Get Extend of mapframe in Layout

Question

Hello,

I have look online for two days and cannot find the solution.

What I try to achieve is to get my mapframe extend in the layout and not the current map extend in the mapview.

The Dynamic text offer to have it but I do not know how to acces sit in arpcy

In the mapframe "extend" > "use a custome extend" > "current visible extend" it is displayed. Same here, I do not know how to access it.

The code below displays the map extend from the map view, not the actual extend in the layout.

import arcpy

def get_layout_bbox(layout_name):

aprx = arcpy.mp.ArcGISProject("CURRENT")
layouts = aprx.listLayouts(layout_name)

if not layouts:
raise ValueError(f"No layout found with the name {layout_name}")

layout = layouts[0]

layout_metadata = layout.metadata

# Get the layout's name or any other property as a title
layout_title = layout_metadata.title

# Reference to the last map frame in the layout
last_map_frame = layout.listElements("MAPFRAME_ELEMENT")[-1]

# Get the extent of the current map frame
extent = last_map_frame.camera.getExtent()

# Get the spatial reference of WGS 84
wgs84_sr = arcpy.SpatialReference(4326)

# Project the extent to WGS 84
projected_extent = extent.projectAs(wgs84_sr)

# Format the bounding box
bbox = (
f"{round(projected_extent.XMin, 6)}, "
f"{round(projected_extent.YMin, 6)}, "
f"{round(projected_extent.XMax, 6)}, "
f"{round(projected_extent.YMax, 6)}"
)

return layout_title, bbox

if __name__ == "__main__":
# Get the layout name from the tool's parameters
layout_name = arcpy.GetParameterAsText(0)

# Get the layout title and bounding box

arcpy.AddMessage(f"_"*25)
layout_title, bbox = get_layout_bbox(layout_name)
arcpy.AddMessage(f"Layout Title: {layout_title}")
arcpy.AddMessage(f"Bounding Box: {bbox}")
arcpy.AddMessage(f"_"*25)

Do you know how can I access the map extend in the layout ?

Thanks,

Alex

JB1234510 · Answer

Are you sure that the extent is wrong? I think it should be the correct extent? Maybe you could test it if you use  mapFrame.camera.setExtent(arcpy.Describe(lyr).extent) to zoom in the map Frame to another extent, the one of a layer file in your map Frame?

There's  also a solution here:

https://gis.stackexchange.com/questions/467522/adding-data-to-existing-aprx-layout-and-zooming-to-extent-of-new-data-using-arc

DanPatterson · Answer

I don't know how the extent could be accessed other than through the camera, however, there is more details information on the cim at....

Esri/cim-spec: This repository hosts the specification for the Cartographic Information Model (github.com)

Alex_gis · Answer

Here is the snipped code:

import arcpy

def get_layout_bbox(layout_name):
    aprx = arcpy.mp.ArcGISProject("CURRENT")
    layouts = aprx.listLayouts(layout_name)

if not layouts:
        raise ValueError(f"No layout found with the name {layout_name}")

# Select the layout
    layout = layouts[0]

# Access layout metadata
    layout_metadata = layout.metadata

# Get the layout's name or any other property as a title
    layout_title = layout_metadata.title

# Reference to the last map frame in the layout
    last_map_frame = layout.listElements("MAPFRAME_ELEMENT")[-1]

# Get the extent of the current map frame
    extent = last_map_frame.camera.getExtent()

# Get the spatial reference of WGS 84
    wgs84_sr = arcpy.SpatialReference(4326)

# Project the extent to WGS 84
    projected_extent = extent.projectAs(wgs84_sr)

# Format the bounding box
    bbox = (
        f"{round(projected_extent.XMin, 6)}, "
        f"{round(projected_extent.YMin, 6)}, "
        f"{round(projected_extent.XMax, 6)}, "
        f"{round(projected_extent.YMax, 6)}"
    )

return layout_title, bbox

if __name__ == "__main__":
    # Get the layout name from the tool's parameters
    layout_name = arcpy.GetParameterAsText(0)

# Get the layout title and bounding box
    arcpy.AddMessage(f"_"*25)
    layout_title, bbox = get_layout_bbox(layout_name)
    arcpy.AddMessage(f"Layout Title: {layout_title}")
    arcpy.AddMessage(f"Bounding Box: {bbox}")
    arcpy.AddMessage(f"_"*25)