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Re: [ferret_users] ferret map projection help
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- Subject: Re: [ferret_users] ferret map projection help
- From: "Ansley C. Manke" <ansley.b.manke@xxxxxxxx>
- Date: Mon, 12 Jun 2017 11:26:55 -0700
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Hi,
Please see this FAQ:
http://ferret.pmel.noaa.gov/Ferret/faq/polar-stereographic-plots, and
and also run the demo script
yes? go mp_stereo_demo.jnl
You could make your own copy of this demo script, change the definitions
of variables xmin,xmax,ymin,ymax, xdel,ydel at the top of the script,
change the call from mp_stereographic_north to mp_stereographic_south.
Take out the commands that show things like marking some points on the
map and making extra labels, and take out the SHAKEY command, to leave
the color key in the standard location.
To make labels on a plot, you will do what is shown in mp_stereo_demo,
calling the "mp_label" command to put labels around the circle. (The
Ferret "go/help mp_label" shows what that script is doing.)
let mid_lon = 180
REPEAT/K=20:360:20 (GO mp_label `k` -48 0 `mid_lon - k` 0.12 "@CR`k`")
Or in PyFerret,
let mid_lon = 180
set text/font=serif ! or any font
REPEAT/K=20:360:20 (GO mp_label `k` -48 0 `mid_lon - k` 0.12 "`k`")
More suggestions:
* Add the /NOAXES qualifier on your FILL command.
* The mp_graticule command has arguments to control where the lines are
drawn, so perhaps say
go mp_graticule 0 360 20 -80 -50 10
* Look at the location of your main label. You probably will want to
put it above or below the plot. You could use the ANNOTATE command, for
instance,
annotate/norm/halign=0/xpos=0.5/ypos=-0.1 main label"
On 6/10/2017 2:01 AM, Stephy Ann Libera wrote:
Hello
I am trying to create a polar stereographic plot and I am unable to
mark the latitude and longitude as well as the labels.
from the errors I have understood the variables to be given for
labeling but I tried various values and haven't understood how to
define these.
attaching my jnl file, plot and a data
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