topic Re: ArcGIS Pro Spatial Reference in Developers Questions

ArcGIS Pro Spatial Reference

RogerLoweth — Wed, 10 Feb 2016 02:04:02 GMT

I can't figure out how to get the equivalent of this arcpy.mapping code into arcpy.mp

# Set the CRS values based on the current data frame CRS

# get the map document

mxd = arcpy.mapping.MapDocument("CURRENT")

# get the data frame

df = arcpy.mapping.ListDataFrames(mxd)[0]

sr = df.spatialReference

Can anyone help please?

Re: ArcGIS Pro Spatial Reference

DanPatterson_Retired — Wed, 10 Feb 2016 02:12:46 GMT

Roger... have you seen the migration documentation ? ... Migrating from arcpy.mapping to ArcGIS Pro—ArcPy | ArcGIS for Desktop

Re: ArcGIS Pro Spatial Reference

RogerLoweth — Wed, 10 Feb 2016 02:16:00 GMT

Dan - yes, I'm looking at it now. I can see how to do it by referencing a layer, but what if I don't have any layers when I invoke my tool?

Re: ArcGIS Pro Spatial Reference

RogerLoweth — Wed, 10 Feb 2016 02:17:35 GMT

I tried doing this, but it doesn't work:

# get the map document

p = arcpy.mp.ArcGISProject("CURRENT")

# get the data frame

m = p.listMaps("Map")[0]

sr = m.spatialReference

Re: ArcGIS Pro Spatial Reference

DanPatterson_Retired — Wed, 10 Feb 2016 02:35:55 GMT

from the help topic

get the current document

get the first dataframe called "yosemite national park"

get a list of the layers

do stuff with the layer IF it supports showlabels

p = arcpy.mp.ArcGISProject("CURRENT")

m = p.listMaps("Yosemite National Park")[0]

for lyr in m.listLayers():

if lyr.supports("SHOWLABELS"):

lblClasses = lyr.listLabelClasses()

yours

get the current project

get the first dataframe called Map

try to get its spatial reference which... it works... will just return a spatial reference object and not its name

so even if that works you might want m.spatialReference.name (check spelling is it S or small s in spatialReference)

So see

Introduction to arcpy.mp—ArcPy | ArcGIS for Desktop and

Map—ArcPy | ArcGIS for Desktop

but here is the only place you are going to get the SR

SpatialReference—ArcPy Classes | ArcGIS for Desktop since the map and map frame apparently don't have any concept of SR that I can find...however, I haven't fully explored all, and all hasn't been ported yet

Re: ArcGIS Pro Spatial Reference

RogerLoweth — Wed, 10 Feb 2016 02:49:47 GMT

Thanks Dan - that's what I thought; map and map frame don't seem to have any concept of spatial reference, even though from the help:

"A Map in ArcGIS Pro represents a collection of tabular and symbolized geographic layers and also persists information like coordinate system, default views of the data, and various other metadata."

So clearly the map works with the CRS - it just doesn't allow the poor old user access to it!

Maybe in the next version...

Cheers, Roger