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Hi Lyndon,<br>
<br>
the problem is that your shapefile data does not contain point data
which is needed by gsn_add_shapefile_polymarkers function <br>
<br>
<font color="#3333ff"><a class="moz-txt-link-freetext" href="http://ncl.ucar.edu/Document/Graphics/Interfaces/gsn_add_shapefile_polymarkers.shtml">http://ncl.ucar.edu/Document/Graphics/Interfaces/gsn_add_shapefile_polymarkers.shtml</a></font><br>
<br>
To see what is in your shapefile you can draw the shapefile data
using the x- and y-values. I've attached your modified script and
the PNG plot.<br>
<p class="indent">Hope this helps,<br>
Karin<br>
</p>
<br>
<br>
<div class="moz-cite-prefix">Am 03.07.17 um 04:37 schrieb Lyndon
Mark Olaguera:<br>
</div>
<blockquote
cite="mid:CA+V+8dV-qCwaCw4F1rjEtVL5Q8azq9Rzg9Qa0M9fLQ_6LnDRnA@mail.gmail.com"
type="cite">
<div dir="ltr">Dear NCL experts,
<div><br>
</div>
<div>I am trying to add point shapefile to a plot using the
gsn_add_shapefile_polymarkers function in NCL.</div>
<div><br>
</div>
<div>To view the contents of the shapefile I used the
shape_utils.ncl from the following link:</div>
<div>
<div>
<div class="gmail-m_-5902586075954390952gmail_signature">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr"><br>
</div>
<div dir="ltr"><font face="comic sans ms,
sans-serif"><b><u><a moz-do-not-send="true"
href="https://www.ncl.ucar.edu/Applications/shapefiles.shtml">https://www.ncl.ucar.edu/Applications/shapefiles.shtml</a><br>
</u></b></font></div>
<div dir="ltr"><br>
</div>
<div>I tried to plot the shapefile in GIS and it
works fine but I still got an error that the
geometry attribute should be a point when I
plot it in NCL. I am not sure why in the
filedump below, the geometry type is
"unknown".</div>
<div><br>
</div>
<div><br>
</div>
<div>I attached my script and the files that I
am plotting.</div>
<div><br>
</div>
<div><br>
</div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">Variable: a</font>
<div dir="ltr"><font face="comic sans ms,
sans-serif">Type: file</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">File path:<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>may_hgt-hgt_1996-2012_850hPa.nc</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">Number of global attributes:<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
0</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">Number of dimensions:<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
2</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">Number of variables:<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
6</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>======================================================================</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>Filename:
"sig_regpval_1996-2012.shp"</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
Geometry type: unknown</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
# of features: 2906</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
Min/max lat: -80.00/ 82.50</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
Min/max lon: 0.00/ 360.00</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
Variable names and their types:</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
geometry : integer</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
segments : integer</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
x : double</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
y : double</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
z : double</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
CREATED_BY : string</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
AUTHOR : string</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
TYPE : string</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
DESC : string</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
LONGITUDE : double</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
LATITUDE : double</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
GRID_VALUE : double</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>======================================================================</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>Error:
gsn_add_shapefile_polymarkers:
geometry_type attribute must be 'point'</font></div>
<div dir="ltr"><font face="comic sans ms,
sans-serif">(0)<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>
No shapefile information will be
added.</font></div>
<div><br>
</div>
<div><br>
</div>
<div>I'll appreciate any suggestion on how I
can plot this correctly.</div>
<div><br>
</div>
<div>Thank you in advance.</div>
<div><br>
</div>
<div>Lyndz</div>
<div><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
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</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Dipl. Geophys. Karin Meier-Fleischer
Visualization, NCL, CDO
Application Support
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