<div dir="ltr">Before doing the division, you need to use the where function to set 0 values to a fill values. Then, they will be ignored.<div><br></div><div>For example,</div><div><br></div><div><p style="color:rgb(0,0,0);font-family:Times;font-size:medium">Perhaps you want to set psi to _FillValue wherever it is equal to 0 before you do the calculation:<br></p><p style="color:rgb(0,0,0);font-family:Times;font-size:medium"> psi = where(psi.ne.0,psi,psi@_FillValue), <br></p>Then</div><div><br></div><div>Y = X/psi should work.</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Dec 5, 2019 at 12:21 PM Karin Meier-Fleischer via ncl-talk <<a href="mailto:ncl-talk@ucar.edu">ncl-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">
Hi Atul,<br>
<br>
do you want to calculate the avg and the stddev on the longitude
coordinate? The functions dim_avg and dim_stddev do the calculations
on the right- most dimension. If you want to do it on the time
dimension then you should use dim_avg_n and dim_stddev_n functions.<br>
<br>
To prevent division by 0 you can use the where function. Searching
the internet will give you some ncl-talk answers to this issue.<br>
<br>
-Karin<br>
<br>
<br>
<div>Am 05.12.19 um 10:51 schrieb Atul Saini
via ncl-talk:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div><font size="4">Hi NCL,</font></div>
<div><font size="4"> I am trying to plot the map
showing calculate gridwise coefficient of variation but it
is not getting plotted and one error is Division by 0, Can't
continue. Please help!</font><br>
</div>
<div>
<div>
<div dir="ltr">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div><font size="4"><br>
</font></div>
<div><font size="4">Please
find the
script file
and data file
attached.</font></div>
<div><font size="4">Please
help, it's
urgent.<br>
</font></div>
<div><font size="4"><br>
</font></div>
<div><font size="4">Regards,</font></div>
<div><br>
</div>
<div><img src="https://docs.google.com/uc?export=download&id=1flpEpH50fxgPRxFvuyiLu2A70K0UoFx-&revid=0Byj9ykpbAx3od3R4N016WWh0MnlGQ1JHUTg4Nk5HVmVMS2ZNPQ" width="304" height="116"><br>
</div>
<div>
<br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<fieldset></fieldset>
<pre>_______________________________________________
ncl-talk mailing list
<a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a>
List instructions, subscriber options, unsubscribe:
<a href="http://mailman.ucar.edu/mailman/listinfo/ncl-talk" target="_blank">http://mailman.ucar.edu/mailman/listinfo/ncl-talk</a></pre>
</blockquote>
<br>
</div>
_______________________________________________<br>
ncl-talk mailing list<br>
<a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a><br>
List instructions, subscriber options, unsubscribe:<br>
<a href="http://mailman.ucar.edu/mailman/listinfo/ncl-talk" rel="noreferrer" target="_blank">http://mailman.ucar.edu/mailman/listinfo/ncl-talk</a></blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr">Barry H. Lynn, Ph.D<div><div>Senior Associate Scientist, Lecturer,</div><div><div><span style="color:rgb(136,136,136)">The Institute of the Earth Science, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">The Hebrew University of Jerusalem, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Givat Ram, Jerusalem 91904, Israel </span><br style="color:rgb(136,136,136)"></div><span style="color:rgb(136,136,136)">Tel: 972 547 231 170</span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Fax: (972)-25662581</span></div></div><div><span style="color:rgb(136,136,136)"><br></span></div><div>C.E.O, Weather It Is, LTD<br>Weather and Climate Focus<br><a href="http://weather-it-is.com" target="_blank">http://weather-it-is.com</a><br>Jerusalem, Israel<br>Local: 02 930 9525<br>Cell: 054 7 231 170<br>Int-IS: x972 2 930 9525<br><br></div></div></div></div></div>