topic Re: Update an attribute from a report in ArcGIS CityEngine Questions

Update an attribute from a report

KristianMortensen1 — Mon, 11 Sep 2017 13:06:31 GMT

Hello

I have been wondering if there is a way to make python update an attribute from a report in CE. I have declared a start value to an attribute, which is used throughout the script, I then want to change this attribute to a number that is reported when the whole script has run, and instead of doing this for a 100 startshapes it would be easier to run a script.

Kind regards

Kristian

Re: Update an attribute from a report

LR — Mon, 11 Sep 2017 19:12:48 GMT

Export the report and read the values.

Re: Update an attribute from a report

KristianMortensen1 — Tue, 12 Sep 2017 17:01:49 GMT

So there is no way to do it without having to export the report out of CE?

Re: Update an attribute from a report

LR — Thu, 14 Sep 2017 21:29:16 GMT

AFAIK no, unless there was some change in the last version. It's annoying but since you're automating it anyway, it shouldn't be a big problem.

Re: Update an attribute from a report

CherylLau — Sun, 12 Dec 2021 03:29:16 GMT

You might be able to do this using an extra Python export script similar to what was suggested as Option 2 in this post (but adding an extra step to retrieve the reported value):

https://community.esri.com/thread/172315#comment-587903

1) Create an export python script. Right click on the scripts folder -> New -> Python Module -> Select Module:Export (Reporting) and choose a name (e.g. export_script.py).

2) In the finishModel() function, add code to retrieve the reported value, set the attribute value, and set the attribute source to USER.

    r = model.getReports()['myReport'][0]        # read value of report (need to report value in cga code)

    ce.setAttribute(shape, '/ce/rule/height', r)               # can set attr val like this

    ce.setAttributeSource(shape, '/ce/rule/height', 'USER')     # set source of attr val to user since we changed it and also so we can access it in the other python script that calls this one
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3) In your first python script, add code (lines 4-7 below) to call the export script.

    # get list of selected shapes
    shapeList = ce.getObjectsFrom(ce.selection, ce.isShape)

    # run export script to set attributes to reported values
    expSettings = ScriptExportModelSettings()
    expSettings.setScript("export_script.py")
    ce.export(shapeList, expSettings)
    
    for shape in shapeList:

        # print rule attribute
        print(ce.getAttributeSource(shape, '/ce/rule/height'))
        print(ce.getAttribute(shape, '/ce/rule/height'))
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