The following instructions explain how to download the TeraScan Sample Data to a TeraScan system and place it in the $DATADIR directory. Step 4 explains how to make links to the .view files in each of the $DATADIR/sampledata subdirectories so that the sample data is available to the TeraVision Data Library. The sample data is used in the TeraVision Tutorial of the TeraScan Training Guides.
Since $DATADIR is owned by root, you must be root to place the tar file in $DATADIR and untar it there.
1. As root, download the sampledata.tar file and save it to $DATADIR.
2. Change directories to $DATADIR:
$ cd $DATADIR
3. Extract the sampledata files from the tar file. Extraction will create a sampledata directory in $DATADIR with four subdirectories (AVHRR, GOES-8, METEOSAT, SeaWiFS):
# tar xvf sampledata.tar
# ls
sampledata sampledata.tar
# cd sampledata
# ls
AVHRR GOES-8 METEOSAT SeaWiFS
4. Create TeraVision Data Library shelves for each subdirectory as follows:
# /bin/ln -s $DATADIR/sampledata/AVHRR/AVHRR.view $REFDATA/favorites/General/AVHRR
# /bin/ln -s $DATADIR/sampledata/GOES-8/GOES-8.view $REFDATA/favorites/General/GOES-8
# /bin/ln -s $DATADIR/sampledata/METEOSAT/METEOSAT.view $REFDATA/favorites/General/METEOSAT
# /bin/ln -s $DATADIR/sampledata/SeaWiFS/SeaWiFS.view $REFDATA/favorites/General/SeaWiFS
5. To verify that links have been made as intended:
# cd $REFDATA/favorites/General
# ls -al
You should see a link to each of the four .view files in the sampledata subdirectories (AVHRR.view, GOES.view, METEOSAT.view, and SeaWiFS.view).
6. Now when you run TeraVision as a TeraScan user or a TeraScan Admin user, you should see Public shelves to the sampledata directories.
7. When sample data installation is complete, go to $DATADIR and (as root) remove the sampledata.tar file:
# cd $DATADIR
# rm sampledata.tar