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Hi Danielle,<br>
<br>
maybe you have to delete the workstation to close the PDF file (see
also <a class="moz-txt-link-freetext" href="http://www.pyngl.ucar.edu/Functions/Ngl.delete_wks.shtml">http://www.pyngl.ucar.edu/Functions/Ngl.delete_wks.shtml</a>)<br>
<br>
...<br>
Ngl.delete_wks(wks)<br>
Ngl.end()<br>
<br>
-Karin<br>
<br>
<br>
<div class="moz-cite-prefix">Am 09.07.19 um 22:44 schrieb Danielle
Touma:<br>
</div>
<blockquote type="cite"
cite="mid:CAEgQBNnoS6Or076-4BfXW+zRYGpwzW63or4zTy+wXM6qcXU7NQ@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">Hi Karin,
<div><br>
</div>
<div>I am a new user of PyNGL (though a long-time user of NCL),
and I really appreciate how straightforward you have made the
transition! Well done.</div>
<div><br>
</div>
<div>This may not be helpful to solve Mark's problem, but I
would like to add that I have a similar issue with using
Ngl.end() in the python command line. If I don't run Ngl.end()
then my pdf does not complete the plotting (even though I run
Ngl.frame(wks) ) and I am unable to open the pdf. If I do run
Ngl.end(), the plotting works and I am able to open the pdf.
However, I have to exit python and reopen it so that I can
open a new workstation. It seems that the Ngl.end() command
causes a disconnect from the plotting/graphics for the
session.</div>
<div><br>
It might be something to do with the computing environment we
are working on, since I tend to have some issues with Casper
(UCAR) and graphics (XQuartz) in general.</div>
<div><br>
</div>
<div>Does this help you understand the issue more? If so, do you
have any ideas how to overcome this?</div>
<div><br>
</div>
<div>Best,<br>
</div>
<div>Danielle</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Jul 9, 2019 at 11:56
AM Karin Meier-Fleischer via pyngl-talk <<a
href="mailto:pyngl-talk@ucar.edu" moz-do-not-send="true">pyngl-talk@ucar.edu</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF"> I'm not able to reproduce the error, I
was able to rerun it without restarting the kernel. Maybe it
would be a good idea to delete those lines which are not
needed like import of modules you are not using. Start with
a short clean script and use more code cells. If you want to
display the plot inline you can produce a PNG file, see
attached notebook. <br>
<br>
-Karin<br>
<br>
<div class="gmail-m_6182923316836806705moz-cite-prefix">Am
09.07.19 um 19:18 schrieb Mark England:<br>
</div>
<blockquote type="cite"> Hi Karin,
<div><br>
</div>
<div>Attached. It is very simple and doesn’t need any data
(just map plotting). </div>
<div>If you run it once, it should work, however if you
rerun the plotting cell (perhaps try to change the
latitude or something) it will give you that error.</div>
<div><br>
</div>
<div>Mark<br>
</div>
<br>
<fieldset
class="gmail-m_6182923316836806705mimeAttachmentHeader"></fieldset>
<div>
<div><br>
<blockquote type="cite">
<div>On 9 Jul 2019, at 10:02, Karin Meier-Fleischer
<<a href="mailto:meier-fleischer@dkrz.de"
target="_blank" moz-do-not-send="true">meier-fleischer@dkrz.de</a>>
wrote:</div>
<br
class="gmail-m_6182923316836806705Apple-interchange-newline">
<div>
<div style="overflow-wrap: break-word;">Hi Mark,
<div><br>
</div>
<div>sometimes I have similar problems using
notebook and PyNGL running with the same
preconditions and have to restart the kernel.
