<div dir="ltr"><div>Dear NCL users,</div><div><br></div><div>I am trying to plot the total dust
concentration from the WRF-Chem output. To achieve this end, I sum over 5
dust bin sizes (check the attached script) this way:</div><div><span style="background-color:rgb(255,229,153)"> "at= a1+a2+a3+a4+a5".</span></div><div><span style="background-color:rgb(255,229,153)"><br></span></div><div><span style="background-color:rgb(255,229,153)">I am not sure if this way of summation over 5 variables work correctly!<br></span></div><div><span style="background-color:rgb(255,229,153)"><br></span></div><div><span style="background-color:rgb(255,229,153)"><span style="background-color:rgb(255,255,255)">However, as you can see from the attached screenshot, I received some errors. The first error is weird to me cause <span style="background-color:rgb(234,153,153)">I did not define the variable "x" in my script</span>.</span><br></span></div><div><span style="background-color:rgb(180,167,214)">"fatal:(missing) is not a named dimension in variable (x)". <br></span></div><div><span style="background-color:rgb(180,167,214)"><br></span></div><div><span style="background-color:rgb(180,167,214)"><span style="background-color:rgb(255,255,255)">What is wrong with my script that NCL cannot recognize the "(Day)" variable?</span><br></span></div><div><span style="background-color:rgb(180,167,214)"><br></span></div><div><span style="background-color:rgb(255,255,255)">Please kindly advise me in terms of these issues.</span></div><div><span style="background-color:rgb(180,167,214)"><span style="background-color:rgb(255,255,255)">Best wishes,</span><br></span></div><div class="gmail_chip gmail_drive_chip" style="width:396px;height:18px;max-height:18px;background-color:#f5f5f5;padding:5px;color:#222;font-family:arial;font-style:normal;font-weight:bold;font-size:13px;border:1px solid #ddd;line-height:1"><a href="https://drive.google.com/file/d/1_YBJguj3TFdH8ih6rIxE7pz8HeFlqmgE/view?usp=drive_web" target="_blank" style="display:inline-block;max-width:366px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-decoration:none;padding:1px 0;border:none" aria-label="DUST_chem.nc.gz"><img style="vertical-align: bottom; border: none;" src="https://ssl.gstatic.com/docs/doclist/images/icon_10_generic_list.png"> <span dir="ltr" style="color:#15c;text-decoration:none;vertical-align:bottom">DUST_chem.nc.gz</span></a><img src="//ssl.gstatic.com/ui/v1/icons/common/x_8px.png" style="display:none; opacity: 0.55; cursor: pointer; float: right; position: relative; top: -1px; "></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">S.Rahimi<br><br></div></div>