Krish,<br><br>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<br>
<br>'open ../data/sst.ctl'<br>'set mproj robinson'<br>'set lat -90 90'<br>'set lon 0 360'<br>'set t 1'<br>'d sst'<br><br>For this I recived an error message as follows.<br><br>
"Map Projection Error: Invalid coords for Robinson<br> Will use linear lat-lon projection"<br><br>I expect that this may be the problem facing by <font size="2">Anuradha.<br><br></font><br><div class="gmail_quote">
On 4 May 2010 14:32, krishnamohan <span dir="ltr"><<a href="mailto:krishmet@gmail.com">krishmet@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hai <font size="2">Anuradha,<br><br>I dont know whether </font><font size="2">spherical map projection is available but you can use Robinson projection which is similar for this purpose. The easy method is to use <a href="http://map.gs" target="_blank">map.gs</a> form grads script library<br>
<br><a href="http://grads.iges.org/grads/gadoc/library.html" target="_blank"> http://grads.iges.org/grads/gadoc/library.html</a><br><br>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 <a href="http://map.gs" target="_blank">map.gs</a> file<br>
<br>krishnamohan<br><br></font>-- <br>Krishnamohan.K.S<br>Junior Research Fellow<br>Department Of Atmospheric Sciences<br>Cochin University of Science and Technology<br>Cochin,India<br><font size="2"><br></font><br><div class="gmail_quote">
<div><div></div><div class="h5">
On Tue, May 4, 2010 at 11:53 AM, <span dir="ltr"><<a href="mailto:anuradha.modi@iccsir.org" target="_blank">anuradha.modi@iccsir.org</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div><div></div><div class="h5">
<div bgcolor="#ffffff"><font size="2">Dear Users,<br>Can anybody suggest how to plot a global data in spherical map projection in grads<br>I attached a example plot ( made in ferret),<br>Same kind of figure can be plotted in grads?<br>
<br>I found these options, but I did not find a right option for my requirement ( figure attached)<br></font><p>
<font size="2"><code>set mproj <i>proj</i></code></font></p><p><font size="2">
Sets current map projection. Options for <code><i>proj</i></code> are:
</font></p><p> </p><ul><font size="2"><code>latlon </code>
Lat/lon projection with aspect ratio maintained (default) <br><code>scaled </code>
Lat/lon aspect ratio is not maintained; plot fills entire plotting area<br><code>nps </code>
North polar stereographic <br><code>sps </code>
South polar stereographic <br><code>lambert </code>
Lambert conformal conic projection<br><code>mollweide </code>
Mollweide projection<br><code>orthogr </code>
Orthographic projection<br><code>robinson </code>
Robinson projection, requires <code>set lon -180 180, set lat -90 90</code><br><code>off </code>
No map is drawn; axis labels are not interpreted as lat/lon </font><br></ul>
<p> </p><p> </p><h3>Kindly Suggest.........</h3><font size="2"><br>Thanks in Advance<br>Anuradha</font><br><div><font face="Verdana" size="2"></font></div>
</div>
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