I can't replicate this problem on my machine, so I'll need more
information. Can you run the following program and reply with what you see?
#lang racket
(require racket/draw plot)
(plot (function sin #e1e-157 #e1e-156))
(define bm (make-bitmap 400 400))
(define dc (make-object bitmap-dc% bm))
(send dc set-smoothing 'smoothed)
(send dc set-scale 2 2)
(send dc set-font (make-font #:size (plot-font-size)
#:family (plot-font-family)
#:size-in-pixels? #t))
(send dc get-text-extent "X (⇑∘C)" #f #t 0)
(send dc draw-text "X (⇑∘C)" 80 180 #t 0 0)
(send dc get-text-extent "Y (∘C)" #f #t 0)
(send dc draw-text "Y (∘C)" 10 120 #t 0 (/ pi 2))
(send dc draw-ellipse 30 30 140 140)
bm
It should produce a simple plot with tick labels on both axes with the
superscripted exponent "-157", a collection of numbers that looks
something like this:
110.0
13.5
3.0
0.0
34.0
13.5
3.0
0.0
and a bitmap with a circle and the X and Y axis labels you expect, with
approximately the placement and orientation you expect them on a plot
(though bigger).
Neil ⊥
On 04/25/2014 03:39 PM, Deren Dohoda wrote:
Short story: put a \circ in the y-label and plotting fails?
Racket 6.0 32-bit on 64-bit Windows 7. Using DrRacket. The plot frame is
generated, the plot title and x-label appear, the tick marks on the axes
appear, but the y-label doesn't appear and neither (points ...) nor
(function ...) appear.
Example code (hopefully the extra characters come through email correctly):
#lang racket
(require plot)
(define (make-p title y-label)
(plot (function (λ(x) x))
#:x-min 0 #:x-max 50
#:y-min 0 #:y-max 50
#:x-label "X (⇑∘C)"
#:y-label y-label
#:title title))
(define-values (works doesnt-work)
(values (make-p "Works (⇓∘C)" "Y (C)")
(make-p "Doesn't Work (⇓∘C)" "Y (∘C)")))
works
doesnt-work
;;;;;;;;;;;;;;;;;;;;;
It's not just arbitrary character substitutions, for instance all the
\left|right|up|downarrow don't cause any problems, but
\Down|Up|etc.arrow causes the same problem as \circ. I threw some in the
title and x-label to show that they didn't cause any failures. I've
attached an image of what appears in case it helps.
Deren
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