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Unable to apply projection to OpenStreetMapOverlay

#1

In my WPF app, when attempting to apply a projection to the OpenStreetMapOverlay I get the following error message:

ProjectionIssue
ProjectionIssue827×713 18 KB

I was able to replicate this in the DisplayOpenStreetMapOverlaySample of the HowDoI sample app with the following code.

osmMapsOverlay.ProjectionConverterFromServerProjection = new ProjectionConverter(
       Projection.GetGoogleMapProjString(),
       Projection.GetProjStringByEpsgSrid(3348));

osmMapsOverlay.ProjectionConverterFromServerProjection.Open();

Cheers,
John

#2

Hi John,

Did you try to install ThinkGeo.UnmanagedProj via nuget?

Thanks,
Leo

#3

Hi Leo,

I’ve tried this on the HowDoI example WPF app with version 12.3.10 of ThinkGeo.UnmanagedProj.
I also tried updating all the packages included in the example app to the latest beta versions but the issue was still present.

Thanks,
John

#4

Hi John,

We need to use UnmanagedProjectionConverter, and ThinkGeo.Dependency.Gdal is required also.

osmMapsOverlay.ProjectionConverterFromServerProjection = new UnmanagedProjectionConverter(
        Projection.GetGoogleMapProjString(),
        Projection.GetProjStringByEpsgSrid(3348));

Here’s a sample, feel free to download and play around with it.
WpfApp1.zip (10.5 KB)

Thanks,
Leo