My Library: Plot Library

My name: Thaddeus Ciras

For fp1 I just took a very basic look into the plotting library in racket. Knowihg that this is a large library with may possible plots, I decided to look at a simple 2D plot and a fairly simple 3D plot.

For 2D plots, I first looked at a simple sin curve. The code looks as folows:

(require plot)
(define my2Dplot
 (plot (function sin (- pi) pi #:label "y = sin(x)")))

and returns the folowing output:

The function 'function' takes perameters:

• function to graph
• lower x bound
• upper x bound

After these it takes lables, allowing for the customization of each graph. I followed this up with a quatratic graph just to get a feel for writing equations again after using haskell

(define 2DFunTest
  (plot (function (λ (x) (+ (* x x 2) 1)) (- 10) 10 #:label "y = 2x^2 + 1")))

and got the following graph:

Finally, I did the 3D plot of a sphere just to see how much of the sphere would appear, as most graphing programs cut it off before it can close:

(define my3DPlot
  (plot3d (surface3d (λ (x y) (+ (* x x) (* y y))) (- pi) pi (- pi) pi)
                     #:title "Sphere"
                     #:x-label "x"
                     #:y-label "y"
                     #:z-label "x^2 + y^2"))

giving the result:

which cuts the sphere off at z = 20

The parameters for plot3D are:

• equation
• min x value
• max x value
• min y value
• max y value and then the labels ine hte same regard as the 2D plot.