Menu

#135 Ability to rotate a GeoRef layer

v1.11
closed
nobody
5
2026-01-11
2015-08-09
No

I am trying to fit a raster image of a map to my track data using a GeoRef layer. I can zoom in the X and Y directions, but not rotate the map. Rotation is part of the world file specification, but "Viking ignores the rotation values", per the FAQ.

Unfortunately, this limits the utility of the GeoRef layer, because I can only use images that are already perfectly rotated.

Discussion

  • Rick Bragg

    Rick Bragg - 2016-01-26

    This would be great. I would like the maps to also "auto-rotate" to the direction that your moving (when using gps tracking) so that when tracking, the map always rotates and points in the direction that you are actually moving. would this be possible?

     
  • Rob Norris

    Rob Norris - 2022-06-02
    • status: open --> pending
    • Group: Future Release --> v1.11
     
  • Rob Norris

    Rob Norris - 2022-06-02

    GeoRef layer rotation support has now been added to the latest source code.

    NB1 Note that this rotation support is specific for GeoRef layers, rather than a general display rotation as mentioned by @Rick Bragg above.
    NB2 I'm not a great fan of map rotation for direction of travel, although it is possible for the future. The main downside of map rotation is that Viking currently only uses raster maps, which normally have the text labels of places horizontally aligned, thus when rotated it makes the text much harder to read.

     
  • Rob Norris

    Rob Norris - 2026-01-11
    • status: pending --> closed
     
  • Rob Norris

    Rob Norris - 2026-01-11

    GeoRef layer rotation support has now been added to the latest source code.

    NB1 Note that this rotation support is specific for GeoRef layers, rather than a general display rotation as mentioned by @Rick Bragg above.
    NB2 I'm not a great fan of map rotation for direction of travel, although it is possible for the future. The main downside of map rotation is that Viking currently only uses raster maps, which normally have the text labels of places horizontally aligned, thus when rotated it makes the text much harder to read.

     

Log in to post a comment.

MongoDB Logo MongoDB