.
When I run it there is still an empty plot.

2.py (14.0 KB)

GKk · January 26, 2022, 5:25pm

I found the solution! You have to use the query tool

catiocean · July 6, 2023, 2:38am

Hi Noctua,
I am having the same issue as the main post. It would be great if you could elaborate more about the query tool to solve the issue. Thanks!

catiocean · July 6, 2023, 2:48am

Hi Mathieu,

Sorry to dig this post years ago. I just met the similar issue as the main post and I am using Paraview 5.10 and the issue seems remain.
I uploaded the traced python script from the very beginning to load VTK files. I intended to select one point and plotsectionovertime. The the code started to give error from Line 105 “plotSelectionOverTime1Display = Show(plotSelectionOverTime1, quartileChartView1, ‘QuartileChartRepresentation’)” with the error message “NameError: name ‘plotSelectionOverTime1’ is not defined”.
I wonder to fix this issue, which command(s) I should add to the traced script?
Thank you very much!!!
salishsea_sal2_test.py (20.9 KB)