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    Hi Noelia,<br>
    <br>
    NCL can't create a new file when it already exits. You have to make
    sure that the file doesn't exist or delete it before using addfile.<br>
    <br>
    <font color="#3333ff"><tt>system("rm -rf "+file_out)</tt><tt><br>
      </tt><tt>wrfpost = addfile(file_out,"c")</tt></font><br>
    <br>
    -Karin<br>
    <br>
    <div class="moz-cite-prefix">Am 19.01.18 um 13:15 schrieb Noelia
      otero via ncl-talk:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAG7o=LvgLFkojUU=WiPBfGD5zWBkPM6PhWxgKjJn4G_r_bjLyw@mail.gmail.com">
      <div dir="ltr">Hi all,
        <div><br>
        </div>
        <div>I have hourly files from WRF and I wanted to create daily
          files (with the hourly outputs, Time=24). I was using
          addfile(, "c")....I know the error I got it is caused by "c",
          once the first file is created I can´t opened again..(If I am
          not wrong, right?) Is there any way to do it?</div>
        <div><br>
        </div>
        <div>
          <div>
            <div>print(file_in)</div>
            <div>; wrfout_d01_2010-01-01_00:00:<a href="http://00.nc"
                moz-do-not-send="true">00.nc</a></div>
            <div>wrfin = addfile(file_in,"r")</div>
            <div><br>
            </div>
            <div>; I want the output: file_out=<a
                href="http://met_wrfout_d01_2010-01-01.nc"
                moz-do-not-send="true">met_wrfout_d01_2010-01-01.nc</a> </div>
            <div>wrfpost = addfile(file_out,"c")    ;create new netCDF
              file<br>
            </div>
            <div><br>
            </div>
            <div>pres_pa = wrf_user_getvar(wrfin,"pres",-1)</div>
            <div>t_k = wrf_user_getvar(wrfin,"tk",-1)</div>
          </div>
          <div><br>
          </div>
          <div>
            <div>wrfpost->t_k= t_k</div>
            <div>wrfpost->pres_pa= pres_pa</div>
          </div>
          <div>
            <div><br>
            </div>
            <div>Time = wrf_user_getvar(wrfin,"Times",-1)</div>
            <div>lat = wrf_user_getvar(wrfin,"lat",-1)</div>
            <div>lon = wrf_user_getvar(wrfin,"lon",-1)</div>
            <div><br>
            </div>
            <div>wrfpost->time    = Time</div>
            <div>wrfpost->lat= lat</div>
            <div>wrfpost->lon= lon</div>
          </div>
        </div>
        <div><br>
        </div>
        <div><br>
        </div>
        <div>Thanks in advance,</div>
        <div>Best</div>
        <div>Noelia</div>
        <div><br>
        </div>
      </div>
      <br>
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      <br>
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    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">-- 
Dipl. Geophys. Karin Meier-Fleischer
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