GEMPAK Online Tutorial
21 Importing data
Importing Data into GEMPAK Format
We've already discussed using the GEMPAK edit programs to
import data into GEMPAK format. One thing that must be done
for research data sets which contain special PAM, MESONET,
Aircraft, Dropsonde, or other special station locations is
to create a station table for those locations.
SNEDIT will create a sounding file using the inbedded
station location information if available. Otherwise,
you must provide a pre-generated sounding file. Importing surface
data always requires that SFCFIL be used in advance to
create a file for the new dataset.
When you create your new GEMPAK file, the program asks for the
name of a station file. For research datasets, it is probable that
special sensor locations will not be an any of the distributed
tables. When creating your own station tables follow the format used
in provided station tables.
To import data research data, you must first determine the
appropriate file format: Surface, Sounding or Grid.
The format which you use depends on the type of data you wish to
import. The GEMPAK editing programs will import data in columnar
fields. Follow the format of the output of one of the listing programs:
SFLIST, SNLIST or GDLIST when generating your ascii files for input.
Lets try
importing some aircraft data.
Now that you have a GEMPAK data set, see about
accessing the data set from a GUI.
GEMPAK Online Tutorial