<div dir="ltr"><div><div><div><div>GrADS users, <br><br></div>I&#39;m using h5dump to write a control file for an HDF5 GPM file; however, I&#39;m not sure how to interpret its contents. I used the command &#39;h5dump -H 3B-DAY.GPM.DPRGMI.CORRAGD.20150315-S000000-E235959.074.V03D.HDF5&#39; and got a lot of text, only part of which I included below:<br><br> GROUP &quot;precipTotDm&quot; {<br>            DATASET &quot;count&quot; {<br>               DATATYPE  H5T_STD_I32LE<br>               DATASPACE  SIMPLE { ( 3, 16, 2, 1440, 536 ) / ( 3, 16, 2, 1440, 536 ) }<br>               ATTRIBUTE &quot;CodeMissingValue&quot; {<br>                  DATATYPE  H5T_STRING {<br>                     STRSIZE 101;<br>                     STRPAD H5T_STR_NULLTERM;<br>                     CSET H5T_CSET_ASCII;<br>                     CTYPE H5T_C_S1;<br>                  }<br>                  DATASPACE  SCALAR<br>               }<br>               ATTRIBUTE &quot;DimensionNames&quot; {<br>                  DATATYPE  H5T_STRING {<br>                     STRSIZE 18;<br>                     STRPAD H5T_STR_NULLTERM;<br>                     CSET H5T_CSET_ASCII;<br>                     CTYPE H5T_C_S1;<br>                  }<br>                  DATASPACE  SCALAR<br>               }<br>            }<br>            DATASET &quot;mean&quot; {<br>               DATATYPE  H5T_IEEE_F32LE<br>               DATASPACE  SIMPLE { ( 3, 16, 2, 1440, 536 ) / ( 3, 16, 2, 1440, 536 ) }<br>               ATTRIBUTE &quot;CodeMissingValue&quot; {<br>                  DATATYPE  H5T_STRING {<br>                     STRSIZE 101;<br>                     STRPAD H5T_STR_NULLTERM;<br>                     CSET H5T_CSET_ASCII;<br>                     CTYPE H5T_C_S1;<br>                  }<br>                  DATASPACE  SCALAR<br>               }<br>               ATTRIBUTE &quot;DimensionNames&quot; {<br>                  DATATYPE  H5T_STRING {<br>                     STRSIZE 18;<br>                     STRPAD H5T_STR_NULLTERM;<br>                     CSET H5T_CSET_ASCII;<br>                     CTYPE H5T_C_S1;<br>                  }<br>                  DATASPACE  SCALAR<br>               }<br>            }<br>            DATASET &quot;stdev&quot; {<br>               DATATYPE  H5T_IEEE_F32LE<br>               DATASPACE  SIMPLE { ( 3, 16, 2, 1440, 536 ) / ( 3, 16, 2, 1440, 536 ) }<br>               ATTRIBUTE &quot;CodeMissingValue&quot; {<br>                  DATATYPE  H5T_STRING {<br>                     STRSIZE 101;<br>                     STRPAD H5T_STR_NULLTERM;<br>                     CSET H5T_CSET_ASCII;<br>                     CTYPE H5T_C_S1;<br>                  }<br>                  DATASPACE  SCALAR<br>               }<br>               ATTRIBUTE &quot;DimensionNames&quot; {<br>                  DATATYPE  H5T_STRING {<br>                     STRSIZE 18;<br>                     STRPAD H5T_STR_NULLTERM;<br>                     CSET H5T_CSET_ASCII;<br>                     CTYPE H5T_C_S1;<br>                  }<br>                  DATASPACE  SCALAR<br>               }<br>            }<br>         }<br>         GROUP &quot;precipTotLogNw&quot; {<br>            DATASET &quot;count&quot; {<br>               DATATYPE  H5T_STD_I32LE<br>               DATASPACE  SIMPLE { ( 3, 16, 2, 1440, 536 ) / ( 3, 16, 2, 1440, 536 ) }<br>               ATTRIBUTE &quot;CodeMissingValue&quot; {<br>                  DATATYPE  H5T_STRING {<br>                     STRSIZE 101;<br>                     STRPAD H5T_STR_NULLTERM;<br>                     CSET H5T_CSET_ASCII;<br>                     CTYPE H5T_C_S1;<br><br><br></div>I&#39;m not sure how to find the xdef, ydef, zdef, and tdef from this data. Also, I am unsure of how to find the variables. Would they be what is after GROUP? If so, how do I figure out the letter/word that allows me to display the variable on GrADS (ex. precipitation -------&gt; p)? Is it something that I create myself?<br><br></div>Thanks,<br><br></div>-Justin<br></div>