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author | Bryan Newbold <bnewbold@robocracy.org> | 2017-02-20 00:05:25 -0800 |
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committer | Bryan Newbold <bnewbold@robocracy.org> | 2017-02-20 00:05:25 -0800 |
commit | 8ffbc2df0fde83082610149d24e594c1cd879f4a (patch) | |
tree | a2be9aad5101c5e450ad141d15c514bc9c2a2963 /plottest.scm | |
download | slib-8ffbc2df0fde83082610149d24e594c1cd879f4a.tar.gz slib-8ffbc2df0fde83082610149d24e594c1cd879f4a.zip |
Import Upstream version 2a6upstream/2a6
Diffstat (limited to 'plottest.scm')
-rw-r--r-- | plottest.scm | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/plottest.scm b/plottest.scm new file mode 100644 index 0000000..20734f4 --- /dev/null +++ b/plottest.scm @@ -0,0 +1,47 @@ +;"plottest.scm" test charplot.scm +;Copyright (C) 1992 Aubrey Jaffer +; +;Permission to copy this software, to redistribute it, and to use it +;for any purpose is granted, subject to the following restrictions and +;understandings. +; +;1. Any copy made of this software must include this copyright notice +;in full. +; +;2. I have made no warrantee or representation that the operation of +;this software will be error-free, and I am under no obligation to +;provide any services, by way of maintenance, update, or otherwise. +; +;3. In conjunction with products arising from the use of this +;material, there shall be no use of my name in any advertising, +;promotional, or sales literature without prior written consent in +;each case. + +(require 'charplot) +(require 'random) + +(define strophoid + (let ((l '())) + (do ((x -1.0 (+ x 0.05))) + ((> x 4.0)) + (let* ((a (/ (- 2 x) (+ 2 x)))) + (if (>= a 0.0) + (let* ((y (* x (sqrt a)))) + (set! l (cons (cons x y) l)) + (set! l (cons (cons x (- y)) l)))))) + l)) + +(plot! strophoid "x" "y") (newline) + +(define unif + (let* ((l 6) + (v (make-vector l))) + (do ((i (- l 1) (- i 1))) + ((negative? i)) + (vector-set! v i (cons i 0))) + (do ((i 24 (- i 1)) + (r (random l) (random l))) + ((zero? i) (vector->list v)) + (set-cdr! (vector-ref v r) (+ 1 (cdr (vector-ref v r))))))) + +(plot! unif "n" "occur") |