On Jan 29, 2:09 am, lutusp <lut...@gmail.com> wrote:
> > Give some examples, please.
>
> var("y R")
>
> a(y,R) = pi * (2*R - y) * y
>
> lbl = text("$\int \ " + latex(a(y,R)) + "$",(3,20))
>
> view(lbl)
> ... Graphics object consisting of 1 graphics primitive (not
> displayed)
> show(lbl)
> ... Unknown control sequence '\texttt'
When I evaluate "lbl", I don't get a picture; something is broken in
the "text" command. Because there is no picture, "show" defaults to
trying to print a text description, leading to this message. The
patch fixes it so the text description prints correctly. I don't know
why "text" is broken, but I bet someone can help.
By the way, if I run
var("y R")
a(y,R) = pi * (2*R - y) * y
lbl = text("$\int \ " + r"{\left(2 R - y\right)} \pi y" + "$",
(3,20))
then executing "lbl" or "show(lbl)" produce a picture. If I change
the last line to
lbl = text("$\int \ " + r"{\left(2 \, R - y\right)} \pi y" + "$",
(3,20)) # insert \, between 2 and R
I get an error.
> No graphics shown.
>
> > By the way, have you tried the patch I mentioned in my other message today?
>
> I initially dealt with Sage problems that way, but the patches keep
> changing with each new version while the problem remains unsolved. I
> eventually concluded it was simpler not to upgrade. The present
> problem is less severe in earlier versions.
Then why do you bother posting things that look like requests for
help?
--
John
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