[gradsusr] Help

[krishnamohan]

Hai Gibies,

As the documentation says

"Robinson projection, requires set lon -180 180, set lat -90 90"

so it wont work for your program
-- 
Krishnamohan.K.S
Junior Research Fellow
Department Of Atmospheric Sciences
Cochin University of Science and Technology
Cochin,India


On Tue, May 4, 2010 at 2:54 AM, gibies george <gibiesgeorge at gmail.com>wrote:

> Krish,
>
> When we are focusing on Pacific ocean, it is better to vary longitude from
> 0 to 360, so that we can get 180E at the central  portion of the plot. But,
> I think, it is not supported by Robinson projection. I once tried the
> following code
>
> 'open ../data/sst.ctl'
> 'set mproj robinson'
> 'set lat -90 90'
> 'set lon 0 360'
> 'set t 1'
> 'd sst'
>
> For this I recived an error message as follows.
>
> "Map Projection Error:  Invalid coords for Robinson
>   Will use linear lat-lon projection"
>
> I expect that this may be the problem facing by Anuradha.
>
>
> On 4 May 2010 14:32, krishnamohan <krishmet at gmail.com> wrote:
>
>> Hai Anuradha,
>>
>> I dont know whether spherical map projection is available but you can use
>> Robinson projection which is similar for this purpose. The easy method is to
>> use map.gs form grads script library
>>
>> http://grads.iges.org/grads/gadoc/library.html
>>
>> copy it to grads library or you data folder. then type "map". There you
>> have several options in which you select "robinson". Then plot the varible.
>> It will be like the attached figure. Also i am attaching a copy of the
>> map.gs file
>>
>> krishnamohan
>>
>> --
>> Krishnamohan.K.S
>> Junior Research Fellow
>> Department Of Atmospheric Sciences
>> Cochin University of Science and Technology
>> Cochin,India
>>
>>
>>  On Tue, May 4, 2010 at 11:53 AM, <anuradha.modi at iccsir.org> wrote:
>>
>>>  Dear Users,
>>> Can anybody suggest how to plot a global data in spherical map projection
>>> in grads
>>> I attached a example plot ( made in ferret),
>>> Same kind of figure can be plotted in grads?
>>>
>>> I found these options, but I did not find a right option for my
>>> requirement ( figure attached)
>>>
>>> set mproj *proj*
>>>
>>> Sets current map projection. Options for *proj* are:
>>>
>>>
>>>
>>>    latlon      Lat/lon projection with aspect ratio maintained (default)
>>>
>>>    scaled      Lat/lon aspect ratio is not maintained; plot fills entire
>>>    plotting area
>>>    nps         North polar stereographic
>>>    sps         South polar stereographic
>>>    lambert     Lambert conformal conic projection
>>>    mollweide   Mollweide projection
>>>    orthogr     Orthographic projection
>>>    robinson    Robinson projection, requires set lon -180 180, set lat
>>>    -90 90
>>>    off         No map is drawn; axis labels are not interpreted as
>>>    lat/lon
>>>
>>>
>>>
>>>
>>> Kindly Suggest.........
>>> Thanks in Advance
>>> Anuradha
>>>
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>>>
>>
>>
>>
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>>
>
>
> --
> Gibies George,CSIR-RF,
> Climate and Global Modelling Division,
> Indian Institute of Tropical Meteorology,
> Dr. Homi Bhabha Road,
> NCL (P. O.), Pashan,
> Pune 411008
>
> http://sites.google.com/site/gibiesge/
>
>
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