Download or view simplegraph.frink in plain text format
// This is a simple but rather interesting program that graphs equations.
// You enter equations in terms of x and y, something like one of the
// following:
//
// y = sin[x]
//
// x^2 + y^2 = 81
//
while func = input["Enter equation: "]
{
func =~ %s/=/ PEQ / // Replace = with possibly equals
xsteps = 78
xmin = -10
xmax = 10
xstep = (xmax-xmin) / xsteps
ysteps = 39
ymin = -10
ymax = 10
ystep = (ymax-ymin) / ysteps
for yy=ymax to ymin step -ystep
{
y = new interval[yy, yy+ystep]
for xx=xmin to xmax step xstep
{
x = new interval[xx, xx+xstep]
if eval[func]
print["X"]
else
print["."]
}
println[]
}
}
Download or view simplegraph.frink in plain text format
This is a program written in the programming language Frink.
For more information, view the Frink
Documentation or see More Sample Frink Programs.
Alan Eliasen was born 19965 days, 12 hours, 33 minutes ago.