I need to create a map that displays the breeding and wintering ground of a bird species that has a circular arctic breeding distribution and winters in Africa. The map should lool pretty much like this:

enter image description here

However, the graticules are not correctly displayed. Depending on scale and frame one or two are missing.

I use the following projection: North_Pole_Azimuthal_Equidistant

Basic layers are graticules and land shapes from naturalearthdata.com. Is there maybe something wrong with the basic shapes and is there another free alternative?

I created grid-lines myself with Vector > Research tools > gridlines too and also tried the grid function from the MMQGIS package but but doesn´t help and gives the same problem.

  • Once you get beyond the equator all bets are off
    – Ian Turton
    Feb 13 '16 at 18:59
  • Ben, this might as well be pointing you in the wrong direction, but for what its worth: there is a great javascript library called D3 to work with projections and displaying data on it. (only if you do know some javascript) To give an idea: jasondavies.com/maps
    – tilt
    Feb 13 '16 at 19:19
  • 1
    Can you check your issue against this fix: hub.qgis.org/issues/7596
    – mdsumner
    Feb 13 '16 at 20:35
  • Thanks for the link. I am afraid my knowledge about QGIS is not deep enough to understand the solution of the bug.
    – Ben
    Feb 14 '16 at 15:02

The North Pole projection can not display the South Pole correctly, it would be in infinity.

It works for me this way:

  1. Load the 10 degree grid form Natural Earth
  2. Create a new polygon shapefile layer
  3. Draw a rectangle containing the latitudes from 90N to 60S
  4. Clip the grid to the rectangle
  5. Densify the geometry with 360 points
  6. Reproject the grid to a new file in EPSG:102016
  7. Load the 110m land shapefile from natural Earth
  8. Delete the Antarctic
  9. Reproject the land layer to EPSG:102016
  10. Remove all layers except the results of step 6 and 9
  11. Set Project CRS from Layer
  12. Switch On-the-fly reprojection OFF

and you will get this picture:

  • I clipped away the area north of the South pole and also tried to reproject manually but it still results in the same error. Do you have any further idea?
    – Ben
    Feb 14 '16 at 15:01
  • Did you densify the grid as well? There should be at leat 360 points on every latitude to get nice curved lines after reprojection.
    – AndreJ
    Feb 15 '16 at 6:49
  • Yes, I tried to densify the grid too but it didn´t help.
    – Ben
    Feb 15 '16 at 8:28
  • Thanks for your great effort and the detailed step-by-step explanation! It worked and made my day : )
    – Ben
    Feb 15 '16 at 17:46
  • What step did you miss before?
    – AndreJ
    Feb 15 '16 at 17:48

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