[gradsusr] Re : Greyscale Hardcopy Image Output

[Bamba Sylla]

Hi Mul

I guess you want to display the magnitude of the wind shaded in grey. Right?
I just see that Hersala replied to your question but may be you don't understand.
This is how to build your own greyscale colorbar 

****first you set the rgb color
set rgb 20 255 255 255 (this is white)
set rgb 21 200 200 200 (it's getting darker and darker from now on)
set rgb 22 170 170 170
.
.
.
.
set rgb 28 0 0 0 (this is black)

***set the values of the wind magnitude
set clevs 1 2 4 6 8 10 20 

***set the greyscale
set ccols 20 21 22 23 .....28 (this is the grey colors that you defined above using rgb)

*** display
d t


***you can start saving from here  using your usual stuff


Hope this will help
Best Regards !

 ***************************************************
Mouhamadou Bamba SYLLA
Post-Doc Position, PWC/ESP
International Centre for Theoretical Physics
Strada Costiera 11, 34100 Trieste, Italy
Office tel: 0039 040 2240 225
Cell: 0039 34 71 94 06 55
emails: msylla at ictp.it, syllabamba at yahoo.fr 
***************************************************




________________________________
De : mul yadi <mul98_psy at yahoo.com>
À : gradsusr at gradsusr.org
Envoyé le : Jeu 18 mars 2010, 11 h 43 min 37 s
Objet : [gradsusr] Greyscale Hardcopy Image Output


Dear All,

I ran this script:

---------------------------------------------------
'reinit'
'sdfopen uwnd.10m.gauss.2006.nc'
'sdfopen vwnd.10m.gauss.2006.nc'

'set lat -20 30'
'set lon 40 103'

'set gxout shaded'
'd mag(uwnd,vwnd.2)'

'enable print 10m_stream.gmf'
'print'
'disable print'

* External gxeps plotting
***'!gxeps -c -i 10m_stream.gmf -o sr_10m_stream.ps'
'!gxeps -i 10m_stream.gmf -o sr_10m_stream.ps'
---------------------------------------------------------------

Problem:
----------
The last line:
I would like to have grey scale output file (sr_10m_stream.ps)
because I did not use the option -c on the command gxeps.

But what  I got is colour output file (sr_10m_stream.ps).
What should I do, any one can help me ?

Note:
------
When I used GXPS instead of GXEPS, I could solve this problem,
but the File Size is being much bigger.


      
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