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add_layer 'NoneType' object is not iterable

glewi3

im trying to do tutorial at here:

https://developers.arcgis.com/python/sample-notebooks/land-cover-classification-using-unet/

when i get up to this line i get the error

m.add_layer(world_imagery_layer)

TypeError: 'NoneType' object is not iterable

however the other item can be added to my map (m) just fine

m.add_layer(label_layer)

ive tried:

https://community.esri.com/t5/arcgis-api-for-python-questions/nonetype-quot-error-when-adding-layer-to-webmap-using-python-api/m-p/764315

but apparently .Layer() isn't an attribute

AttributeError: 'GIS' object has no attribute 'Layer'

im not sure why one layer can be added but the other can't?

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Accepted answers

MehdiPira1

Hi @glewi3

What version of API are you using?

I'm getting the same error in 1.8.1 however I tested it in 1.8.3 and it's working.

I can recommend to upgrade your ArcGIS API for Python version to 1.8.3 and it should work.

All comments

glewi3

Hey sorry again

Do you know how to do this same thing with ArcGIS pro?

MehdiPira1

@glewi3

If you have ArcGIS Image Server installed, go to ArcGIS Server Manager > Site > Data Stores > Database

and create / register Raster Store. The path can be a shared folder.

glewi3

do u then know how to get an image server set up? i dont know why this isn't shown in the tutorial...

MehdiPira1

@glewi3

Glad to hear that.

Not a problem.

glewi3

thx

i created a whole new py36 environment in anaconda navigator and added Arcgis 1.8.3 to it then added it as a new kernal to jupyter and recopied every cell and now it all works. Thanks!

glewi3

world_imagery_item = gis.content.search("title: WorldImagery_AOI_NewYork",
"Map Image Layer")[0] # the index might change
world_imagery_item

world_imagery_layer = world_imagery_item.layers[0]

m = gis.map("Kent county, Delaware")
m

m.add_layer(world_imagery_layer)

glewi3

in anaconda navigator it says my arcgis library/package is 1.7.1 is that what u mean?

if i install arcgis 1.8.3 with anaconda then arcpy cant be installed because of conflicts. and i need arcpy in order to get some beginning bit to work. how i did it originally was i installed arcpy then arcgis (default version) came with it.

MehdiPira1

Hi @glewi3

What version of API are you using?

I'm getting the same error in 1.8.1 however I tested it in 1.8.3 and it's working.

I can recommend to upgrade your ArcGIS API for Python version to 1.8.3 and it should work.

RandyBurton

I assume somewhere in your code you are setting a value for world_imagery_layer. Something like:

world_imagery_item = ent_gis.content.search("title: WorldImagery_AOI_NewYork owner:api_data_owner", "Map Image Layer")[0]

world_imagery_layer = world_imagery_item.layers[0]

m.add_layer(world_imagery_layer)

The error suggests you might have a typo in the layer's name. The layer would not be found and a None would be returned. If you don't spot the error, you should share the bit of code where the world_imagery_layer is being set.

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