<html>
<head>
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
Hi Sebastian and Adam,<br>
<br>
there is no built-in function but I wrote a script which creates the
plots for a spiral animation of multi-year monthly mean temperature
change data. Have a look at our DKRZ NCL examples page. At the
bottom of the table is a small plot of the last time step and the
script is also provided:<br>
<br>
<a class="moz-txt-link-freetext" href="https://www.dkrz.de/Nutzerportal-en/doku/vis/sw/ncl/ncl-examples">https://www.dkrz.de/Nutzerportal-en/doku/vis/sw/ncl/ncl-examples</a><br>
<br>
Bye,<br>
Karin<br>
<br>
<div class="moz-cite-prefix">Am 12.06.17 um 19:51 schrieb Adam
Phillips:<br>
</div>
<blockquote
cite="mid:CACvWuqAo+LMXM8Bzx69fWr8jQbwCk9Aw=Ei-djga6zjG-0HnOw@mail.gmail.com"
type="cite">
<div dir="ltr">Hi Sebastian,
<div>At present NCL does not have a function that can create
spiral graphics. I have created a ticket for this (NCL-2623)
that asks for this functionality to be added, and included
your feature requests. Unfortunately at best this will not be
added to NCL until later this summer. </div>
<div><br>
</div>
<div>Your idea to start with the radar_3 example coding to draw
the radial lines is a good one. Numerous calls to
gsn_add_polyline would then need to be added to draw the
spirals. Interpolation between the months for changing
colors/widths is possible but adds complexity. </div>
<div><br>
</div>
<div>If you develop your own NCL function (complete or
incomplete) please email it to me and I will add it to
NCL-2623 so that the NCL developer in charge of implementing
this new functionality could possibly use what you created.</div>
<div>Adam </div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Jun 12, 2017 at 6:44 AM,
Milinski, Sebastian <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:sebastian.milinski@mpimet.mpg.de"
target="_blank">sebastian.milinski@mpimet.mpg.de</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word">
Dear All,
<div><br>
</div>
<div>I would like to produce a plot in a similar style as
the well-known temperature or sea ice spiral plots
(e.g. <a moz-do-not-send="true"
href="http://www.climate-lab-book.ac.uk/spirals/"
target="_blank">http://www.climate-lab-<wbr>book.ac.uk/spirals/</a>).</div>
<div><br>
</div>
<div>The angle should represent the month (1-12) and the
distance from the centre some value.</div>
<div>The data points for consecutive months should be
connected by a line.</div>
<div><br>
</div>
<div>Has someone tried this in NCL already? What would the
best approach be?</div>
<div><br>
</div>
<div>I would also like to modify the line a bit:</div>
<div>- interpolate between data points rather than drawing
a straight line</div>
<div>- add a colour shading to the line (e.g. representing
the time axis 01/1850, 02/1850, 03/1850, …). The colour
should change gradually rather than jump to a new colour
at each data point.</div>
<div>- modify the width of the line. This should also be
interpolated between data points to achieve a nice
visual effect.</div>
<div><br>
</div>
<div>My best guess at the moment would be to use the
radar3.ncl example from this page: <a
moz-do-not-send="true"
href="https://www.ncl.ucar.edu/Applications/radar.shtml"
target="_blank">https://www.ncl.ucar.<wbr>edu/Applications/radar.shtml</a>.</div>
<div>I am confident that I could add data points and
connect them with lines, but I am not sure whether the
three modifications I am planning to do are possible
when building my script on this example.</div>
<div><br>
</div>
<div>I would be grateful if someone could point me in the
right direction.</div>
<div><br>
</div>
<div>
<div>Best regards,</div>
<div>Sebastian</div>
</div>
<div><br>
</div>
</div>
<br>
______________________________<wbr>_________________<br>
ncl-talk mailing list<br>
<a moz-do-not-send="true" href="mailto:ncl-talk@ucar.edu">ncl-talk@ucar.edu</a><br>
List instructions, subscriber options, unsubscribe:<br>
<a moz-do-not-send="true"
href="http://mailman.ucar.edu/mailman/listinfo/ncl-talk"
rel="noreferrer" target="_blank">http://mailman.ucar.edu/<wbr>mailman/listinfo/ncl-talk</a><br>
<br>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<div class="gmail_signature" data-smartmail="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div>
<div><span><font color="#888888">Adam
Phillips <br>
</font></span></div>
<span><font color="#888888">Associate
Scientist, </font></span><span><font
color="#888888">Climate and Global
Dynamics Laboratory, NCAR<br>
</font></span></div>
</div>
<div><span><font color="#888888"><a
moz-do-not-send="true"
href="http://www.cgd.ucar.edu/staff/asphilli/"
target="_blank">www.cgd.ucar.edu/staff/asphilli/</a>
</font></span><span><font color="#888888">303-497-1726
</font></span></div>
<span></span>
<div>
<div><span><font color="#888888"><br>
</font></span>
<div><span></span></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
ncl-talk mailing list
<a class="moz-txt-link-abbreviated" href="mailto:ncl-talk@ucar.edu">ncl-talk@ucar.edu</a>
List instructions, subscriber options, unsubscribe:
<a class="moz-txt-link-freetext" href="http://mailman.ucar.edu/mailman/listinfo/ncl-talk">http://mailman.ucar.edu/mailman/listinfo/ncl-talk</a>
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Dipl. Geophys. Karin Meier-Fleischer
Visualization, NCL, CDO
Application Support
Deutsches Klimarechenzentrum GmbH (DKRZ)
Bundesstrasse 45a - D20146 Hamburg - Germany
Phone: +49 (0)40 460094 126
Fax: +49 (0)40 460094 270
E-Mail: <a class="moz-txt-link-abbreviated" href="mailto:meier-fleischer@dkrz.de">meier-fleischer@dkrz.de</a>
URL: <a class="moz-txt-link-abbreviated" href="http://www.dkrz.de">www.dkrz.de</a>
Geschäftsführer: Prof. Dr. Thomas Ludwig
Sitz der Gesellschaft: Hamburg
Amtsgericht Hamburg HRB 39784
</pre>
</body>
</html>