<div dir="ltr"><div class="gmail_default" style="font-size:small">Hi Guido,</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">Thanks for providing your script and data offline.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">The first thing to note is that cnMissingValFillColor will not be effective in this case, because your data doesn't have any missing values.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">The reason why you are not getting any transparency with raster fill is due to a quirk with raster fill that I never knew about until Dave Brown helped me look over your script today.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">The simple fix is to replace this line:</div><div class="gmail_default" style="font-size:small"><p class="gmail-p1"><span class="gmail-s1"> cmap_r(0,3)=0.0</span></p></div><div class="gmail_default">
<p class="gmail-p1" style="font-size:small"><span class="gmail-s1">with this line, which is setting the first color to black, but then making it transparent:</span></p><p class="gmail-p1" style="font-size:small"><span class="gmail-s1"> cmap_r(0,:)=0.0</span></p>
<p class="gmail-p1" style="font-size:small">Also, you can remove or comment this line, as it has no effect:</p>
<p class="gmail-p1">ResC@cnMissingValFillColor=0</p><p class="gmail-p1">Dave said he would look into why this quirk is necessary for raster fill and maybe he'll post back here with an explanation.</p><p class="gmail-p1">Meanwhile, I'm going to update some of our examples to mention this so hopefully the next user won't run into this.</p><p class="gmail-p1">Your ICON example is very nice by the way! Would you be willing to let me include it on our ICON examples page? If so, I may clean it up a little to add some comments and to remove the "do" loop since this is only one file. I won't redistribute the data file. You can email me offline about this if desired.</p><p class="gmail-p1">--Mary</p><p class="gmail-p1"><br></p><p class="gmail-p1"><br></p><p class="gmail-p1" style="font-size:small"><br></p><p class="gmail-p1" style="font-size:small"><br></p>
<p class="gmail-p1" style="font-size:small"><br></p></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Oct 2, 2017 at 9:44 AM, Mary Haley <span dir="ltr"><<a href="mailto:haley@ucar.edu" target="_blank">haley@ucar.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-size:small">I admit, I don't know what "the larger value" means in this case. Dave would know, but I think he's out of the office for a few days. Did setting cnGridBoundFillColor fix anything?</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">If not, is it possible for you to provide the script/data? You can do this offline if necessary. I don't think we have any unstructured examples like this that have missing data.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">Thanks,</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">--Mary</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small"><br></div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Sep 29, 2017 at 9:47 AM, Karin Meier-Fleischer <span dir="ltr"><<a href="mailto:meier-fleischer@dkrz.de" target="_blank">meier-fleischer@dkrz.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
cnMissingValFillColor:<br>
<br>
...<br>
Also note that the
triangular mesh contouring algorithm does not distinguish between
missing value areas and areas outside the grid boundary. Therefore
if <a href="http://ncl.ucar.edu/Document/HLUs/Classes/ContourPlot.shtml" target="_blank"><strong>ContourPlot</strong></a>
is given non-rectangular data or <a href="http://ncl.ucar.edu/Document/Graphics/Resources/tr.shtml#trGridType" target="_blank"><em>trGridType</em></a>
is explicitly set to <code>TriangularMesh</code>,
the color index used will be the larger value of those assigned to
the resources <a href="http://ncl.ucar.edu/Document/Graphics/Resources/cn.shtml#cnMissingValFillColor" target="_blank"><em>cnMissingValFillColor</em></a>
and
<a href="http://ncl.ucar.edu/Document/Graphics/Resources/cn.shtml#cnGridBoundFillColor" target="_blank"><em>cnGridBoundFillColor</em></a>.
<br>
<br>
Maybe Mary, Dave or Rick can say somthing more about it.<br>
<br>
-Karin<br>
<br>
<div class="m_402152832625899825m_-8173734807525222472moz-cite-prefix">Am 29.09.17 um 17:23 schrieb Guido
Cioni:<br>
</div><div><div class="m_402152832625899825h5">
<blockquote type="cite">
Yep, and I still get the same behaviour :(
<div><br>
<div>I also thought that was the case but then I read
that "Transparent" is the default option for <span style="color:rgb(51,51,255)">cnMissingValFillColor</span>.</div>
<div><br>
</div>
<div>Maybe it has something to do with the unstructured
grid that I'm using? <br>
<div><br>
<div>
<blockquote type="cite">
<div>On 29. Sep 2017, at 17:14, Karin
Meier-Fleischer <<a href="mailto:meier-fleischer@dkrz.de" target="_blank">meier-fleischer@dkrz.de</a>>
wrote:</div>
<br class="m_402152832625899825m_-8173734807525222472Apple-interchange-newline">
<div>
<div text="#000000" bgcolor="#FFFFFF"> Hi
Guido, <span class="m_402152832625899825m_-8173734807525222472moz-smiley-s1"><span>:-)</span></span><br>
<br>
have you tried the cnMissingValFillColor resource to
set the color for missing value?<br>
<strong></strong><strong><br>
<font color="#3333ff"><tt> </tt></font></strong><font color="#3333ff"><tt>
ResC@cnFillPalette = cmap_r<br>
</tt><tt> ResC@cnMissingValFillColor = 0</tt></font><br>
<br>
Bye,<br>
Karin<br>
<strong><strong><br>
</strong></strong>
<div class="m_402152832625899825m_-8173734807525222472moz-cite-prefix">Am 29.09.17 um 16:55
schrieb Guido Cioni:<br>
</div>
<blockquote type="cite">
Hi,
<div>I'm trying to plot filled contour of
wind speed overlaid on a map. In order to mask
small values of winds I've both masked the
original data and set the first color of the
color palette as transparent, i.e. </div>
<div><br>
</div>
<div>
<div><font face="Menlo">cmap_r=read_colormap_file("win<wbr>d_17lev")</font></div>
<div><font face="Menlo">cmap_r(0,3)=0.0</font></div>
<div><font face="Menlo">ResC@cnFillPalette=
cmap_r</font></div>
</div>
<div><br>
</div>
<div>However, when drawing with
ResC@cnFillMode = "RasterFill", this causes the
Missing Values to be coloured with white instead
that being transparent, as you can see in the
attached picture. </div>
<div><br>
</div>
<br>
<fieldset class="m_402152832625899825m_-8173734807525222472mimeAttachmentHeader"></fieldset>
<br>
<div>Going back to old discussion this
seems to be an old problem that was fixed in
6.2.0. Am I wrong? </div>
<div><br>
</div>
<div>I'm attaching the script that I'm
using, although it is not 100% clean.</div>
<div>Cheers </div>
<br>
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<div>
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<fieldset class="m_402152832625899825m_-8173734807525222472mimeAttachmentHeader"></fieldset>
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