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Re: Color fill and line width?

Christian,

The problem with the 16 degree contour overlaying the other "every 4
degrees contour"  is your CINT setting:
CINT = 16;999

Since you only want to draw a single contour that matches your 4 degree
contours
but with the thicker line width, you can use:
CINT = 4/16/16
(the min and max of the same value above will limit to a single contour,
instead of
your above, which is actually 2 contour values).

Note that you can do all three of your plots simultaneously in GDPLOT2
which might
save you some time if you have a number of grids or times to read, eg:

CTYPE = f ! c ! c
LINE  =  !  1/2/4 ! 1/2/8
CINT =  ! 4 ! 4/16/16


Steve Chiswell
Unidata User Support


On Wed, 2006-08-23 at 12:17 +0200, Christian Pagé wrote:
> Hello all,
> 
> I am trying to generate some plots with contour colored fills.
> However, I need also to have some specific contours with a different
> thickness of the contour line. FINT and FLINE doesn't allow the line
> width to be specified for specific contours. 
> 
> The solution I found was to superimpose contours using a different line width 
> using CINT and LINE for the same field.
> However, the contours don't match exactly... 
> 
> Here are the relevant options given to gdcntr (where colors have been
> redefined with gpcolors) : 
> SCALE = 0
> HILO =
> HLSYM =
> LATLON = 0
> CONTUR = 3/1
> CTYPE = F
> FLINE = 4;5;6;7;8;9;10;11;12;13;14;15;16;17;18;19;20;21;22;23;24;25/1
> FINT = -32;-28;-24;-20;-16;-12;-8;-4;0;4;8;12;16;20;24;28;32;36;40;44 
> CLRBAR = 1//CL/.005;.5/.75;.01|1/2/111/221/l/hw
> run
> 
> CINT = 4
> LINE = 1 / 2 / 4
> run
> 
> CINT = 16;999
> LINE = 1 / 2 / 8
> run
> 
> exit
> 
> I thus get an image like this one:
> http://meteocentre.com/analyse/local/eur_850_tpw.gif
> 
> where we can see that the lines don't match exactly, due to some
> smoothing which is not the same.
> Using CONTUR = 0 did not solve the problem either, and the plots
> looked uglier... 
> 
> Any solution?
> 
> -- 
> Christian Pagé
> UQAM 
-- 
Steve Chiswell <address@hidden>
Unidata