Activity for Mark Lorenz

  • Mark Lorenz Mark Lorenz posted a comment on discussion Help

    Ok, thank you again!

  • Mark Lorenz Mark Lorenz modified a comment on discussion Help

    Hi, thanks. For all projects using 2 standard parallels, my code works greatly now! I have another question. I was checking EPGS 27564 (only one standard parallel) https://www.spatialreference.org/ref/epsg/27564/html/ There we have given a latitudeOfOrigin and a scaleFactor (and a centralMeridian == 0.0). So I require the first constructor, right? So I tried the same algorithm as you did in your PA example (pseudo code): var epsg = [ centralMeridian: 0.0, latitudeOfOrigin: 46.85, scaleFactor: 0.99994471,...

  • Mark Lorenz Mark Lorenz posted a comment on discussion Help

    Hi, thanks. For all projects using 2 standard parallels, my code works greatly now! I have another question. I was checking EPGS 27564 (only one standard parallel) https://www.spatialreference.org/ref/epsg/27564/html/ There we have given a latitudeOfOrigin and a scaleFactor (and a centralMeridian == 0.0). So I require the first constructor, right? So I tried the same algorithm as you did in your PA example (pseudo code): var epsg = [ centralMeridian: 0.0, latitudeOfOrigin: 46.85, scaleFactor: 0.99994471,...

  • Mark Lorenz Mark Lorenz posted a comment on discussion Help

    Understood. Thank you so much, sir!

  • Mark Lorenz Mark Lorenz modified a comment on discussion Help

    Wow, that was quick! Thanks a lot! I missed that example. So, the two key points are: You do the Forward() operation twice: One for the point transformation using the given X0/Y0 points and then the actual operation, correct? What's interesting about this, is that you use the lon0 twice in the parameters. Could you explain this point please? k1 equals 1. Is that always the case with these kinds of definitions?

  • Mark Lorenz Mark Lorenz posted a comment on discussion Help

    Ah, I missed that. So, the two key points are: You do the Forward() operation twice: One for the point transformation using the given X0/Y0 points and then the actual operation, correct? What's interesting about this, is that you use the lon0 twice in the parameters. Could you explain this point please? k1 equals 1. Is that always the case with these kinds of definitions?

  • Mark Lorenz Mark Lorenz modified a comment on discussion Help

    Hi Charles, first: Thank you so much for your library. I used it several times in my projects and even already ported some parts of it into Dart. Currently I want to create a WGS84 LatLon converter from/into Lambert-93 and several other specific Lambert projections. When I read some sources like the French Wikipedia on that (https://fr.wikipedia.org/wiki/Projection_conique_conforme_de_Lambert) I came to a problem with the definitions. In your code, one needs following parameters (next to rotation...

  • Mark Lorenz Mark Lorenz modified a comment on discussion Help

    Hi Charles, first: Thank you so much for your library. I used it several times in my projects and even already ported some parts of it into Dart. Currently I want to create a WGS84 LatLon converter from/into Lambert-93 and several other specific Lambert projections. When I read some sources like the French Wikipedia on that (https://fr.wikipedia.org/wiki/Projection_conique_conforme_de_Lambert) I came to a problem with the definitions. In your code, one needs following parameters (next to rotation...

  • Mark Lorenz Mark Lorenz modified a comment on discussion Help

    Hi Charles, first: Thank you so much for your library. I used it several times in my projects and even already ported some parts of it into Dart. Currently I want to create a WGS84 LatLon converter from/into Lambert-93 and several other specific Lambert projections. When I read some sources like the French Wikipedia on that (https://fr.wikipedia.org/wiki/Projection_conique_conforme_de_Lambert) I came to a problem with the definitions. In your code, one needs following parameters (next to rotation...

  • Mark Lorenz Mark Lorenz posted a comment on discussion Help

    Hi Charles, first: Thank you so much for your library. I used it several times in my projects and even already ported some parts of it into Dart. Currently I want to create a WGS84 LatLon converter from/into Lambert-93 and several other specific Lambert projections. When I read some source like the French Wikipedia on that (https://fr.wikipedia.org/wiki/Projection_conique_conforme_de_Lambert) I come to a problem with the definitions. In your code, one needs following parameters (next to rotation...

1