I don’t know if it is caused by PyNGL because
I get other error messages. Is it possible to
send the .ipynb file with test data to try to
reproduce your errors?</div>
<div><br>
</div>
<div>-Karin<br>
<div><br>
<blockquote type="cite">
<div>Am 09.07.2019 um 18:52 schrieb Mark
England via pyngl-talk <<a
href="mailto:pyngl-talk@ucar.edu"
target="_blank" moz-do-not-send="true">pyngl-talk@ucar.edu</a>>:</div>
<br
class="gmail-m_6182923316836806705Apple-interchange-newline">
<div>
<div style="overflow-wrap: break-word;">
<div>Hi there,</div>
<div><br>
</div>
<div>I am trying to transition to
using PyNGL (using Jupiter Notebook,
Python v3.7.3) on my Mac (Mojave
10.14.5).</div>
<div>I am just trying to create simple
plots (code below, mostly taken from
the examples online. When I run the
script first, it works fine and the
pdf is created exactly as
advertised. All the relevant modules
are loaded.</div>
<div>However if I re-run the plotting
section of code in the Notebook, I
get this error:</div>
<div><br>
</div>
<div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">fatal:["Error.c":406]:ErrorInitialize:Only
one instance of ErrorClass is
supported</span></div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">fatal:Unable to
initialize layer-Can't Create</span></div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">fatal:Error Creating
ErrorClass object</span></div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">fatal:Unable to
initialize layer-Can't Create</span></div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">fatal:Unable to
initialize layer-Can't Create</span></div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">fatal:_NhlCreate:Unable
to access "default" App object</span></div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">fatal:_NhlCreate:Invalid
Parent id #-4</span></div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">fatal:NhlGetValues:PID
#-4 is invalid</span></div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">fatal:PID #-4 can't
be found in NhlSetValues</span></div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">warning:maximize_plots:
Invalid workstation. No plot
maximization can take place.</span></div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">fatal:NhlDraw:
Invalid Layer Id: -4</span></div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">fatal:Unable to
update Workstation with PID#-4</span></div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">fatal:Unable to clear
Workstation with PID#-4</span></div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">fatal:NhlDraw:
Invalid Layer Id: -4</span></div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">fatal:Unable to
update Workstation with PID#-4</span></div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">fatal:Unable to clear
Workstation with PID#-4</span></div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures">fatal:Unable to
Destroy (Bad PID#0)</span></div>
</div>
<div
style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo"><span
style="font-variant-ligatures:no-common-ligatures"><br>
</span></div>
<span>I can only get the figure again,
if, in the Kernel menu, I ‘restart
and run all’. It seems to be a
problem with the graphics? I have
xQuartz installed. From a similar
topic I found online,
they removed Ngl.end() at the end,
however that doesn’t work for me.</span>
<div><span><br>
</span></div>
<div><span>Thanks,</span></div>
<div><span><br>
</span></div>
<div><span>Mark</span></div>
</div>
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<div
style="font-variant-ligatures:normal;font-variant-east-asian:normal;line-height:normal"><font
face="Garamond" color="#747474">Mark
England, PhD.</font></div>
<div
style="font-variant-ligatures:normal;font-variant-east-asian:normal;line-height:normal"><font
face="Garamond" color="#747474">Columbia
University,</font></div>
<div
style="font-variant-ligatures:normal;font-variant-east-asian:normal;line-height:normal"><font
face="Garamond" color="#747474"><i>Bakhmeteff
Research Fellow in Fluid Mechanics, </i></font></div>
<div
style="font-variant-ligatures:normal;font-variant-east-asian:normal;line-height:normal"><font
face="Garamond" color="#747474">Email: <a
href="mailto:mre2126@columba.edu"
target="_blank" moz-do-not-send="true">mre2126@columbia.edu</a>, <a
href="mailto:markengland20@gmail.com"
target="_blank" moz-do-not-send="true">markengland20@gmail.com</a></font></div>
<div
style="font-variant-ligatures:normal;font-variant-east-asian:normal;line-height:normal"><font
face="Garamond" color="#747474">Website: <a
href="http://markrossengland.com"
target="_blank" moz-do-not-send="true">markrossengland.com</a></font></div>
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<br>
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</blockquote>
<br>
<pre class="gmail-m_6182923316836806705moz-signature" cols="72">--
Dipl. Geophys. Karin Meier-Fleischer
Visualization, NCL, CDO, PyNGL
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="gmail-m_6182923316836806705moz-txt-link-abbreviated" href="mailto:meier-fleischer@dkrz.de" target="_blank" moz-do-not-send="true">meier-fleischer@dkrz.de</a>
URL: <a class="gmail-m_6182923316836806705moz-txt-link-abbreviated" href="http://www.dkrz.de" target="_blank" moz-do-not-send="true">www.dkrz.de</a>
Geschäftsführer: Prof. Dr. Thomas Ludwig
Sitz der Gesellschaft: Hamburg
Amtsgericht Hamburg HRB 39784
</pre>
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<div><br>
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-- <br>
<div dir="ltr" class="gmail_signature">
<div dir="ltr"><b>Danielle Touma</b>
<div>Postdoctoral Scholar</div>
<div>Bren School of Environmental Science & Management</div>
<div>University of California, Santa Barbara</div>
<div><a href="mailto:touma@ucsb.edu" target="_blank"
moz-do-not-send="true">touma@ucsb.edu</a></div>
<div>(919) 449-6377</div>
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