Recipe: Fortran program as OPeNDAP client: Difference between revisions

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===== Discussion =====

The ~~three~~ (3) differences from the case where an individual downloaded file was being read are

The four (4) differences from the case where an individual downloaded file was being read are

# <code>T_file</code>: Instead of reading a downloaded NetCDF-4 file, we read an OPeNDAP URL.

# <code>start</code>: Via the OPeNDAP URL, we can now access all time levels. The hourly <code>inst</code> files are available starting at 2005/15/15 2200z. Our desired time, 2006/09/18 0900z is then the 11772<sup>th</sup> file.

# <code>nf90_inq_varid</code>: While in the downloaded file, the temperature variable appears in the uppercase (T), on the OPeNDAP server, this variable is in lowercase (see http://opendap.nccs.nasa.gov:9090/dods/OSSE/GEOS-5.12/BETA9/0.5000_deg/inst/inst01hr_3d_T_Cv). This is reflected in the call to nf90_inq_varid.

# <code>start</code>: Via the OPeNDAP URL, we now have access to all times for which data exists. The hourly <code>inst</code> files are available starting at 2005/15/15 2200z. Our desired time, 2006/09/18 0900z is then the 11772<sup>th</sup> file.

==== Compile and link ====

@@ Line 237: / Line 237: @@
 ===== Discussion =====
-The three (3) differences from the case where an individual downloaded file was being read are
+The four (4) differences from the case where an individual downloaded file was being read are
 # <code>T_file</code>: Instead of reading a downloaded NetCDF-4 file, we read an OPeNDAP URL.
-# <code>start</code>: Via the OPeNDAP URL, we can now access all time levels. The hourly <code>inst</code> files are available starting at 2005/15/15 2200z. Our desired time, 2006/09/18 0900z is then the 11772<sup>th</sup> file.
 # <code>nf90_inq_varid</code>: While in the downloaded file, the temperature variable appears in the uppercase (T), on the OPeNDAP server, this variable is in lowercase (see http://opendap.nccs.nasa.gov:9090/dods/OSSE/GEOS-5.12/BETA9/0.5000_deg/inst/inst01hr_3d_T_Cv). This is reflected in the call to nf90_inq_varid.
+# <code>start</code>: Via the OPeNDAP URL, we now have access to all times for which data exists. The hourly <code>inst</code> files are available starting at 2005/15/15 2200z. Our desired time, 2006/09/18 0900z is then the 11772<sup>th</sup> file.
 ==== Compile and link ====