<div dir="ltr">Hi Brock,<div>The third input to new is the setting for _FillValue. In the following you are setting the _FillValue to 0:</div><div><br><div> wtsnctrltotal = new((/1015,1359/),float,0)<br></div></div><div><br></div><div>I think what you want to do is this:</div><div>wtsnctrltotal = new((/1015,1359/),float,1.e20)<br></div><div>wtsnctrltotal = 0<br></div><div><br></div><div>Setting _FillValue to 0 is generally not recommended, and I'm not sure how doing that will affect this line:</div><div>wtsnctrlstep = where((notracesnowctrl .gt. 0 .and. wetbulbctrl .gt. 0),notracesnowctrl,0)<br></div><div><br></div><div>If after making that change you continue to have issues let ncl-talk know.</div><div>Adam</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jun 28, 2019 at 2:52 PM Brock Tropea 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 dir="ltr"><div><div><div>Hi everyone<br><br></div>I'm using WRF in my work, and I'm trying to make plots of accumulated precipitation over the course of an entire event. I had tried to do this in Python, but NCL works better in this instance.<br><br></div>My problem is that I don't know how to make a running total, so to speak. Without showing my entire program:<br>"...<br> wtsnctrltotal = new((/1015,1359/),float,0)<br> ...<br></div><div>do</div><div>... <br></div><div> wtsnctrlstep = where((notracesnowctrl .gt. 0 .and. wetbulbctrl .gt. 0),notracesnowctrl,0)<br> wtsnctrltotal = wtsnctrltotal + wtsnctrlstep<br>"<br></div><div><br></div><div>The "wtsnctrltotal" is just an empty array to hold the running total.<br>I have "wtsnctrlstep" as the stepwise value for whatever current record number the do loop is working on. This array has the correct values in it, and is working fine.<br><br></div><div>The specific thing that isn't working is that I cannot figure out how to add the step value to the total value, the last line of code. Checking it with PrintVarSummary as well as max/min shows 0 for everything.<br><br></div><div>I've already tried enclosing the right side of the equals with brackets, but no dice. In a very similar program I made in Python, you have a very handy operator for doing this, which is " += ". This adds another value with the variable's value and assigns the new value to the variable. This is what I'd like to do, but I've been searching for a few days and I can't find a way to do such a thing.<br><br></div><div>Of course, I'm probably going about this all wrong. Any suggestions?<br><br><br></div><div>Thank you!<br>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="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 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><font color="#888888"></font></span><div><div><span><font color="#888888"><br></font></span><div><span><font color="#888888"><a href="http://www.cgd.ucar.edu/staff/asphilli" target="_blank"></a></font></span></div></div></div></div></div></div></div></div></div></div></div>