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Extent of map in ArcGIS PRO

DavidMatthews3

In the transition from arcpy.mapping to arcpy.mp there doesn't seem to be a way to get the extent (in order to calculate the center) of the current map.The camera extent only applies to layouts and MapFrames.

Does anyone know how to get around this?

Something like

aprx<SPAN class="operator token">=</SPAN>arcpy<SPAN class="punctuation token">.</SPAN>mp<SPAN class="punctuation token">.</SPAN>ArcGISProject<SPAN class="punctuation token">(</SPAN><SPAN class="string token">"CURRENT"</SPAN><SPAN class="punctuation token">)</SPAN>
mapView <SPAN class="operator token">=</SPAN> aprx<SPAN class="punctuation token">.</SPAN>listMaps<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN>
extent <SPAN class="operator token">=</SPAN> mapView<SPAN class="punctuation token">.</SPAN>extent<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Is this possible in pro?

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Accepted answers

DavidMatthews3

After seeing this duplicate question arcGIS Pro Extents in the Viewing Pane Joshua Bixby which i missed yesterday it seems you need to save the aprx first and use defaultCamera

aprx<SPAN class="operator token">=</SPAN>arcpy<SPAN class="punctuation token">.</SPAN>mp<SPAN class="punctuation token">.</SPAN>ArcGISProject<SPAN class="punctuation token">(</SPAN><SPAN class="string token">"CURRENT"</SPAN><SPAN class="punctuation token">)</SPAN>
mapView <SPAN class="operator token">=</SPAN> aprx<SPAN class="punctuation token">.</SPAN>listMaps<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN>
mapExtents<SPAN class="operator token">=</SPAN>mapView<SPAN class="punctuation token">.</SPAN>defaultCamera<SPAN class="punctuation token">.</SPAN>getExtent<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>
mapExtents<SPAN class="punctuation token">.</SPAN>lowerLeft<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Pan around and save the aprx then

mapExtents=mapView.defaultCamera.getExtent()
mapExtents.lowerLeft<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Gives you the current extents (in this case the lower left extents).

Seems like a bug /missing feature

All comments

DanPatterson_Retired

I haven't had the need to burrow into it yet, but http://pro.arcgis.com/en/pro-app/arcpy/mapping/map-class.htm

cites that it is the mapframe that you are after

Maps are accessed using the listMaps function from the ArcGISProject object and it returns a Python list of Map objects. It is important to uniquely name each map so a specific map can be easily referenced using its name property. A map can also be accessed from a MapFrame object using the map property. Note: arcpy.mp does not provide access to map views within the application; it only provides access to MapFrames.

The mapframe http://pro.arcgis.com/en/pro-app/arcpy/mapping/mapframe-class.htm

DavidMatthews3

Thanks Dan but it looks like this only works for map frames in layouts. I'm looking for the current extent of the map (what would be a dataframe in 10.3).

So in 10.3 you might do this

mxd <SPAN class="operator token">=</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>mapping<SPAN class="punctuation token">.</SPAN>MapDocument<SPAN class="punctuation token">(</SPAN><SPAN class="string token">"CURRENT"</SPAN><SPAN class="punctuation token">)</SPAN>
df<SPAN class="operator token">=</SPAN>arcpy<SPAN class="punctuation token">.</SPAN>mapping<SPAN class="punctuation token">.</SPAN>ListDataFrames<SPAN class="punctuation token">(</SPAN>mxd<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN>
extent <SPAN class="operator token">=</SPAN> df<SPAN class="punctuation token">.</SPAN>extent

<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

DanPatterson_Retired

Everything seems to be associated with the mapframe, even the camera's extent properties as you point out, there has to be a way to step back one step.

DavidMatthews3

After seeing this duplicate question arcGIS Pro Extents in the Viewing Pane Joshua Bixby which i missed yesterday it seems you need to save the aprx first and use defaultCamera

aprx<SPAN class="operator token">=</SPAN>arcpy<SPAN class="punctuation token">.</SPAN>mp<SPAN class="punctuation token">.</SPAN>ArcGISProject<SPAN class="punctuation token">(</SPAN><SPAN class="string token">"CURRENT"</SPAN><SPAN class="punctuation token">)</SPAN>
mapView <SPAN class="operator token">=</SPAN> aprx<SPAN class="punctuation token">.</SPAN>listMaps<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN>
mapExtents<SPAN class="operator token">=</SPAN>mapView<SPAN class="punctuation token">.</SPAN>defaultCamera<SPAN class="punctuation token">.</SPAN>getExtent<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>
mapExtents<SPAN class="punctuation token">.</SPAN>lowerLeft<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Pan around and save the aprx then

mapExtents=mapView.defaultCamera.getExtent()
mapExtents.lowerLeft<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Gives you the current extents (in this case the lower left extents).

Seems like a bug /missing feature

ToyotaT18

I was looking for similar, thought I'd post the answer here in case anyone else was looking.

You can use aprx.activeView.camera.getExtent()

SRK

@ToyotaT18This should be the accepted answer as this solution works without saving the project and always grabs the current view of the map currently looked at.

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