Reference local geojson file in custom visual

[Blaenzo]

Hi,

I have a custom visual that shows polygons in Google Maps taken from a geojson file using:

map.data.loadGeoJson()

 

as described here: https://developers.google.com/maps/documentation/javascript/importing_data

Using the google example referencing an external file works fine:

map.data.loadGeoJson('https://storage.googleapis.com/mapsdevsite/json/google.json');

 

However, referencing the exact same file locally does not work:

map.data.loadGeoJson('google.json');

Do I miss something here?

Thanks

[v-chuncz-msft]

@Blaenzo,

Take a look at the post below.

https://community.powerbi.com/t5/Developer/File-Upload-in-Custom-Visual/td-p/335971

[Blaenzo]

As a workaround I tried to reference the file from a CDN:

map.data.loadGeoJson('https://storage.googleapis.com/.../google.json');

but now it throws an error that the file request has been 'blocked by CORS policy'.

Access to XMLHttpRequest at 'https://storage.googleapis.com/.../google.json' from origin 'null' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

Do I need to configure the debug server in some way?

Thanks