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How to add new group layer with ArcPy?
Save an empty group layer as a .lyr file. Then you can use AddLayer to add it to your map and then add new layers from there. For ArcGIS 10.2 and 10.3, you cannot add a Layer to that group. You should refer to the layer added in the TOC and not the one on the drive.
Can you add layer to TOC in ArcGIS 10.2?
For ArcGIS 10.2 and 10.3, you cannot add a Layer to that group. You should refer to the layer added in the TOC and not the one on the drive. Finish with the steps described in the following post : AddLayertoGroup
Why do I only have one group layer?
I only have one group layer for testing (the group layer has 5 layers in it) and there are 2 non-group layers. The output is just printing the name of the initial group layer rather than those layers within the group. I suspect it’s due to the changes in arcpy from arcMap to arcPro, specifically between ListLayers and listLayers
What is the LONGNAME of a layer in ArcGIS?
A layer’s longName value will include the group name in addition to the layer name. For example, a layer named Layer1 in a group layer named Group1 will have a longName value of Group1\\Layer1. If the name value is equal to longName value, then the layer is not a group layer or the layer is not inside a group layer.
How does the listlayers function in ArcGIS work?
The ListLayers function returns index values that are generated from top to bottom as they appear in the table of contents or the way they appear in a layer ( .lyr) file. The same applies if a group layer is within another group layer.
How to count group layers in ArcGIS Python?
Look here https://stackoverflow.com/questions/17133028/arcgis-python-index-of-layer-within-a-dataframe for the example. Also code as it is will work only on the first data frame. Even better solution than above is to simply loop through all group layers as such:
How are layer properties modified in ArcPy mapping API?
The arcpy.mapping API only provides access to a limited number of layer properties that can be directly modified but all properties found in the Layer Properties dialog box can be modified using the UpdateLayer function. The information is extracted from a source layer and applied to the layer in a map document that needs to be updated.
How do I update a layer in ArcGIS?
An easy way of doing this is to use ArcMap to modify the layer with the appropriate properties and then save the layer out to a layer (.lyr) file. The layer file can then be used as a source_layer to update all the properties for a given layer.
How to use updatelayer in a map document?
UpdateLayer 1 Summary. Provides the ability to update all layer properties or just the symbology for a layer in a map document ( .mxd) by extracting the information from a source layer. 2 Discussion. 3 Syntax. 4 Code Sample.
How does auto arrange work in ArcGIS Pro?
AUTO_ARRANGE — Automatically places the layer or layers based on its layer weight rules and geometry. BOTTOM — Places the layer or layers at the bottom of the TOC layer stack. TOP — Places the layer or layers at the top of the TOC layer stack.
How do you add a layer to a map?
A Layer object. The addDataFromPath method provides a way to add a layer to a map in a similar way to how the Add Data From Path button works in the application; it places each layer based on layer weight rules and geometry type. For more precise layer placement control, refer to the moveLayer method.
How to create a layer in ArcGIS editor?
In ArcGIS ModelBuilder editor box, I designed the below process: Create a variable, defining the data type to ‘layer’. In its properties set as “a list of values” and “Model parameter”. (Optional: Rename the object to “Layers to symbolize”, to an easier identification).
How to create a group layer for a folder?
If you want a single group layer for each folder you can recycle this code and modify the os.walk to check for folders with .shp’s and go from there. Although, I would recommend trying to contain all these shapefiles into a geodatabase with a proper naming structure and metadata to fit your needs.
How can I add a layer to an empty DATA frame?
For more precise layer placement options, refer to the InsertLayer function. AddLayer is the only function that can add a layer into an empty data frame. AddLayer does not allow you to add layers to a layer file or within a group layer. If interested in managing layer files, refer to the Layer and AddLayerToGroup functions.
How to Manage Layer files in ArcGIS help?
If interested in managing layer files, refer to the Layer and AddLayerToGroup functions. The layer that is added must reference an already existing layer (keep in mind that a layer can be a group layer as well).