[GRASS-user] polar stereographic projection: strange behaviour of r.contour and d.grid

[Maciej Sieczka]

Henning Lorenz wrote:

> I'm working on a map in polar stereographic projection and encountered two
> problems:

<snip>

Wolfgang,

What GRASS version and platform? Compiled yourself or prebuilt (the
source, if so)?

> Does anyone know about a way to construct the grid as a vector layer with
> "round parallels" - all my attempts ended up with edges at the crossing
> points with the meridians and straight lines inbetween.

Maybe create the grid with v.mkgrid in a latlong location and then
reproject it to your stereographic location?

Another wild guess:

Create the center meridian 0 line, create as many meridians as needed
rotating it with v.transform. Create a vector point on the pole, create
parallels with v.parallel or v.buffer.

Maciek