[R] textplot() in gplots causes problems (0x9)

[Jonas Malmros]

Dear Gregory,

How can I avoid using tab character when all I want to do is to print
a model summary on my pdf device using textplot()?
How do I set the font size? If you mean using cex inside textplot,
then it does not work. Whether cex is 1 or 0.2 I get the same result,
exemplified here:

Call:
lm(formula =...)
Resuduals:
...

Coefficients  Estimate
(intercept)    1.32
...                ...
...                ...

                  Std.Error   t-value
(Intercept)    0.2           0.1
...                ...            ...
...                ...            ...

                  Pr(>|t|)
(intercept)     0.01
...                ...
...                ...

$B!]!]!](B
Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
Residual standard error: 1.748...


Is there no solution to this problem?
I am using Vista, R2.6.0 patched, RWinEdt.

textplot(capture.output(summary(.model)), valign="top", halign="left", cex=0.5)

Thanks in advance,
Jonas

On 11/1/07, Gregory Warnes <gregory.warnes at mac.com> wrote:
> Hi Jonas,
>
> By default, textplot() attempts to automatically select a font size
> that is 'just big enough, but not too big'.  It does this by a binary-
> search approach where it sets a font size, then asks R to compute the
> actual width of the text to be displayed (without actually displaying
> it), then increases or decreases the font size appropriately until it
> finds the largest font that doesn't extend beyond the plot region
> vertically or horizontally.  It appears that on your system, R
> doesn't know how wide a tab character is.   This isn't particularly
> surprising since tab characters vary in width depending on the context.
>
> There are two simple solutions.  First, avoid using characters R
> can't figure out sizes for (i.e. tab), or manually specify the font
> size so textplot() doesn't attempt to optimize it.
>
> I personally choose the former, avoid tab characters, since the
> appropriate font size varies greatly by device.
>
> -Greg
>
> On Oct 31, 2007, at 3:22PM , Jonas Malmros wrote:
>
> > Hello,
> >
> > I am using textplot function in gplots package to put some model
> > output inside a PDF file, but it does not seem to work properly with
> > PDF.
> >
> > I am doing follwing:
> > pdf(file="C:/...", paper="a4", width=8, height=12)
> > .model <- lm(.model.formula, data=database)
> > textplot(capture.output(summary(.model)), valign="top", halign="left")
> >
> > I  am getting these error messages:
> >
> > Warning messages:
> > 1: In FUN(c("C", "a", "l", "l", ":", "l", "m", "(", "f", "o", "r",  :
> >   font width unknown for character 0x9
> > 2: In strwidth(object, cex = cex) : font width unknown for
> > character 0x9
> > 3: In FUN(c("C", "a", "l", "l", ":", "l", "m", "(", "f", "o", "r",  :
> >   font width unknown for character 0x9
> > 4: In strwidth(object, cex = cex) : font width unknown for
> > character 0x9
> > 5: In FUN(c("C", "a", "l", "l", ":", "l", "m", "(", "f", "o", "r",  :
> >   font width unknown for character 0x9
> > 6: In strwidth(object, cex = cex) : font width unknown for
> > character 0x9
> > 7: In text.default(x = xpos, y = ypos, labels = object, adj = c(0,  :
> >   font width unknown for character 0x9
> > 8: In text.default(x = xpos, y = ypos, labels = object, adj = c(0,  :
> >   font width unknown for character 0x9
> >
> > This is a tab character that causes problems, I guess. Is there any
> > way to solve this?
> >
> > Thank you in advance
> >
> > --
> > Jonas Malmros
> > Stockholm University
> > Stockholm, Sweden
> >
> > ______________________________________________
> > R-help at r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide http://www.R-project.org/posting-
> > guide.html
> > and provide commented, minimal, self-contained, reproducible code.
>
>


-- 
Jonas Malmros
Stockholm University
Stockholm, Sweden