<div dir="ltr"><div>Oh okay. Now that I know what you're looking for...<br><br></div><div>You will have to incorporate <a href="http://www.iges.org/grads/gadoc/templates.html">templating over time</a> into the control files. Grads won't know how to display a time-height section properly without templating. For the specific data files you are using, use either the %f2 or %f3 template strings in your file name for the DSET entry in the control file. You appear to be using data from NCEP's NOMADS server, so the file names have the form<br><br><a href="http://nomads.ncep.noaa.gov/pub/data/nccf/com/gfs/prod/gfs.2014101700/gfs.t00z.master.grbf159.10m.uv.grib2">gfs.t00z.master.grbf159.10m.uv.grib2</a><br><br>so you can use the template strings as follows (just for example):<br><br>DSET gfs.t00z.master.grbf%f3.10m.uv.grib2<br><br>Don't forget to also adjust the TDEF entry of the control file to correspond to the number of data files you are using. Lastly, you'll have to rerun gribmap after editing the control file.<br><br>Once that's done you also won't need all that "set time 15Z17OCT2014" and "set dfile 2" junk either. Templating over time is a very powerful feature of Grads. I suggest getting acquainted with it.<br><br></div><div>Jeff<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Oct 19, 2014 at 1:58 PM, André Petersen <span dir="ltr"><<a href="mailto:mail@andrepetersen.de" target="_blank">mail@andrepetersen.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
Hi Jeff,<br>
<br>
thank you very much vor your answer! I removed the commands "set t 1
2". Now I get a plot with the wind speed on the x-axis and the
height on the y axis, see attachement.<br>
<br>
What I want is, that it looks like this:
<a href="http://www.atmos.albany.edu/facstaff/tang/forecast/fig/NAMM_WIND1.png" target="_blank">http://www.atmos.albany.edu/facstaff/tang/forecast/fig/NAMM_WIND1.png</a><br>
<br>
I really appreciate any further help! <br>
<br>
Best regards, André<div><div class="h5"><br>
<br>
<div>On 19.10.2014 11:55, Jeff Duda wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>
<div>
<div>Andre,<br>
</div>
It looks like you have the right idea, but I don't see a
reason for the commands<br>
<br>
</div>
'set t 1 2'<br>
<br>
</div>
That will cause grads to plot two different time steps worth of
data. Based on my knowledge of those GFS files, there is only
one time slice of data in each file, so depending on what the
TDEF line of your control file says, you should get an error on
the second time slice. Also, Grads does not overlay plots that
vary in time, only plots that are fixed in any two dimensions
(X-Y for instance).<br>
<br>
Basically, remove the "set t 1 2' commands and see if the result
is what you are looking for.<br>
<br>
Jeff Duda<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Sat, Oct 18, 2014 at 2:50 PM, André
Petersen <span dir="ltr"><<a href="mailto:mail@andrepetersen.de" target="_blank">mail@andrepetersen.de</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<p>Dear
subscriber, <br>
<br>
I downloaded data from the american gfs weather modell
(from <a href="ftp://ftp.ncep.noaa.gov/pub/data/nccf/com/gfs/prod/gfs.2014101812/master" rel="nofollow" style="margin:0px;padding:0px;border:0px;font-size:14px;vertical-align:baseline;color:rgb(74,107,130);text-decoration:none;background:transparent" target="_blank">ftp://ftp.ncep.noaa.gov/pub/data/nccf/com/gfs/prod/gfs.2014101812/master</a>,
edit date if you read more than 1 month later). <br>
</p>
<p>I
am using grads to plot data and it works fine if I plot
data from 1 timestep (=1 file) on a map. So my first try
was to open the first 2 files and to make a shaded plot
showing areas with the same wind speed in the same
color. What I get is an empty plot with correct axes.</p>
<pre style="margin:0px 0px 10px;padding:5px;border:0px;font-size:14px;vertical-align:baseline;font-family:Consolas,Menlo,Monaco,'Lucida Console','Liberation Mono','DejaVu Sans Mono','Bitstream Vera Sans Mono','Courier New',monospace,serif;overflow:auto;width:auto;max-height:600px;word-wrap:normal;color:rgb(0,0,0);font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:17.8048000335693px;text-align:left;text-indent:0px;text-transform:none;word-spacing:0px;background:rgb(238,238,238)"><code style="margin:0px;padding:0px;border:0px;font-size:14px;vertical-align:baseline;font-family:Consolas,Menlo,Monaco,'Lucida Console','Liberation Mono','DejaVu Sans Mono','Bitstream Vera Sans Mono','Courier New',monospace,serif;white-space:inherit;background:rgb(238,238,238)">'open gfs.t12z.mastergrb2f00.ctl'
'open gfs.t12z.mastergrb2f03.ctl'
'set dfile 1'
'set time 12Z17OCT2014'
'set gxout shaded'
'set lat 50'
'set lon 0'
'set lev 1000 200'
'set t 1 2'
'd sqrt(ugrdprs*ugrdprs+vgrdprs*vgrdprs)*1.9438'
'set dfile 2'
'set time 15Z17OCT2014'
'set t 1 2'
'd sqrt(ugrdprs*ugrdprs+vgrdprs*vgrdprs)*1.9438'
</code></pre>
<p>I
am using opengrads – Grid Analysis and Display System
(GrADS) Version 2.0.2.oga.2.</p>
<p>Anyone
who can help me plotting data from different timesteps
(= different files) into one plot?<br>
</p>
<p>Best
regards,<br>
André Petersen<br>
</p>
</div>
<br>
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<br>
</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
Jeff Duda<br>
Graduate research assistant<br>
University of Oklahoma School of Meteorology<br>
Center for Analysis and Prediction of Storms<br>
</div>
<br>
<fieldset></fieldset>
<br>
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</pre>
</blockquote>
<br>
</div></div></div>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Jeff Duda<br>Graduate research assistant<br>University of Oklahoma School of Meteorology<br>Center for Analysis and Prediction of Storms<br>
</div>