Filter sites with no coordinates

[geohacker]

Anthony suggest that we should use the API filters to remove sites without coordinates:

• You can filter out any sites without a latitude set API: Filtering · QutEcoacoustics/baw-server Wiki (github.com) Example search query: { "filter": { "custom_latitude": { "not_eq": null } } }
• I'd also advise uses the projection​ options to only return fields you need
• And lastly you can also use the partial text matching options to build typeaheads

@oliverroick I tried this with the filter_encoded query param but can't seem to get custom_latitude filter to work. Returns a 400 with "Filter parameters were not valid: Unrecognized combiner or field name: custom_latitude." Here's a curl:

curl https://api.bioacoustics.ds.io/api/v1/a2o/sites/\?direction\=asc\&items\=341\&order_by\=name\&filter_encoded\=eyJmaWx0ZXIiOnsiY3VzdG9tX2xhdGl0dWRlIjp7Im5vdF9lcSI6bnVsbH19fQo\=