[gradsusr] Color bar

Tue Jun 19 09:31:34 EDT 2012

HI EMMA,

ga-> set gxout shaded 
ga-> set clevs 4 6 8 10 12 14 16 18 
Number of clevs = 8 
ga-> set ccols 9 14 11 13 10 12 2 6 4 
Number of ccols = 9 
SO FAR SO GOOD 
NOW YOU CAN DISPLAY THE SHADED MAP
ga-> d wspd 

THEN YOU CAN OVERLAY THE CONTOUR MAP
ga-> set gxout contour

IF YOU WANT TO USE COLORED LINES YOU SHOULD DO THE SAME "ccols" AS THE SHADED OTHERWISE YOU ARE USING ONLY ONE COLOR FOR ALL YOUR LEVELS
ga-> set ccolor 1 
ccolor = 1 

ga-> set clevs 4 6 8 10 12 14 16 18 
Number of clevs = 8 
ga-> d wspd 
Contouring at clevs = 4 6 8 10 12 14 16 18 

CHECK IF THIS FILE "cbarn.gs" IS UNDER ONE OF YOUR YOUR PATH OTHERWISE COPY IT IN THE SAME DIRECTORY WHERE YOU RUN GRADS
ga-> run cbarn.gs 0.8 0.0 
Error opening script file: cbarn.gs 
ga-> run cbarn.gs 

This work is for a masters thesis. 

Thanks, 

Emma. 

----- Original Message ----- 
From: RafaelCB <rafael.ciram at gmail.com> 
Date: Tuesday, June 19, 2012 1:54 pm 
Subject: Re: [gradsusr] Color bar 
To: GrADS Users Forum <gradsusr at gradsusr.org> 

> Hi Emma, 
> 
> Usually when we use the color bar to the command " set gxout shaded ", then "set gxout contour " to put values on the boundary . 
> 
> usually " ccols " is greater than the " clevs ", example: 
> set clevs 4 6 8 10 12 14 16 18 (8) 
> set ccols 9 14 11 13 10 12 2 6 4 (9) 
> to enter the " CBAR " is necessary to put the " RUN" 
> example: 'run cbarn.gs 0.8 0.0 ' 
> 
> 
> general example : 
> 'define temp=tsh-273.16' 
> 'set cint 1' 
> 'set gxout shaded' 
> 'set csmooth on' 
> 'set clevs -5 -3 -1 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36' 
> 'set ccols 0 9 14 49 48 47 46 45 44 43 42 41 40 20 21 22 23 24 25 26 27 28 29' 
> 'd temp' 
> 'set ccolor 1' 
> 'set gxout contour' 
> 'set clevs -5 -3 -1 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36' 
> 'd temp' 
> 'run /home/meteop/rafael/reanalysis/ cbarn_new.gs 0.8 0.0' 
> 
> Cheers! 
> 
> -- 
> Rafael Censi Borges 
> Meteorologia - Epagri/Ciram 
> +55 (48)3239-8064/8066 
> http://ciram.epagri.sc.gov.br 
> 
> 
> 
> 

> 2012/6/19 EMMA SCANLON < EMMA.SCANLON.2012 at nuim.ie > 

> I just have a question regarding a color bar showing contours for wind speed in GrADS. 
> I've been using the following commands 
> " ga-> set gxout contour 
> ga-> set clevs 4 6 8 10 12 14 16 18 
> Number of clevs = 8 
> ga-> set ccols 9 14 11 13 10 12 2 6 
> Number of ccols = 8 
> ga-> set cstyle 2 
> cstyle = 2 
> ga-> set cthick 4 
> cthick = 4 
> ga-> d wspd 
> Contouring at clevs = 4 6 8 10 12 14 16 18 
> ga-> d contours 
> Syntax Error: Invalid Operand" 
> 
> However, it's not displaying the color bar. Am I doing something wrong with the "cstyle" or "cthick" 
> 
> Any advice would be greatly appreciated. 
> 
> Emma. 
> 
> 
> ---------- Mensagem encaminhada ---------- 
> From: EMMA SCANLON < EMMA.SCANLON.2012 at nuim.ie > 
> To: esrl.psd.data at noaa.gov 
> Cc: 
> Date: Tue, 19 Jun 2012 11:04:23 +0100 
> Subject: Re: Opening netcdf 
> I just have a question regarding a color bar showing contours for wind speed in GrADS. 
> I've been using the following commands 
> " ga-> set gxout contour 
> ga-> set clevs 4 6 8 10 12 14 16 18 
> Number of clevs = 8 
> ga-> set ccols 9 14 11 13 10 12 2 6 
> Number of ccols = 8 
> ga-> set cstyle 2 
> cstyle = 2 
> ga-> set cthick 4 
> cthick = 4 
> ga-> d wspd 
> Contouring at clevs = 4 6 8 10 12 14 16 18 
> ga-> d contours 
> Syntax Error: Invalid Operand" 
> 
> However, it's not displaying the color bar. Am I doing something wrong with the "cstyle" or "cthick" 
> 
> Any advice would be greatly appreciated. 
> 
> Emma. 
> 
> 
> 
> 
> ----- Original Message ----- 
> From: esrl.psd.data at noaa.gov 
> Date: Wednesday, June 6, 2012 1:03 pm 
> Subject: Re: Opening netcdf 
> To: EMMA.SCANLON.2012 at nuim.ie 
> Cc: esrl.psd.data at noaa.gov 
> 
> > Emma Scanlon, 
> > 
> > The GrADS command you need to be using on these files is "sdfopen", 
> > not "open". 
> > 
> > Good luck with your research. 
> > 
> > On 06/06/2012 05:39 AM, EMMA SCANLON wrote: 
> > > Hello, 
> > > 
> > > I'm currently conducting a thesis showing the changes in SST 
> > along the 
> > > west coast of Ireland. As part of my research I am using SST data 
> > > gathered from the ICOADS. As part of this I am using ubuntu 
> > and GrADS to 
> > > interpret the data. 
> > > I'm having some issues opening the SST .nc files within this. 
> > > When in grads I am using the command "ga-> open sst.mean.nc " 
> > (bearing in 
> > > mind I am in the correct directory) 
> > > 
> > > The following message is showing : canning description file: 
> > sst.mean.nc > Open Error: Unknown keyword in description file 
> > > --> The invalid description file record is: 
> > > --> CDF 
> > > The data file was not opened. 
> > > I know this may be a little out of your way to assist me on 
> > this topic 
> > > but any information/help would be greatly appreciated. 
> > > 
> > > Kind regards, 
> > > 
> > > Emma Scanlon. 
> > 
> > -- 
> > Don Hooper, replying for esrl.psd.data at noaa.gov . 
> > Please don't over-ride the Reply-To: address; I 
> > read esrl.psd.data at noaa.gov , too. 
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