<div dir="ltr">Hi Andrew,<div><br></div><div>I have actually solved the problem.</div><div>GrADS <span style="font-size:12.8000001907349px">expects every NetCDF file to have latitudes and longitudes, even if your file contains only timeseries. Grads also requires the contents of the file to be CF-conforming.</span></div><div style="font-size:12.8000001907349px"><div><br></div>This latter requirement mandates that the time coordinate variable is of the units "months since ...." (or years or days since). <br><br></div><div style="font-size:12.8000001907349px"> The solution is to add lat and lon scalar arrays to the NetCDF file and save as a new NetCDF, then produce a descriptor file to open the new NetCDF.</div><div style="font-size:12.8000001907349px"><br></div><div style="font-size:12.8000001907349px">You need to first convert the <a href="http://problem.nc">problem.nc</a> to text(cdl) file using the ncdump feature eg.</div><div style="font-size:12.8000001907349px"><br></div><div style="font-size:12.8000001907349px">> ncdump -c <a href="http://problem.nc">problem.nc</a></div><div style="font-size:12.8000001907349px">> ncdump -b c <a href="http://problem.nc">problem.nc</a>>solution.cdl</div><div style="font-size:12.8000001907349px"><br></div><div style="font-size:12.8000001907349px">open the solution.cdl and add in the lon and lat. You can copy the lon and lat from other nc files that work.</div><div style="font-size:12.8000001907349px"><br></div><div style="font-size:12.8000001907349px">Then, you need to convert the solution.cdl to <a href="http://solution.nc">solution.nc</a> by using ncgen eg.</div><div style="font-size:12.8000001907349px"><br></div><div style="font-size:12.8000001907349px">> ncgen solution.cdl</div><div style="font-size:12.8000001907349px">> ncgen -o <a href="http://solution.nc">solution.nc</a> solution.cdl</div><div style="font-size:12.8000001907349px"><br></div><div style="font-size:12.8000001907349px">Then create a descriptor file to open the <a href="http://solution.nc">solution.nc</a></div><div style="font-size:12.8000001907349px">It works for me.</div><div style="font-size:12.8000001907349px"><br></div><div style="font-size:12.8000001907349px">Regards,</div><div style="font-size:12.8000001907349px">Malcolm</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jul 21, 2015 at 5:50 PM, Andrew Friedman <span dir="ltr"><<a href="mailto:andfried@gmail.com" target="_blank">andfried@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><div>I was wondering if anyone has found a solution for this question on time series netcdf files.<br><br></div>I've tried witing a control file with the x line<br><br>XDEF 1 linear 0 1<br><br></div>but it returns the following:<br><div><br>gadxdf error: Missing or invalid dimension size.<br> --> The invalid description file record is:<br> --> xdef 1 linear 0 1<br><br></div><div>Thanks,<br></div><div>Andrew<br></div><div><br><br></div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Tue, Jul 14, 2015 at 8:06 AM, Malcolm Tang <span dir="ltr"><<a href="mailto:malct32@gmail.com" target="_blank">malct32@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr"><div><div><div>Hi,<br><br></div>I have downloaded a Southern oscillation index(SOI) netcdf file, and it has only 1 dimension (time).<br><br></div>When I tried open it using "open" command, it says there is "unknown keyword in description file", when I tried open it using "sdfopen" command it says there is no discernable X coordinate.<br></div><div>And since it doesn't have x or y coordinate, how should I write a descriptor file so I could try open it using "xdfopen" command?<br><br></div><div>Can anyone please advise?<br><br></div><div>Regards,<br></div><div>Malcolm<br></div></div>
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