Anonymous user
Sparkline in unicode: Difference between revisions
→{{header|Racket}}
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Line 85:
min: 0.500000; max: 7.500000
▂▁▄▃▆▅█▇</pre>
=={{header|racket}}==
<lang racket>
#lang racket (require syntax/parse)
(define bars "▁▂▃▄▅▆▇█")
(define bar-count (string-length bars))
(define (sparks str)
(define ns (map string->number (string-split str #rx"[ ,]" #:repeat? #t)))
(define mn (apply min ns))
(define bar-width (/ (- (apply max ns) mn) (- bar-count 1)))
(apply string (for/list ([n ns]) (string-ref bars (exact-floor (/ (- n mn) bar-width))))))
(sparks "1 2 3 4 5 6 7 8 7 6 5 4 3 2 1")
(sparks "1.5, 0.5 3.5, 2.5 5.5, 4.5 7.5, 6.5")
</lang>
Output:
<lang racket>
"▁▂▃▄▅▆▇█▇▆▅▄▃▂▁"
"▂▁▄▃▆▅█▇"
</lang>
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