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beunderf
Contributor

Change coordinate system to EPSG:28992

Hi,

With our customer, most data is in EPSG:28992. The user guide gives me the following information:

If you have lots of coordinates in another coordinate system than WGS-84 it might be efficient to run GeoAnalytics in another coordinate system. You then need to provide a background map in that coordinate system, either a tile service or a simple vector file.

Qlik GeoAnalytics - User Guide

Can someone give me a more hands-on explanation on how 'run GeoAnalytics' in another coordinate system?

Thanks,

Frank

1 Solution

Accepted Solutions
Employee
Employee

Re: Change coordinate system to EPSG:28992

Hi Frank,

This probably calls for a longer post, but here's the short version.

  • QGA default base map is in web mercator EPSG 3857
  • Default feature layers should be in WGS84 EPSG 4326
  • QGA can handle background and feature layers in other projections using base map "Empty" meter or degrees
  • If a custom projection, then all layers should follow the same projection.
  • No reprojection takes place on the client.

So for instance, using your CRS EPSG:28992, it's a meter based CRS:

  • Switch to base map Empty meters
  • Load a background WMS in CRS EPSG:28992
  • Load coordinates from an excel file with EPSG:28992
  • Connect to WFS, use EPSG:28992

Fyi, when importing data through the connector in other projections, the connector automatically converts to WGS 84, EPSG:4326.

Thanks,

Patric

1 Reply
Employee
Employee

Re: Change coordinate system to EPSG:28992

Hi Frank,

This probably calls for a longer post, but here's the short version.

  • QGA default base map is in web mercator EPSG 3857
  • Default feature layers should be in WGS84 EPSG 4326
  • QGA can handle background and feature layers in other projections using base map "Empty" meter or degrees
  • If a custom projection, then all layers should follow the same projection.
  • No reprojection takes place on the client.

So for instance, using your CRS EPSG:28992, it's a meter based CRS:

  • Switch to base map Empty meters
  • Load a background WMS in CRS EPSG:28992
  • Load coordinates from an excel file with EPSG:28992
  • Connect to WFS, use EPSG:28992

Fyi, when importing data through the connector in other projections, the connector automatically converts to WGS 84, EPSG:4326.

Thanks,

Patric

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