topic Re: Check layer in specific area using python in Python Questions

Check layer in specific area using python

Yaron_YosefCohen — Fri, 10 Dec 2021 21:46:34 GMT

Hi ,

i try to check if layer "openSpace" are in area coordinate with this code:

import arcpy
from arcpy import env

area= '178000 672000 190000 655000' 
env.workspace = r"C:\Project"
for mxdname in arcpy.ListFiles("*.mxd"):
    print mxdname
    mxd = arcpy.mapping.MapDocument(r"C:\Project\\" + mxdname)
    df = arcpy.mapping.ListDataFrames(mxd, "Layers")[0] 
    df.extent = area
    desc = arcpy.Describe(r"C:\Project\layers\openSpace.shp")
    if (map_Y_Max > layer_Y_max) and (map_X_Max > layer_X_max) and (map_Y_Min < layer_Y_min) and (map_X_Min < layer_X_min):
        print "layer is inside map extent"
    else:
        print "layer is outside map extent"
    mxd.save()
del mxd

but i get an error:

>>> 
antiquities.mxd
Traceback (most recent call last):
  File "C:\Users\yaron.KAYAMOT\Desktop\check if every layer in df extent_geonet.py", line 15, in <module>
    if (map_Y_Max > layer_Y_max) and (map_X_Max > layer_X_max) and (map_Y_Min < layer_Y_min) and (map_X_Min < layer_X_min):
NameError: name 'map_Y_Max' is not defined
>>>

i don't understand what my mistake because the layer extent is:

thanks for any help.

Re: Check layer in specific area using python

DanPatterson_Retired — Sun, 08 Nov 2015 15:50:10 GMT

because you haven't defined the variables that represent the extent, check this help topic

ATTEMPT 3

http:// desktop.arcgis.com/en/desktop/latest/analyze/arcpy-mapping/dataframe-class.htm remove the space after //

http://desktop.arcgis.com/en/desktop/latest/analyze/arcpy-mapping/dataframe-class.htm

Timothy Hales seem to be having issues today with copy-paste urls don't know if it is an iThingy issue, but it worked fine yesterday

Re: Check layer in specific area using python

RebeccaStrauch__GISP — Sun, 08 Nov 2015 20:37:46 GMT

Dan, for sone reason your link is coming up in error. (jive us sue again?).

This may be the topic Dan is trying to show ArcGIS Help (10.2, 10.2.1, and 10.2.2) .?

Re: Check layer in specific area using python

DanPatterson_Retired — Sun, 08 Nov 2015 21:04:13 GMT

I fixed the link...don't know what was going on, it works on the iThingy, but i copied the link and split off the first bit for copy,paste-concatenate

Re: Check layer in specific area using python

RebeccaStrauch__GISP — Sun, 08 Nov 2015 21:16:16 GMT

I'm still having issues with both of you links ...on my iPad (even rebooted it). I'll cooy paste the data frame page from my Safari link for 10.3. If this doesn't work, may be a Timothy Hales item

DataFrame—Help | ArcGIS for Desktop

edit....mine is coming up in error on my iPad too. But I've noticed that all browser searches that past week or so are showing 10.2 and earlier links again, instead on 10.3, so may be related issue.

Re: Check layer in specific area using python

DanPatterson_Retired — Sun, 08 Nov 2015 22:07:09 GMT

I posted a 10.3 link and fixed my original post... Grief...in short the topic to check in the help files is listed in the URL so not all is lost

Re: Check layer in specific area using python

Yaron_YosefCohen — Mon, 09 Nov 2015 10:00:53 GMT

but i have those values in the extent of the layer

Re: Check layer in specific area using python

DanPatterson_Retired — Mon, 09 Nov 2015 10:55:24 GMT

see these variables map_Y_Max, layer_Y_max , etc etc

they aren't defined in the code anywhere. Python doesn't automagically assign numbers to variables, you have to assign them to those variables.

So you are either not showing all your code or you didn't assign numbers to those variables.

Re: Check layer in specific area using python

NeilAyres — Fri, 10 Dec 2021 21:46:37 GMT

YCC can define an extent like that.

But you have to get the numbers the right way round.

His extent is in the wrong order.

>>> import arcpy
>>> ext = arcpy.Extent(0, 0, 100, 100)
>>> ext.XMin
0.0

Re: Check layer in specific area using python

NeilAyres — Fri, 10 Dec 2021 21:46:39 GMT

I take it back....

arcpy.Extent does do some basic checking by default. Clever, clever esri....

>>> ext = arcpy.Extent(0, 100, 100, 0)
>>> ext.XMin, ext.YMin, ext.XMax, ext.YMax
(0.0, 0.0, 100.0, 100.0)
>>>

Re: Check layer in specific area using python

DanPatterson_Retired — Mon, 09 Nov 2015 13:49:29 GMT

clever as it may be...those weren't assigned to his variables and the proper useage would be to parse the arguments from the extent in the first place

Re: Check layer in specific area using python

NeilAyres — Mon, 09 Nov 2015 14:35:40 GMT

Sorry Dan,

just looked at the code...

Yes, where is all that Map_Y.... coming from!

Also I see his "extent" is a string, so that wouldn't work either.

Re: Check layer in specific area using python

TimothyHales — Thu, 12 Nov 2015 04:21:39 GMT

Branching the "paste link" issue to here - Pasted links are not opening correctly so not to hijack this discussion.