topic Re: Export Web Map to image in ArcGIS API for Python Questions

Export Web Map to image

deleted-user-MOQmQl8Sb2hg — Sun, 12 Dec 2021 11:08:04 GMT

I am trying to export a web map constructed in python (1.5.0) as an image, however, when sending the web map to the export_map call, the JSON appears to be missing the MapOptions section of the JSON that is needed. Any thoughts on what I am missing?

search_result = gis.content.search(query="title:" + carrier + "_In-Force", item_type="Feature Layer")
print(search_result[0])

search_result_HU = gis.content.search(query="title:Michael_10_12", item_type="Feature Layer")
print(search_result_HU[0])

wm = WebMap()
wm.add_layer(search_result_HU[0], options={'title': 'Hurricane', 'opacity': 0.5})
wm.add_layer(search_result[0], options={'title': 'Locations'})
print(wm.definition)

output = mapping.export_map(web_map_as_json=wm, format='PNG32')
print(type(output))

When calling the export_map, I am getting the following error:

Error executing tool. Export Web Map Task : 'mapOptions'

Re: Export Web Map to image

deleted-user-MOQmQl8Sb2hg — Sun, 12 Dec 2021 11:08:07 GMT

Well I solved my own issue.

I manually added the MapOptions and exportOptions to the webMap JSON.

webmapJSON = web_map_item.get_data()

webmapJSON.update(json.loads('''{"mapOptions" : { "extent" : {  "xmin":-88.55,  "ymin":17.55,  "xmax":-72.75,  "ymax":38.05,  "spatialReference" : {   "wkid" : 4326  } }}}'''))
webmapJSON.update(json.loads('''{"exportOptions": { "dpi" : 300, "outputSize" :  [1000,1000]}}'''))

From here, you can call the export_map function and the image will be rendered.

Also, beware that your layers must be marked public for this to work.

Re: Export Web Map to image

simoxu — Mon, 22 Oct 2018 22:18:53 GMT

Thanks for sharing.