Modifying Layouts using Python Script

sahus

I am currently trying to edit a preset layout on ArcGIS Pro

The layout currently consists of a Legend, a Title and a Map. 

I would like to create a Python Script, to export this layout individually for each layer to PNG.

For each export, 

I would have already snapped a particular region of the map I require so no need for any changes. 

The Legend - it will reflect the new layer being selected

The Title - it will have the name of the new layer

Thank you!

JohannesLindner

I am not sure why I am unable to see such granularity in terms of properties under Legend

Hmm, no idea, but you can also do it with Python (see line 22).

 

I would also like to know how I can specify which layers I would like to export, instead of all the layers on the map.

listLayers() has an optional string argument which lets you search for layer name patterns. You could mabe rig something up with listLayers("*Stats"), but the far easier and more expandable way is to add a second step that only keeps the layers with the names you specify. See lines 32 and 39.

 

from pathlib import Path

def export_layout_for_each_layer(layer_list, layout, save_folder):
    save_folder = Path(save_folder)
    # turn all layers off
    for layer in layer_list:
        layer.visible = False
    # while there are still layers in the list
    while layer_list:
        # remove the first layer from the list and make it visible
        layer = layer_list.pop(0)
        layer.visible = True
        # special treatment for group layers
        if layer.isGroupLayer:
            # recursively call this function on its sub layers (this exports all the sub layers on their own
            export_layout_for_each_layer(layer.listLayers(), layout, save_folder)
            # make the sub layers visible (so we can export the group layer) and remove the sub layers from the master layer list (because we already exported them)
            for sub_layer in layer.listLayers():
                layer_list.remove(sub_layer)
                sub_layer.visible = True
        # make sure the legend only shows active layers
        layout.listElements("LEGEND_ELEMENT")[0].syncLayerVisibility = True
        # set title and export, then make layer invisible
        print(f"Exporting layout for {layer.name}")
        layout.listElements("TEXT_ELEMENT")[0].text = layer.name
        layout.exportToPDF(save_folder/f"{layer.name}.pdf")
        layer.visible = False


# define your save location and export layerrs
save_folder = Path(arcpy.env.workspace).parent
export_layer_names =  ["Money Stats" , "House Stats", "Car Stats", "Travel Stats"]

# get the elements you need
aprx = arcpy.mp.ArcGISProject("current")
layout = aprx.listLayouts("Layout")[0]
map_frame = layout.listElements('MAPFRAME_ELEMENT')[0]
all_layers = map_frame.map.listLayers()
export_layers = [layer for layer in all_layers if layer.name in export_layer_names]

# run it
export_layout_for_each_layer(export_layers, layout, save_folder)