[racket] Plot silently fails for some characters in y-label

Neil,

Thanks for the help, the report is submitted.

Deren


On Fri, Apr 25, 2014 at 9:12 PM, Neil Toronto <neil.toronto at gmail.com>wrote:

> Can you submit a bug report from DrRacket? (Use "Submit Bug Report..." in
> the Help menu.) That way, we'll have your system information automatically
> attached to the PR in the bug database. Make the title something like
> "Drawing rotated unicode text breaks device contexts on Windows 7."
>
> Thanks for being patient. I'm sure Matthew will push a fix very soon. ;)
>
> Neil ⊥
>
>
> On 04/25/2014 06:48 PM, Deren Dohoda wrote:
>
>> Hi Neil,
>>
>> I have the 32-bit version installed on my Win7 machine at home, too. I
>> was able to reproduce my own problem here as well.
>>
>> When I run your example, the first plot looks like I'd expect. The
>> second one does not have the circle. If I remove the \circ from the
>> text-extent it doesn't change anything. If I remove \circ from the
>> text-extent and the draw-text, then the circle appears. If I remove
>> \circ from only draw-text (leaving it in text-extent), the circle also
>> appears. I did take a screenshot if you want to see it. Otherwise, the
>> numbers are
>>
>> 39.0
>> 13.5
>> 2.5
>> 0.0
>> 31.0
>> 13.5
>> 2.5
>> 0.0
>>
>> I then uninstalled the 32-bit version, downloaded and installed the
>> x86_64 version, and reran your example. The same thing happened again.
>>
>> Something maybe helpful: when the \circ is in the string for draw-text
>> the text is NOT rotated 90 degrees counter-clockwise. When the \circ is
>> removed, the text is drawn rotated 90 degrees counter-clockwise.
>>
>> ...Ah, I see Kieron has uploaded an image to show. That is exactly what
>> I see.
>>
>> Deren
>>
>>
>> On Fri, Apr 25, 2014 at 6:39 PM, Neil Toronto <neil.toronto at gmail.com
>> <mailto:neil.toronto at gmail.com>> wrote:
>>
>>     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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>>
>>
>
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