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Re: [ferret_users] Circle outline on polar stereographic plot?

Hi Paul,
That's good to know. It makes me think we could release a separate tar file with script upgrades, so that even if you don't (or can't!) upgrade the Ferret executable you could get corrections to scripts. New scripts can always be found in the Ferret environment tar file from the downloads page, so one could get them from there. Of course there might occasionally be script changes that work with the newest Ferret executable and not older ones, but it might be a useful thing to have available.


Paul Young wrote:
After editting my mp_graticule script (as per http://www.pmel.noaa.gov/maillists/tmap/ferret_users/fu_2004/msg00685.html), this works great - thanks!


On May 7, 2009, at 11:53 AM, Ansley Manke wrote:

Hi Paul,
mp_graticule should work.  The first 3 arguments control lines of longitude (vertical) and the next 3 control lines of latitude. Send it  " "   for the first 3 arguments.  That'll skip making any lines of longitude, and you can then just draw one line of latitude
use etopo20
set reg/y=-90:-60
set grid rose
go mp_stereographic_south
go mp_aspect
shade/noax/nokey rose,x_page, y_page

go mp_graticule " "  " "  " "  -60 -60 5 7

Or whatever your upper limit of Y is. The 5 is arbitrary, delta-y. You can also give it a " ".  And I've sent in pen 7 which is a dark line, which I think looks nice, but you could skip that for the default thin black line.


Paul Young wrote:
Hi all,

Just wondering if there is a simple way to add a circle around a polar stereographic plot - i.e. a graticule just at the low latitude limit. I've tried using mp_graticule.jnl with lon_min=0, lon_max=360, lon_delta=360 (etc), but I can't get it to work. I've attached a picture which illustrates what I'm trying to do.

As always, thanks for any help,



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