Re: Color fill and line width?

• To: Christian Pagé <page.christian@xxxxxxxxx>
• Subject: Re: Color fill and line width?
• From: Steve Chiswell <chiz@xxxxxxxxxxxxxxxx>
• Date: Wed, 23 Aug 2006 13:18:16 -0600

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 <chiz@xxxxxxxxxxxxxxxx>
Unidata

• References:
  • Color fill and line width?
    • From: Christian Pagé