<div dir="ltr"><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif">Tabish,</font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif"><br></font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif">Since you didn't include a sample code, I wrote a simple program to write a dummy E_ALD variable to a NetCDF file, using the same dimension names you indicated in the email. I then wrote another script that does the same thing you have with:</font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif"><br></font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif">a1->E_ALD(:,0,:,:) = E_ALD_00z(:,:,:)<br></font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif"><br></font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif">It worked just fine for me, and produced a new file with the new values.</font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif"><br></font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif">In order to debug your problem, I need more information, like the printVarSummary output for both E_ALD and E_ALD_00z:</font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif"><br></font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif">printVarSummary(a1->E_ALD)</font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif">printVarSummary(E_ALD_00z)</font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif"><br></font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif"> and what version of NCL you have:</font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif"><br></font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif">ncl -V</font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif"><br></font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif">Finally, it would help if we could see the script as well, and even better if you can provide the data.</font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif"><br></font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif">--Mary</font></div><div class="gmail_default"><font color="#000000" face="arial, helvetica, sans-serif"><br></font></div><div class="gmail_default" style="font-size:small"><span style="font-family:georgia,serif;font-size:12.8px;color:rgb(61,133,198)"><br></span></div><div class="gmail_default" style="font-size:small"><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Jun 19, 2016 at 3:55 PM, Tabish Ansari <span dir="ltr"><<a href="mailto:tabishumaransari@gmail.com" target="_blank">tabishumaransari@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default"><span style="font-family:georgia,serif">Hi <br><br></span></div><div class="gmail_default"><span style="font-family:georgia,serif">I am trying to do an assignment operation in the following way:<br><br><span style="color:rgb(61,133,198)">a1->E_ALD(:,0,:,:) = E_ALD_00z(:,:,:)</span><br><br></span></div><div class="gmail_default"><span style="font-family:georgia,serif">Here the LHS is a 4d array variable that I'm reading from a netcdf file a1. RHS is another array which is 3d and matches the shape of E_ALD(:,0,:,:)<br><br></span></div><div class="gmail_default"><span style="font-family:georgia,serif">LHS dimensions are (Time, vert_level, lat, lon)<br></span></div><div class="gmail_default"><span style="font-family:georgia,serif">RHS dimensions are (Time, lat, lon)<br></span></div><div class="gmail_default"><span style="font-family:georgia,serif"><br></span></div><div class="gmail_default"><span style="font-family:georgia,serif">I want the LHS array to retain all its attributes including dimension names etc. but just want to replace the values inside the array.<br><br></span></div><div class="gmail_default"><span style="font-family:georgia,serif">I am getting the following error:<br><br><span style="color:rgb(61,133,198)">warning:Dimension names of left hand side and right hand side do not match, overwriting dimension (Time), use (/ .. /) if this is not the desired result<br>ncdimrename: ncid 65536: NetCDF: String match to name in use<br>fatal:Could not change dimension (4) to (Time) for file (wrfchemi_00z_d01_agri_Oct)<br>warning:Dimension names of left hand side and right hand side do not match, overwriting dimension (south_north), use (/ .. /) if this is not the desired result<br>ncdimrename: ncid 65536: NetCDF: String match to name in use<br>fatal:Could not change dimension (1) to (south_north) for file (wrfchemi_00z_d01_agri_Oct)<br>warning:Dimension names of left hand side and right hand side do not match, overwriting dimension (west_east), use (/ .. /) if this is not the desired result<br>ncdimrename: ncid 65536: NetCDF: String match to name in use<br>fatal:Could not change dimension (0) to (west_east) for file (wrfchemi_00z_d01_agri_Oct)</span><span style="color:rgb(255,0,0)"><br></span><br></span></div><div class="gmail_default"><span style="font-family:georgia,serif">Please help me get this right.<br><br></span></div><div class="gmail_default"><span style="font-family:georgia,serif">Many thanks!<br><br></span></div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif"><span style="font-family:verdana,sans-serif"><span style="font-family:georgia,serif">Tabish</span><br></span></div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif"><br><br clear="all"></div><div><div data-smartmail="gmail_signature"><div dir="ltr"><div><div><font size="1"><span style="font-family:tahoma,sans-serif">Tabish U Ansari<br></span></font></div><font size="1"><span style="font-family:tahoma,sans-serif">PhD student, Lancaster Environment Center<br></span></font></div><font size="1"><span style="font-family:tahoma,sans-serif">Lancaster Univeristy<br> <span>Bailrigg</span>, <span>Lancaster</span>, <br><span>LA1 4YW</span>, <span>United Kingdom</span></span></font><br></div></div></div>
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