<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Please read the documentation at <a href="http://iges.org/grads/gadoc/gradcomdsdfwrite.html">http://iges.org/grads/gadoc/gradcomdsdfwrite.html</a>. <div><br></div><div>Here's the relevant section of that page:<div><p><em><strong>Appending Variables to a File</strong></em><br>
The sdfwrite command does not allow you to write out more than one
variable to a file. The way to do achieve this is to write out each
variable in a separate file, then merge them with the <a href="http://nco.sourceforge.net/nco.html" target="_blank">NetCDF Operators (NCO)</a>. Use the <a href="http://nco.sourceforge.net/nco.html#ncks" target="_blank"><code>ncks</code></a> command to append variables defined on the same grid. The GrADS commands might look like this:
</p><pre>open gfs.ctl
set x 1 720
set y 1 361
set t 1 last
define slp = mslp
define precip = ptot
set sdfwrite -flt slp.nc
sdfwrite slp
sdt sdfwrite -flt precip.nc
sdfwrite precip
</pre>
Then, outside GrADS, or using the ! in front of the command to send it
to the shell from within GrADS, merge these two files with <a href="http://nco.sourceforge.net/nco.html#ncks" target="_blank"><code>ncks</code></a>:
<pre><a href="http://nco.sourceforge.net/nco.html#ncks" target="_blank">ncks</a> -O -h -A precip.nc slp.nc</pre><p>The -A is for appending to the output file, the -O is for overwriting
existing output file, and the -h does not add anything to the output
file's global 'history' attribute. Please see the <a href="http://nco.sourceforge.net/nco.html" target="_blank">NCO User's Guide</a> for more information.</p><p><br></p><p> </p></div><div><br><div><div>On Sep 11, 2013, at 12:41 PM, M.Mahakur wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Respected Everyone,<br><br>Is it possible to write more than one variable to 'a single' netcdf file using sdfwrite? As below for example:<br><br><br>var1=...<br>var2='''<br>var3 ...<br>..<br><br>set sdfwrite all_var.nc<br>sdfwrite var1<br>sdfwrite var2<br>....<br>clear sdfwrite<br><br><br>With Regards and Thanks,<br>Mahakur<br>_______________________________________________<br>gradsusr mailing list<br><a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a><br>http://gradsusr.org/mailman/listinfo/gradsusr<br></div></blockquote></div><br><div apple-content-edited="true">
<span class="Apple-style-span" style="font-size: 12px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><span class="Apple-style-span" style="border-collapse: separate; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div>--</div><div>Jennifer M. Adams<br>Center for Ocean-Land-Atmosphere Studies (COLA)<br>111 Research Hall, Mail Stop 2B3<br>George Mason University<br>4400 University Drive<br>Fairfax, VA 22030 <br><br></div><div><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"></span></span></div></span><br class="Apple-interchange-newline">
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