Error When Running Calculate Value

[ChrisHolmes]

Hello Everyone,

I have a model which runs the calculate value tool:

The code in the tool is:

When the model runs the following errors are displayed:

I'm not sure what the errors are related to. What's strange is that the code does seem to execute: it displays the extent of the site_polygon layer, sets the scale to 1:4000, then creates the JPG file.

Any insights appreciated. Thanks!

[ChrisHolmes]

Thanks Xander. So with those changes it does seem to change the extent of the dataframe:

Executing: ExportMXD2JPG32 LOC2016-003

Start Time: Thu Sep 01 15:53:39 2016

Running script ExportMXD2JPG32...

Using MXD H:\chris\LOC2016-003\LOC2016-003 - actual_use.mxd

DF extent on startup is: -9047.84819850156 5650698.4605047 -8349.34680149874 5651193.7614953 NaN NaN NaN NaN

DF scale on startup is: 4000.0

extent of lyr: -10106.7650000002 5656720.382 -10069.7270000003 5656763.791 NaN NaN NaN NaN

extent of new_extent: -10106.7650000002 5656720.382 -10069.7270000003 5656763.791 NaN NaN NaN NaN

DF extent after assignment is: -10437.4966985017 5656494.4360047 -9738.99530149886 5656989.7369953 NaN NaN NaN NaN

DF scale after assignment is: 4000.0

Exporting to JPEG: H:\chris\LOC2016-003\LOC2016-003 - actual_use.jpg

Error: PageLayoutObject: Error in executing ExportToJPEG

Completed script ExportMXD2JPG32...

Failed to execute (ExportMXD2JPG32).

Failed at Thu Sep 01 15:54:14 2016 (Elapsed Time: 35.46 seconds)

But this now seems to bring around a new error. Thanks again

[DanPatterson_Retired]

Chris...

 H:\chris\LOC2016-003\LOC2016-003 - actual_use.jpg

maybe try locations without '-' and spaces just for a check

H:\chris\x.jpg

might be a good suggestion

[XanderBakker]

Another thing you might want to try is to export to another format (like PDF or PNG) to see if this yields the same error.

[ChrisHolmes]

That's a good idea. Thanks Xander.

[ChrisHolmes]

Thanks Dan, I'll give that a try.

[ChrisHolmes]

Well, that worked! Nice clean results and the expected result on the map:

Executing: ExportMXD2JPG32 LOC2016-003

Start Time: Fri Sep 02 08:42:29 2016

Running script ExportMXD2JPG32...

Using MXD H:\chris\LOC2016-003\LOC2016-003 - actual_use.mxd

DF extent on startup is: -9047.84819850156 5650698.4605047 -8349.34680149874 5651193.7614953 NaN NaN NaN NaN

DF scale on startup is: 4000.0

extent of lyr: -10106.7650000002 5656720.382 -10069.7270000003 5656763.791 NaN NaN NaN NaN

extent of new_extent: -10106.7650000002 5656720.382 -10069.7270000003 5656763.791 NaN NaN NaN NaN

DF extent after assignment is: -10437.4966985017 5656494.4360047 -9738.99530149886 5656989.7369953 NaN NaN NaN NaN

DF scale after assignment is: 4000.0

Exporting to JPEG: H:\chris\test.jpg

Completed script ExportMXD2JPG32...

Succeeded at Fri Sep 02 08:43:07 2016 (Elapsed Time: 38.43 seconds)

I always have to remember the whole Modelbuilder doesn’t like spaces! It just needs to become a practice.

A big thanks to both Xander and Dan for all the help.

[ChrisHolmes]

Thanks Dan. Funny how it's easy to miss the tiny things. It didn't fix the errors though. I did find though that by commenting out mxd.save() it executes correctly. Not sure why it doesn't want to save to that location.

[ChrisHolmes]

I thought I would post the final script that created the expected results in the jpg file:

def main():
    import arcpy
    # will overwrite existing jpg
    arcpy.env.overwriteOutput = True

    # read the parameter from the tool
    loc_no = arcpy.GetParameterAsText(0)

    # define the path of the mxd
    mxd_file = r'H:\chris\{0}\{0} - actual_use.mxd'.format(loc_no)
    jpg_file = r'H:\chris\{0}\{0}-actual_use.jpg'.format(loc_no)
    if arcpy.Exists(mxd_file):
        arcpy.AddMessage("Using MXD {0}".format(mxd_file))
        try:
            mxd = arcpy.mapping.MapDocument(mxd_file)
            df = arcpy.mapping.ListDataFrames(mxd)[0]
            arcpy.AddMessage("DF extent on startup is: {0}".format(df.extent))
            arcpy.AddMessage("DF scale on startup is: {0}".format(df.scale))
            lyr = arcpy.mapping.ListLayers(mxd, 'site_polygon', df)[0]
            ext = lyr.getExtent()
            arcpy.AddMessage("extent of lyr: {0}".format(ext))
            new_extent = df.extent
            new_extent.XMin, new_extent.YMin = ext.XMin, ext.YMin
            new_extent.XMax, new_extent.YMax = ext.XMax, ext.YMax
            arcpy.AddMessage("extent of new_extent: {0}".format(new_extent))
            df.extent = new_extent
            df.scale = 4000
            arcpy.AddMessage("DF extent after assignment is: {0}".format(df.extent))
            arcpy.AddMessage("DF scale after assignment is: {0}".format(df.scale))
            arcpy.AddMessage("Exporting to JPEG: {0}".format(jpg_file))
            arcpy.mapping.ExportToJPEG(mxd, jpg_file)
            del mxd
        except Exception as e:
            arcpy.AddError("Error: {0}".format(e))
    else:
        arcpy.AddWarning("MXD {0} not found!".format(mxd_file))

if __name__ == '__main__':
    main()

Something interesting is that while the image exported is what I'm expecting:

Nothing ever changed in the map window from when the mxd opened. I always expected that the extent would change in the map window and then the image would be created based on that: