1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
|
#lang racket/base
;; A compatibility module for the old 'plot'.
(require racket/contract racket/class racket/snip racket/draw racket/vector
;; Plotting
plot/private/common/math
plot/private/common/contract
plot/private/common/ticks
plot/private/plot2d/plot-area
plot/private/plot2d/renderer
plot/private/plot3d/plot-area
plot/private/plot3d/renderer
(prefix-in new. (only-in plot
x-axis y-axis
plot-x-ticks plot-y-ticks plot-z-ticks
points error-bars vector-field
plot-title plot-x-label plot-y-label plot-z-label
plot-foreground plot-background
plot3d-angle plot3d-altitude))
plot/private/deprecated/renderers
;; Miscellaneous
plot/private/deprecated/math)
(provide
mix
(contract-out
[plot-color? (-> any/c boolean?)]
[plot
(->* [((is-a?/c 2d-plot-area%) . -> . void?)]
[#:width real?
#:height real?
#:x-min real?
#:x-max real?
#:y-min real?
#:y-max real?
#:x-label string?
#:y-label string?
#:title string?
#:fgcolor (list/c byte? byte? byte?)
#:bgcolor (list/c byte? byte? byte?)
#:lncolor (list/c byte? byte? byte?)
#:out-file (or/c path-string? output-port? #f)]
(is-a?/c image-snip%))]
[plot3d
(->* [((is-a?/c 3d-plot-area%) . -> . void?)]
[#:width real?
#:height real?
#:x-min real?
#:x-max real?
#:y-min real?
#:y-max real?
#:z-min real?
#:z-max real?
#:alt real?
#:az real?
#:x-label string?
#:y-label string?
#:z-label string?
#:title string?
#:fgcolor (list/c byte? byte? byte?)
#:bgcolor (list/c byte? byte? byte?)
#:lncolor (list/c byte? byte? byte?)
#:out-file (or/c path-string? output-port? #f)]
(is-a?/c image-snip%))]
[points
(->* [(listof (vectorof real?))]
[#:sym (or/c char? string? exact-integer? symbol?)
#:color plot-color?]
((is-a?/c 2d-plot-area%) . -> . void?))]
[vector-field
(->* [((vector/c real? real?) . -> . (vector/c real? real?))]
[#:samples (and/c exact-integer? (>=/c 2))
#:width exact-positive-integer?
#:color plot-color?
#:style (one-of/c 'scaled 'normalized 'real)]
((is-a?/c 2d-plot-area%) . -> . void?))]
[error-bars
(->* [(listof (vector/c real? real? real?))]
[#:color plot-color?]
((is-a?/c 2d-plot-area%) . -> . void?))]
[line
(->* [(real? . -> . (or/c real? (vector/c real? real?)))]
[#:samples (and/c exact-integer? (>=/c 2))
#:width (>=/c 0)
#:color plot-color/c
#:mode (one-of/c 'standard 'parametric)
#:mapping (one-of/c 'cartesian 'polar)
#:t-min real?
#:t-max real?]
((is-a?/c 2d-plot-area%) . -> . void?))]
[contour
(->* [(real? real? . -> . real?)]
[#:samples exact-nonnegative-integer?
#:width (>=/c 0)
#:color plot-color/c
#:levels (or/c (and/c exact-integer? (>=/c 2)) (listof real?))]
((is-a?/c 2d-plot-area%) . -> . void?))]
[shade
(->* [(real? real? . -> . real?)]
[#:samples (and/c exact-integer? (>=/c 2))
#:levels (or/c (and/c exact-integer? (>=/c 2)) (listof real?))]
((is-a?/c 2d-plot-area%) . -> . void?))]
[surface
(->* [(real? real? . -> . real?)]
[#:samples (and/c exact-integer? (>=/c 2))
#:width (>=/c 0)
#:color plot-color/c]
((is-a?/c 3d-plot-area%) . -> . void?))]
