GNU Plot is not installed in SuSE 11.1 by default. But, the installation is fairly simple. It is going to take less than a minute !
The easiest way to install Gnu Plot is to use the Installation disk. Just a package needs to be installed ! The steps are as follows -
1. Go to YaST Control Center. Select ‘Software’ on the left panel and then open ‘Software Management’ on the right.
2. Make a search for ‘gnuplot’.
3. The is only one package for gnuplot. Check mark that. Have a look at the snap if something wasn’t clear.
YaSt Software management
4. Click on Accept and the Installation start. Remember to insert the Installtion disk when propmted. 
