topic Re: Can you set the reference scale of a Map using arcpy.mp? in Python Questions

Can you set the reference scale of a Map using arcpy.mp?

Anonymous User — Thu, 28 Sep 2017 21:10:07 GMT

Hi all.

Using the arcpy.mp module to access and export maps from an ArcGIS Pro project.

I have been able to figure out how to manipulate layouts, mapframes and cameras etc to zoom and scale the display, but I can't figure out yet how to set or change the reference scale of a given map?

I can obviously do this manually within Pro itself, but I can't find a property on the Map object or anywhere that allows me to set this?

Can anyone point me in the right direction?

Cheers,

-Paul

Re: Can you set the reference scale of a Map using arcpy.mp?

DanPatterson_Retired — Thu, 28 Sep 2017 21:16:09 GMT

It isn't here is it which is the arcpy model for Pro. You think it would be in the mapping section but it is not.

So you are looking in all the right sections. Even if you can read a property doesn't mean you can set something else that might emulate what you are looking for. There are many read-only properties and fewer read/write ones.

Re: Can you set the reference scale of a Map using arcpy.mp?

Anonymous User — Thu, 28 Sep 2017 21:27:52 GMT

Yeah, I looked through there but couldn't find it anywhere, I was hoping I missed it.

Re: Can you set the reference scale of a Map using arcpy.mp?

DanPatterson_Retired — Thu, 28 Sep 2017 21:31:04 GMT

shall we hope that we are both blind in this regard

Re: Can you set the reference scale of a Map using arcpy.mp?

curtvprice — Thu, 28 Sep 2017 22:19:53 GMT

If it were there, I would expect it in the arcpy.mp.Map class:

Map—ArcPy | ArcGIS Desktop

It is clearly not there. I don't see it in the .NET SDK either.

ArcGIS Pro 2.0 API Reference Guide - Map Control UPDATE found it here in the SDK doc.

UPDATE It is there now with ArcGIS Pro 2.4 on the Map object properties.

Re: Can you set the reference scale of a Map using arcpy.mp?

Anonymous User — Fri, 29 Sep 2017 00:14:38 GMT

Thanks Curtis - I agree that the 'Map' class is where I would expect it to be and it is not.

Although I also thought possibly it would be on the 'MapFrame' class??

In the arcpy.mapping module, it is present on the 'DataFrame' class as a property that can be set. So I'm picking that it is something that has just not been exposed yet in the mp module. Hopefully they will add it at some point soon. In the scheme of things, should be relatively easy as we know that the property already exists (because we can manipulate it manually within Pro itself).

Re: Can you set the reference scale of a Map using arcpy.mp?

curtvprice — Fri, 29 Sep 2017 22:35:40 GMT

Be sure and log an idea or post a tech support incident on this. The squeaky wheel gets the grease; over the years I've seen a lot of good ideas from me and my colleagues show up in the software.

Re: Can you set the reference scale of a Map using arcpy.mp?

curtvprice — Fri, 29 Sep 2017 22:40:34 GMT

Hey! I found it here in the .NET API.

ArcGIS.Desktop.Mapping Namespace > Map Class : SetReferenceScale Method

https://pro.arcgis.com/en/pro-app/sdk/api-reference/#topic11892.html :

Re: Can you set the reference scale of a Map using arcpy.mp?

RobbieSymborski — Fri, 27 Dec 2019 16:14:13 GMT

in ArcMap 10.6.1

(using the new arcpy.mapping module NOT arcpy.mp)

arcpy.mapping.MapDocument("CURRENT").activeDataFrame.referenceScale‍‍

returns: u'1:{YourCurrentRefenceScale}'

as a bonus:

arcpy.mapping.MapDocument("CURRENT").activeDataFrame.referenceScale = "1:1000"‍‍

will set the Current Reference Scale to 1000 and Refresh the ActiveView.

and:

arcpy.mapping.MapDocument("CURRENT").activeDataFrame.referenceScale = "1:0"‍

will Clear the Current Reference Scale and Refresh the ActiveView.

Re: Can you set the reference scale of a Map using arcpy.mp?

curtvprice — Sun, 29 Dec 2019 01:20:05 GMT

Good news, sometime in the last few years it got added in as the referenceScale property on the Map object

Map—ArcPy | ArcGIS Desktop