topic Re: Geoprocessing Service shows always same output value in Python Questions

Geoprocessing Service shows always same output value

ionarawilson — Fri, 29 Jan 2016 16:40:54 GMT

Hi, I need to know the scale of an mxd in a web application. For that I am running a geoprocessing service. I need to know the scale when there is a definition query and the map zooms in to that feature. I can see in the message that the scale changes, but the output in the web application is always the same scale, although the input feature changes. What am I doing wrong? Thank you for any help.

import arcpy

import os

import uuid

# Input Layout template

Layout_Template = arcpy.GetParameterAsText(0)

if Layout_Template == '#' or not Layout_Template:

Layout_Template = "StewardshipTractBoundaryMap"

layouttemplatemxd = Layout_Template

templatePath = 'D:/ArcGISData/Geoprocessing_Examples/Advanced_HighQualityPrinting3'

Selecting_Features = arcpy.GetParameterAsText(1)

Input_Polygons = "Stewardship"

mxd0 = arcpy.mapping.MapDocument(r"D:\ArcGISData\Geoprocessing_Examples\Advanced_HighQualityPrinting3\\" + layouttemplatemxd + ".mxd")

df1 = arcpy.mapping.ListDataFrames(mxd0, "DataFrame1")[0]

mxd0.activeView = df1

lyr1 = arcpy.mapping.ListLayers(mxd0, Input_Polygons, df1)[0]

lyr1.definitionQuery = ""

lyr1.definitionQuery = '"PlanID" = \'%s\'' % Selecting_Features

df1.panToExtent(lyr1.getSelectedExtent())

lyr1.getExtent()

lyr1extent = lyr1.getExtent()

df1.extent = lyr1extent

Scale = str(df1.scale)

arcpy.RefreshTOC()

arcpy.RefreshActiveView()

mxd0.save()

arcpy.SetParameterAsText(2, Scale)

lyr1.definitionQuery = ""

arcpy.RefreshTOC()

arcpy.RefreshActiveView()

arcpy.AddMessage(Scale)

mxd0.save()

del mxd0, df1, lyr1

Re: Geoprocessing Service shows always same output value

JamesCrandall — Fri, 29 Jan 2016 16:43:10 GMT

Set the output parameter?

arcpy.SetParameterAsText(1, Scale)

Re: Geoprocessing Service shows always same output value

ionarawilson — Fri, 29 Jan 2016 16:58:36 GMT

But since I have :

Layout_Template = arcpy.GetParameterAsText(0)

Selecting_Features = arcpy.GetParameterAsText(1)

Shouldn't it be arcpy.SetParameterAsText(2, Scale) like it is now?

Re: Geoprocessing Service shows always same output value

JamesCrandall — Fri, 29 Jan 2016 18:13:55 GMT

I suppose if that is the second output parameter. I didn't notice the first output parameter in the code sample you posted.

Also: do you get any output result when you execute the task from the services url?

Re: Geoprocessing Service shows always same output value

ionarawilson — Fri, 29 Jan 2016 18:24:15 GMT

No, there is only one output parameter, but I thought the input and output parameters shared indexes, no? So, even thought it is the first output parameter, it should have an index of 2, not of 0, because there are two input parameters. This example shows that the output parameter is indexed as 1 because there is a input parameter first.

SetParameterAsText—ArcPy Functions | ArcGIS for Desktop

Re: Geoprocessing Service shows always same output value

JamesCrandall — Fri, 29 Jan 2016 18:31:16 GMT

Perhaps I'm misunderstanding it myself but I read it as this being the index of the output parameters only.

In any case, if there's only one output, set it to 1 like I showed! --- in looking at my own codebase, the only example I have is where I am setting a single output parameter not a list of them. This returns a JSON output string that is the result of some geoprocessing:

arcpy.SetParameterAsText(1, json.dumps(data))

Re: Geoprocessing Service shows always same output value

ionarawilson — Fri, 29 Jan 2016 18:46:08 GMT

How many inputs do you have on this example?

Re: Geoprocessing Service shows always same output value

JamesCrandall — Fri, 29 Jan 2016 19:08:17 GMT

1 LOL!

Re: Geoprocessing Service shows always same output value

ionarawilson — Fri, 29 Jan 2016 19:36:03 GMT

Then that explains why your gp works, if you have one input parameter its index should be 0 and if you also have an output parameter then the index should be 1, because they share index values. But I will try your approach, although I dont think it is going to fix the problem. Thank you

Re: Geoprocessing Service shows always same output value

JamesCrandall — Fri, 29 Jan 2016 19:41:50 GMT

Sorry I don't have an immediate answer. I'd love to hear what you find out though as I'm sure I will run into the requirement of multiple params for a geop service at some point.

Re: Geoprocessing Service shows always same output value

DanPatterson_Retired — Fri, 29 Jan 2016 22:11:49 GMT

I like sys.argv although others prefer getparameterastext

sys.argv[0] is always the script name

sys.argv[1] ... sys.argv are the number of parameters that you specify in sequential order, so if you have 2 input parameters and 1 output parameter, then they would be numbered, 1,2,3

I am sure get...astext works the same way, but it starts at 0 since it doesn't know the script name.

Re: Geoprocessing Service shows always same output value

KevinHibma — Mon, 01 Feb 2016 14:22:08 GMT

If the tool works as a regular tool before publishing, but not as a service, your parameter index are probably correct.

My guess is when publishing it hasn't updated, or incorrectly updated the paths to either the templates, or the selected features you're passing in isn't working correctly.

The first and easiest test is to consume the service back in ArcMap - ArcMap will always pass the features correctly. If you get the correct result there, but not the webapp, its something to do with how the service + web application is setup.

If that isn't the problem, I'd try changing your first bit of code

import os

layouttemplatemxd = arcpy.GetParameterAsText(0) if arcpy.GetParameterAsText(0) else "StewardshipTractBoundaryMap" #I think this should work

Layout_Template = arcpy.GetParameterAsText(0)

if Layout_Template == '#' or not Layout_Template:

Layout_Template = "StewardshipTractBoundaryMap"

layouttemplatemxd = Layout_Template

templatePath = 'D:/ArcGISData/Geoprocessing_Examples/Advanced_HighQualityPrinting3'

Selecting_Features = arcpy.GetParameterAsText(1)

Input_Polygons = "Stewardship"

mxd0 = arcpy.mapping.MapDocument(os.path.join(templatePath, layouttemplatemxd + '.mxd')

And if none of that does it, it might be how you're doing the select itself. It looks a little strange to me, setting the definition query then doing a select. Is that needed?

Re: Geoprocessing Service shows always same output value

ionarawilson — Mon, 01 Feb 2016 15:01:48 GMT

Thank you Kevin. The gp gives the correct result in ArcMap so I am guessing is something in the web app. However, when I debug the web app it shows the selected features varies as the input but the output is always the same. I need to investigate more why this is happening in the web app. I will post the code here later. Thanks again.