Re: Changing the axis projection

In GMT 5 you specify your -R in projected (here, meter) coordinates and give the corresponding -Js scale, i.e, something like this

psbasemap -Re500000/2350000/500000/2000000 -Js0/-90/1:10000000 -Baf > map.ps

Your actual -Js parameters may depend on whether there was a standard parallel given, etc, and what your central longitude was.

-p

On Jan 28, 2014, at 3:17 AM, Janosch Hoffmann <[email protected]> wrote:

> Hi all,
> 
> Hopefully some one can help me. I currently have a map of a section of Antarctica. The data I am plotting is in the Antarctic stereographic projection. I am using the following command to create it:
> 
>   x_min=500000
>   x_max=2350000
>   y_min=500000
>   y_max=2000000
> 
>   project_size=1:10000000
>   scale=250000
> 
>  psbasemap -Jx$project_size -R$x_min/$x_max/$y_min/$y_max -B$scale -K > $plotfile
> 
> My problem is I want to plot this exact region and have the map look exactly the same except I want lat/lon instead of metres on the axis bars. Is there any way of doing this. Do I need to transform the coordinates to lat/lon for this to work?
> 
> Here is a link to an output ps file:
> 
> https://drive.google.com/file/d/0B9_1YzkpQ28JamJiVGpHRDJ0YUU/edit?usp=sharing
> 
> Cheers
> 
> Janosch Hoffmann
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