Error bar example
The following script demonstrates the plotting of error bars. See the figure below.
X=[0:20] ! generate some "data"
Y=X^2-20*X+50 !
YEL=10*RAN(X) ! lower error
YEU=10*RAN(X) ! upper error
YES=20*RAN(X) ! symmetric error
SET PLOTSYMBOL -1 ! set plotting symbol
WINDOW 5 ! set window
SET XLABEL 'Asymmetric errors'
GRAPH X Y YEL,,YEU ! plot with asymmetric errors
WINDOW 6 ! change windows
SET XLABEL 'Symmetric errors'
GRAPH X Y YES ! plot with symmetric errors