<div dir="ltr">Hey Ron,<div>From my experience, unless you have a relatively high resolution grid, your maskout method tends to produce a jagged edge. I think the "fancy dancy" method does a much better job, producing fairly smooth edges even on the coarser grids. I've attached a sample overlaying the four cloud cover layers in the GFS model output, using the first method that Jennifer mentioned ('set gxout shaded2'). I'm using version 2.0.1.oga.1. Of course, whatever works for you...</div>
<div>Stephen Mc</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Mar 3, 2014 at 12:20 PM, Goodson,Ron [Edm] <span dir="ltr"><<a href="mailto:Ron.Goodson@ec.gc.ca" target="_blank">Ron.Goodson@ec.gc.ca</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><u></u>
<div>
<div dir="ltr" align="left"><font color="#0000ff" face="Arial"><span>If not using the new fancy-dancy transparent colour
stuff ...</span></font></div>
<div dir="ltr" align="left"><font color="#0000ff" face="Arial"><span></span></font> </div>
<div dir="ltr" align="left"><font color="#0000ff" face="Arial"><span>I just use maskout for this .. eg ..
plotting precip that as a coloured shaded field I was plotting over another
shaded field such as outgoing longwave radiation (stand-in for clouds) using
only grayshades.</span></font></div>
<div dir="ltr" align="left"><font color="#0000ff" face="Arial"><span></span></font> </div>
<div dir="ltr" align="left"><font color="#0000ff" face="Arial"><span>In your case</span></font></div>
<div dir="ltr" align="left"><font color="#0000ff" face="Arial"><span></span></font> </div>
<div dir="ltr" align="left"><font color="#0000ff" face="Arial"><span>mymask = var -9</span></font></div>
<div dir="ltr" align="left"><font color="#0000ff" face="Arial"><span>d maskout(var,mymask)</span></font></div>
<div dir="ltr" align="left"><font color="#0000ff" face="Arial"><span></span></font> </div>
<div dir="ltr" align="left"><font color="#0000ff" face="Arial"><span>ron</span></font></div>
<div> </div><br>
<div dir="ltr" lang="en-us" align="left">
<hr>
<font face="Tahoma"><b>From:</b> <a href="mailto:gradsusr-bounces@gradsusr.org" target="_blank">gradsusr-bounces@gradsusr.org</a>
[mailto:<a href="mailto:gradsusr-bounces@gradsusr.org" target="_blank">gradsusr-bounces@gradsusr.org</a>] <b>On Behalf Of </b>Thomas
Robinson<br><b>Sent:</b> February 28, 2014 7:56 PM<br><b>To:</b> GrADS Users
Forum<div class=""><br><b>Subject:</b> Re: [gradsusr] Shaded plot only for values above a
minmum<br></div></font><br></div><div><div class="h5">
<div></div>
<div dir="ltr">Thank you Jeff. I actually have a plot of terrain, and I
would like to plot 'var' on top of that with the terrain in the background.
So I really want to make a shaded plot overlaid on a shaded plot.
Just using a background value won't work for that. It there any way
to just eliminate the lower values?
<div class="gmail_extra"><br><br>
<div class="gmail_quote">On Fri, Feb 28, 2014 at 1:13 PM, Jeff Duda <span dir="ltr"><<a href="mailto:jeffduda319@gmail.com" target="_blank">jeffduda319@gmail.com</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex" class="gmail_quote">
<div dir="ltr">use the ccols command to manually set the color levels. If
you have N contour values, you need N+1 colors, the first one in the list is
the color corresponding to values below the lowest contour. Set that to
0 (background), so that it will appear not to color values below your minimum
contour value. See the <a href="http://www.iges.org/grads/gadoc/colorcontrol.html" target="_blank">controlling colors</a> section of the documentation index
for more information.
<div><br>Jeff Duda</div></div>
<div class="gmail_extra"><br><br>
<div class="gmail_quote">
<div>
<div>On Fri, Feb 28, 2014 at 4:58 PM, Thomas Robinson <span dir="ltr"><<a href="mailto:ter@hawaii.edu" target="_blank">ter@hawaii.edu</a>></span> wrote:<br></div></div>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex" class="gmail_quote">
<div>
<div>
<div dir="ltr">Aloha Grads Users,
<div><br></div>
<div>I am trying to make a shaded plot where values only show up if they are
greater than 9. So I do:</div>
<div><br></div>
<div>set clevs 9 10 11 12 13 14 15</div>
<div>d val</div>
<div>cbarn</div>
<div><br></div>
<div>That works great, but it fills in purple (default) for everything below
9 which is most of the plot. Is there a way to turn off coloring in
the areas below 9? </div>
<div><br></div>
<div>Thanks, </div>
<div>Tom<span><font color="#888888"><br clear="all">
<div><br></div>-- <br>
<div dir="ltr">Tom Robinson<br>President - Graduate Student Organization
<br>Chair - Student Athletic Fee Committee <br>Graduate Student - Department
of
Meteorology<br><br></div></font></span></div></div><br></div></div>_______________________________________________<br>gradsusr
mailing list<br><a href="mailto:gradsusr@gradsusr.org" target="_blank">gradsusr@gradsusr.org</a><br><a href="http://gradsusr.org/mailman/listinfo/gradsusr" target="_blank">http://gradsusr.org/mailman/listinfo/gradsusr</a><br>
<br></blockquote></div><span><font color="#888888"><br><br clear="all">
<div><br></div>-- <br>Jeff Duda<br>Graduate research assistant<br>University
of Oklahoma School of Meteorology<br>Center for Analysis and Prediction of
Storms<br></font></span></div><br>_______________________________________________<br>gradsusr
mailing list<br><a href="mailto:gradsusr@gradsusr.org" target="_blank">gradsusr@gradsusr.org</a><br><a href="http://gradsusr.org/mailman/listinfo/gradsusr" target="_blank">http://gradsusr.org/mailman/listinfo/gradsusr</a><br>
<br></blockquote></div><br><br clear="all">
<div><br></div>-- <br>
<div dir="ltr">Tom Robinson<br>President - Graduate Student Organization <br>Chair
- Student Athletic Fee Committee <br>Graduate Student - Department of
Meteorology<br><br></div></div></div></div></div></div>
<br>_______________________________________________<br>
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<br></blockquote></div><br></div>
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