[gradsusr] Setting color bar for animation

Wed Mar 23 11:42:58 EDT 2011

OK, from the command line I can use make_clevs to specify any range of  
levels and plot and get the color bar.  But both of my scripts dd.gs  
(a script to plot, specify a range, and make a color bar) and ani.gs  
(animation) do not plot the full color bar when I specify the range  
with script arguments.  I can't figure out what's going on...

Also, I am still looking for a way to display the current ccols and  
clevs.  Do you have to use 'q shades'?

One more thing, this animation script regulates its speed by redrawing  
the plot a certain number of times; is there a better way to do that?

Thanks,
Clay

****dd.gs***********
function dd (args)
*Plot a variable and its color scale.
* dd variable [ -cmin minimum value ]
*             [ -cmax maximum value ]
*             [ -cint color scale ]

variable=subwrd(args,1)

ccint=''
ccmin=''
ccmax=''
string=''
space=' '
n=2

while(n<9)
idx=subwrd(args,n)
opt=subwrd(args,n+1)
if(idx='');break;endif
if(idx='-cint');ccint=opt;endif
if(idx='-cmin');ccmin=opt;endif
if(idx='-cmax');ccmax=opt;endif
if(idx='-string');string=opt;endif
n=n+2
endwhile

'c'
'set gxout shaded'
if(ccint!=''); 'set cint 'ccint;endif
if(ccmin!=''); 'set cmin 'ccmin;endif
if(ccmax!=''); 'set cmax 'ccmax;endif
if(ccmin!=''); if(ccmax!=''); 'set rbrange 'ccmin ' 'ccmax; endif;endif

*CBB 3/22/11 set the levels
'make_clevs ' cmin cmax cint
'd 'variable

*Add date and user-input string
'q time'
say result
cctime=subwrd(result,3)
coln=substr(cctime,3,1)
if coln = ':'
dmy   =substr(cctime,7,9)
else
dmy   =substr(cctime,1,12)
day   =substr(cctime,1,3)
my   =substr(cctime,4,9)

*dmy   =substr(cctime,4,9)  *cbb changed
endif

* 'draw title 'dmy space string
  'draw title 'day space my space string

'q shades'

'cbar2'

****END***********

***ani.gs************

* Display animation
*     ga> run ani variable [ -I slowness (default=10) ]
*                            [ -cint, -ci  contour interval ]
*                            [ -cmin, -mn  minimum contour level ]
*                            [ -cmax, -mx  maximum contour level ]
*   ex. ga> run ani t-t.2 -ci 0.1 -mn -0.5 -I 5 -cmax 0.3
*          >>>> plot (t-t.2) with slowness=5, contour_interval=0.1
*               minimum contour level=-0.5, maximum contour level=0.3
*
*                                                  Nov. 9, 1999 Masami  
Nonaka
*
function ani (args)

variable=subwrd(args,1)

slow=''
ccint=''
ccmin=''
ccmax=''
cbar=''
n=2

while(n<10000)
idx=subwrd(args,n)
opt=subwrd(args,n+1)
if(idx='');break;endif
if(idx='-I');slow=opt;endif
if(idx='-Int');slow=opt;endif
if(idx='-cint');ccint=opt;endif
if(idx='-cmin');ccmin=opt;endif
if(idx='-cmax');ccmax=opt;endif
if(idx='-ci');ccint=opt;endif
if(idx='-mn');ccmin=opt;endif
if(idx='-mx');ccmax=opt;endif
n=n+2
endwhile

defaultslow=10
if(slow=''); slow=defaultslow;endif

'q dims'
  say result
aline=sublin(result,5)
cctime1=subwrd(aline,11)
cctime2=subwrd(aline,13)
tmin=substr(cctime1,1,9)
tmax=substr(cctime2,1,9)
it=tmin
'set dbuff on'
while (it <=tmax)
  'set t 'it
i=0
while (i <slow)
if(ccint!=''); 'set cint 'ccint;endif
if(ccmin!=''); 'set cmin 'ccmin;endif
if(ccmax!=''); 'set cmax 'ccmax;endif
if(ccmin!=''); if(ccmax!=''); 'set rbrange 'ccmin ' 'ccmax; endif;endif

*CBB 3/22/11 setting max min clevs
'make_clevs ' cmin cmax cint

  'display 'variable

  'run date.gs'

  'query shades'
shdinfo = result
if(subwrd(shdinfo,1)!='None');'run fcbar.gs';endif

'swap'
i=i+1
endwhile
  it=it+1
endwhile
  'set t ' tmin ' ' tmax

****END***********

On Mar 22, 2011, at 5:23 PM, Goodson,Ron [Edm] wrote:

> I see in my original note I mislead you .. when I said I do my  
> make_clevs.gs before cbar.  As was noted by Jeffrey . the settings  
> of clevs, ccols (all that stuff) must happen before the display of  
> the variable.  So swap those two lines of "display" and "make_clevs".
>
>
>
> The other thing I usually do right at the start of my programs (and  
> only has to be done once .. unlike settings clevs, ccols which must  
> be done before each display)  is to setup some custom colours  
> through "set rgb" (one entrie per colour) and rbcols (to set the  
> order of the colours).   You don't need to do this if you are using  
> the GrADS standard scheme of 16 colours.
>
>
> ron
>
> From: gradsusr-bounces at gradsusr.org [mailto:gradsusr-bounces at gradsusr.org 
> ] On Behalf Of Clay Blankenship
> Sent: March 22, 2011 4:05 PM
> To: GrADS Users Forum
> Subject: Re: [gradsusr] Setting color bar for animation
>
> OK, that make_clevs works for me when I do a simple 'd' on my  
> variable, but when I try to use a little fancier script (not even an  
> animation, just trying to pass the range on the command line), I  
> lose the min and max values.
>
> If I do:
>
> c
> make_clevs 0 2 0.2
> d soilwat5
> cbar
>
> I get a colorbar from 0 to 2 in steps of .2, even though the  
> variable range is 0 to 1 (so far, so good).
>
> If I do:
>
> dd soilwat5 -cmin 0 -cmax 2 -cint 0.2
>
> I get a colorbar from 0 to 1 in steps of 0.2.  The colors are the  
> same for the different ranges, it just doesn't show the ones above  
> 1.  Is this because clevs are set and ccols are not?  I was hoping  
> ccols would get set automatically like it does when you don't  
> specify levels.
>
> This happens whether or not I use the make_clevs line in the  
> following script.
>
> BTW, this seems really basic, but I can't figure out how to see the  
> current values of ccols and clevs.
> cbar is getting its ccols and clevs from 'q shades', but it doesn't   
> react to ccols and clevs until a plot has been made.
>
> Script follows.
>
> Thanks for the help,
> Clay
>
>

-- 
Clay Blankenship                 * USRA Research Scientist
clay.b.blankenship at nasa.gov      * 256-961-7638
320 Sparkman Drive               * Huntsville, AL 35805 USA
National Space Science and Technology Center at NASA-MSFC/UAH

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20110323/6f2cc42a/attachment-0001.html 