)
;; Miscellaneous
make-vec
derivative
gradient)
(define (mix . data)
(for/fold ([f (λ (area) (void))]) ([d (in-list data)])
(λ (area)
(f area)
(d area)
(void))))
(define (plot-color? v)
(and (member v '(white black yellow green aqua pink wheat gray brown blue violet cyan
turquoise magenta salmon red))
#t))
(define ((renderer2d->plot-data r) area)
((renderer2d-render-proc r) area)
(void))
(define ((renderer3d->plot-data r) area)
((renderer3d-render-proc r) area)
(void))
;; ===================================================================================================
;; Plotting
(define x-axis-data (renderer2d->plot-data (new.x-axis)))
(define y-axis-data (renderer2d->plot-data (new.y-axis)))
(define (plot data
#:width [width 400]
#:height [height 400]
#:x-min [x-min -5]
#:x-max [x-max 5]
#:y-min [y-min -5]
#:y-max [y-max 5]
#:x-label [x-label "X axis"]
#:y-label [y-label "Y axis"]
#:title [title ""]
#:fgcolor [fgcolor '(0 0 0)]
#:bgcolor [bgcolor '(255 255 255)]
#:lncolor [lncolor '(255 0 0)]
#:out-file [out-file #f])
(define x-ticks (ticks-generate (new.plot-x-ticks) x-min x-max))
(define y-ticks (ticks-generate (new.plot-y-ticks) y-min y-max))
(define bounds-rect (vector (ivl x-min x-max) (ivl y-min y-max)))
(parameterize ([new.plot-title title]
[new.plot-x-label x-label]
[new.plot-y-label y-label]
[new.plot-foreground fgcolor]
[new.plot-background bgcolor])
(define bm (make-bitmap (ceiling width) (ceiling height)))
(define dc (make-object bitmap-dc% bm))
(define area (make-object 2d-plot-area%
bounds-rect x-ticks x-ticks y-ticks y-ticks dc 0 0 width height))
(define data+axes (mix x-axis-data y-axis-data data))
(send area start-plot)
(send area start-renderer bounds-rect)
(data+axes area)
(send area end-renderers)
(send area end-plot)
(when out-file (send bm save-file out-file 'png))
(make-object image-snip% bm)))
(define (plot3d data
#:width [width 400]
#:height [height 400]
#:x-min [x-min -5]
#:x-max [x-max 5]
#:y-min [y-min -5]
#:y-max [y-max 5]
#:z-min [z-min -5]
#:z-max [z-max 5]
#:alt [alt 30]
#:az [az 45]
#:x-label [x-label "X axis"]
#:y-label [y-label "Y axis"]
#:z-label [z-label "Z axis"]
#:title [title ""]
#:fgcolor [fgcolor '(0 0 0)]
#:bgcolor [bgcolor '(255 255 255)]
#:lncolor [lncolor '(255 0 0)]
#:out-file [out-file #f])
(define x-ticks (ticks-generate (new.plot-x-ticks) x-min x-max))
(define y-ticks (ticks-generate (new.plot-y-ticks) y-min y-max))
(define z-ticks (ticks-generate (new.plot-z-ticks) z-min z-max))
(define bounds-rect (vector (ivl x-min x-max) (ivl y-min y-max) (ivl z-min z-max)))
(parameterize ([new.plot-title title]
[new.plot-x-label x-label]
[new.plot-y-label y-label]
[new.plot-z-label z-label]
[new.plot-foreground fgcolor]
[new.plot-background bgcolor]
[new.plot3d-angle az]
[new.plot3d-altitude alt])
(define bm (make-bitmap (ceiling width) (ceiling height)))
(define dc (make-object bitmap-dc% bm))
(define area (make-object 3d-plot-area%
bounds-rect x-ticks x-ticks y-ticks y-ticks z-ticks z-ticks dc 0 0 width height))
(send area start-plot)
(send area start-renderer bounds-rect)
(data area)
(send area end-renderers)
(send area end-plot)
(when out-file (send bm save-file out-file 'png))
(make-object image-snip% bm)))
;; ===================================================================================================
;; Functions that generate "plot data"
(define (points vecs #:sym [sym 'square] #:color [color 'black])
(renderer2d->plot-data (new.points (map (λ (v) (vector-take v 2)) vecs)
#:sym sym #:size 6 #:color color)))
(define (vector-field f
#:samples [samples 20]
#:width [width 1]
#:color [color 'red]
#:style [style 'scaled])
(define scale (case style
[(scaled) 'auto]
[(normalized) 'normalized]
[(real) 1.0]))
(renderer2d->plot-data
(new.vector-field f #:samples samples #:line-width width #:color color #:scale scale)))
(define (error-bars vecs #:color [color 'black])
(renderer2d->plot-data (new.error-bars vecs #:color color #:alpha 1 #:width 4)))
(define (line f
#:samples [samples 150]
#:width [width 1]
#:color [color 'red]
#:mode [mode 'standard]
#:mapping [mapping 'cartesian]
#:t-min [t-min -5]
#:t-max [t-max 5])
(renderer2d->plot-data (line-renderer f samples width color mode mapping t-min t-max)))
(define (contour f
#:samples [samples 50]
#:width [width 1]
#:color [color 'black]
#:levels [levels 10])
(renderer2d->plot-data (contour-renderer f samples width color levels)))
(define (shade f #:samples [samples 50] #:levels [levels 10])
(renderer2d->plot-data (shade-renderer f samples levels)))
(define (surface f #:samples [samples 50] #:width [width 1] #:color [color 'black])
(renderer3d->plot-data (surface-renderer f samples width color)))
|
