Cartesian Plane
- by NuNu
I'm trying to define a function in Haskell that takes an integer argument c and returns the list of all points on the cartesian plane of the form (x/c,y/c) where x and y are integers.
x/c is between -2 and 1 and y/r is between -1 and 1
This is what I've gotten so far which I'm almost sure is right but I'm getting a parse error on input = when I run it particularly at this line: cart xs ys c = [(y/c,x/c) | x <- xs, y <- ys]
plane :: Int -> [a]
plane c = cart [-1*c .. 1*c] [-2*c .. 1*c] c
cart xs ys c = [(y/c,x/c) | x <- xs, y <- ys]
A sample output would be: plane 1 would generate:
[(-2.0, -1.0), (-1.0, -1.0), ( 0.0, -1.0), ( 1.0, -1.0),
(-2.0, 0.0), (-1.0, 0.0), ( 0.0, 0.0), ( 1.0, 0.0),
(-2.0, 1.0), (-1.0, 1.0), ( 0.0, 1.0), ( 1.0, 1.0)]
Anyone have any idea how I can fix this! Thanks
