Getting the test data

Hopefully you have now worked out any software-environment problems you might have had before, and you are ready for your ``test drive''. Make a directory somewhere convenient (like under your home directory) and cd or pushd (as you prefer) into it. (If you are reading the electronic document and opened the window by pushing the button on the previous page, you will find yourself in the directory where the data is. We still recommend that you make a private directory for test purposes.)

You need some data in this directory to experiment on. To get some, do:

cp /sepcd2/sep73/joe1/Tx?.H .
mkdir Data
cp /sepcd2/sep73/joe1/Data/Tx?.H@ ./Data

(If the files were not there, tell the person who installed SEPlib on your computer that they need to customize this document for your particular site by modifying the list of site-dependent paths kept in the file ``sitepaths.tex''.)

You should now be the proud owner of six files: Data/Txx.H@, Data/Txy.H@, and Data/Txz.H@, the actual data files, and Txx.H, Txy.H, and Txz.H, the so-called ``history'' files. History files contain all the information about the data that is needed by SEPlib programs, such as the path to the corresponding data file. This way you can keep large data files in places where they are more welcome. We will introduce history files in detail in the next section.

Plot one of the data files by doing

Wiggle < Txx.H | Tube

When you run the command above Wiggle creates a plot which Tube then tries to display on your screen. Did it work? Hopefully your screen will look something like the one in Figure . (If when you try it ``Tube'' does the plot using Xtpen, like in the figure, exit the program by clicking on the QUIT button at the top of the window. If you are using some other sort of graphics device you may have to hit return or space to exit, or the program may simply exit when the plot is done without any prompting from you.) Try plotting Txy.H and Txz.H too.

 

Screen
Figure 1 Wiggle < Txx.H | Tube