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    Noelia,<br>
    <br>
    I think this is the same problem you posted before.&nbsp; If you change
    the units on latitude and longitude, sdfopen should work.<br>
    The units should be "degrees_north" and "degrees_east".<br>
    <br>
    Jim<br>
    <br>
    <div class="moz-cite-prefix">On 4/29/14, 1:49 AM, Noelia otero
      wrote:<br>
    </div>
    <blockquote
cite="mid:CAG7o=Lu8q=VKeskbBJZPcv6RRkZRoNnLbhxO7DBLc_OebJ9Row@mail.gmail.com"
      type="cite">
      <div dir="ltr">Hi ,
        <div><br>
        </div>
        <div>I am having some problems to create and open a descriptor
          file. I have already read post about that, but I can't find
          the problem.</div>
        <div><br>
        </div>
        <div>This is the information from ncdump -h :</div>
        <div><br>
        </div>
        <div>
          <div>dimensions:</div>
          <div><span class="" style="white-space:pre"> </span>longitude
            = 144 ;</div>
          <div><span class="" style="white-space:pre"> </span>latitude
            = 73 ;</div>
          <div><span class="" style="white-space:pre"> </span>Time = 1
            ;</div>
          <div>variables:</div>
          <div><span class="" style="white-space:pre"> </span>double
            longitude(longitude) ;</div>
          <div><span class="" style="white-space:pre"> </span>longitude:units
            = "degreesE" ;</div>
          <div><span class="" style="white-space:pre"> </span>double
            latitude(latitude) ;</div>
          <div><span class="" style="white-space:pre"> </span>latitude:units
            = "degreesN" ;</div>
          <div><span class="" style="white-space:pre"> </span>double
            Time(Time) ;</div>
          <div><span class="" style="white-space:pre"> </span>Time:units
            = "month" ;</div>
          <div><span class="" style="white-space:pre"> </span>float
            north(Time, latitude, longitude) ;</div>
          <div><span class="" style="white-space:pre"> </span>north:units
            = "days" ;</div>
          <div><span class="" style="white-space:pre"> </span>north:missing_value
            = -999.f ;</div>
          <div><span class="" style="white-space:pre"> </span>north:long_name
            = "NorthType" ;</div>
          <div>}</div>
        </div>
        <div><br>
        </div>
        <div>I tried to open the file with sdfopen, and I got the error:</div>
        <div>
          <div>Scanning self-describing file: &nbsp;<a moz-do-not-send="true"
              href="http://file1.nc">file1.nc</a></div>
          <div>gadsdf: SDF file has no discernable X coordinate.</div>
        </div>
        <div><br>
        </div>
        <div>then, I created the data descriptor like:</div>
        <div>
          <div>DSET <a moz-do-not-send="true" href="http://file1.nc">file1.nc</a></div>
          <div>UNDEF -999</div>
          <div>TITLE cwt</div>
          <div>XDEF 144 LINEAR 0.0 2.5</div>
          <div>YDEF &nbsp;73 LINEAR &nbsp;-90 2.5</div>
          <div>TDEF &nbsp; 1 LINEAR &nbsp; jan 1961 1Mo</div>
          <div>OPTIONS yrev</div>
          <div><br>
          </div>
          <div>VARS 1</div>
          <div>north 0 99 north</div>
          <div>ENDVARS</div>
        </div>
        <div>
          <br>
        </div>
        <div>and the problem is still happening.. , now the message is:</div>
        <div>
          <div>Scanning Descriptor File: &nbsp;file1.ctl</div>
          <div>gadxdf error: Missing or invalid dimension size.</div>
          <div>&nbsp; --&gt; The invalid description file record is:&nbsp;</div>
          <div>&nbsp; --&gt; xdef 144 linear 0.0 2.5</div>
          <div>&nbsp; The data file was not opened.</div>
        </div>
        <div><br>
        </div>
        <div>anyone could give an idea?? I don't know how fix it.</div>
        <div><br>
        </div>
        <div>Thanks in advance</div>
        <div>
          <br>
        </div>
        <div>Cheers,</div>
        <div>Noelia.</div>
        <div><br>
        </div>
      </div>
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      <br>
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