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I've noticed that I can drag and drop data sets into a custom tool within ArcCatalog 10.1, but if I launch the tool in ArcMap and try to drag and drop layers already in my TOC, I get an error

one or more dropped items invalid

but I can browse to it and load that way.

PolyGeo
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gdub
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3 Answers3

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It sounds like your custom tool is expecting a dataset rather than a layer.

Consequently, when you drag and drop a dataset in ArcCatalog all is fine.

However, when you try to drag and drop a layer from the Table of Contents it rightly complains that it is not a dataset.

Try drag and drop of the dataset, which is the source of the same layer, from the Catalog window of ArcMap and I expect that will work.

To make your tool accept either a dataset or a layer take a look at the type of data element that parameter is based on in your model.

To more clearly appreciate the difference between a layer (listed in the Table of Contents of ArcMap) and a spatial dataset (listed in the Catalog window of ArcMap and in ArcCatalog) I recommend reviewing Difference between map layer and spatial dataset (e.g. feature class, shapefile)?

Community
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PolyGeo
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Also, this error can occur because of fact that your raster values are not interger data type. Convert it (ArcToolbox / Spatial Analyst Tools / Math / Int) and try again using this output. ;)

Adrian Croitor
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Adrian's answer worked for me.

Also, this error can occur because if your raster values are not integer data type. Convert it (ArcToolbox / Spatial Analyst Tools / Math / Int) and try again using this output.

lambertj
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Mike
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