Category : Science and Education
Archive   : UCALC28.ZIP
Filename : PLOTDEMO

; To run this demo, type UCALC < PLOTDEMO at the DOS prompt.
; Please remember to register.

prec 4 ; Many graphs do not require high precision for visual accuracy.
gcolor 8 ; GCOLOR sets the background color.

plot
y=sin(x) ; Try the different menu options,
y=2sin(x) ; and then press [Esc] to move on to the next screen.
y=3sin(x)
y=4sin(x)

plot y=x*sin(x)-2

grid 7

plot y=x*sin(x)-2, 1 to 5 ; Same equation, but within an interval

grid 0 ; grid is turned off
prec 10 ; precision is reset to default

plot r=t/pi, 0 to 5pi ; Polar equation
plot x=cos(t)-cos(2t), y=sin(t)-sin(2t), 0 to 2pi ; Parametric equation
plot 3*sin(t), t, -7.5 to 7.5 ; Another parametric equation

window(0,10,0,8) ; (0,0) is now on the bottom left of the screen
plot x^sin(x)

window(-10,10,-7.5,7.5) ; Back to the default window setting

plot ; Plot by itself prompts for multiple equations
line(-6,-5,-1,4)
y=sin(x)
y=2sin(x)
r=2cos(3t)
x=2cos(t), y=2sin(t)
rect(5,3,7,7)
fill(6,4)

plot"graph1.dat" ; Plots the data from another file

plot
sin(x)
rect(-9,-5,-4,-2)
"graph2.dat"

exit