(Moved from r-help)
On 3/13/2006 9:33 AM, Dietrich Trenkler wrote:
> I have some data which I would like to display with dotchart. The
> labels are very long, so the chart becomes too small. Setting cex=0.7
> seems to be a good compromise, but the gap between the text and the
> chart still is too large. I did not find a "gap" parameter in the
> description of dotchart...
>
> Thanks for any help.
>
> D. Trenkler
>
>
> "a" <- structure(c(103.35, 36.73, 55.09, 302.66, 68.54, 35.46,
> 138.65, 25.21, 110.85, 6.66, 46.57, 70.23), .Names =
> c("Nahrungsmittel und alkoholfreie Getraenke",
> "Alkoholische Getraenke, Tabakwaren", "Bekleidung und Schuhe",
> "Wohnungsmieten, Energie", "Einrichtungsgegenstaende",
> "Gesundheitspflege",
> "Verkehr", "Nachrichtenuebermittlung", "Freizeit, Unterhaltung und
> Kultur",
> "Bildungswesen", "Beherbergungs und Gaststaettendienstleistungen",
> "Andere Waren und Dienstleistungen"))
>
> dotchart(sort(a))
> dotchart(sort(a),cex=0.7)
I've determined that this is a bug in dotchart. It miscalculates the
height of a line of text in the right margin, using
lheight <- strheight("M", "inch")
which doesn't give the right answer. You get the correct answer in this
case by putting
lheight <- par("mai")[2]/par("mar")[2]
but that's not a general solution, as the denominator may be zero.
I'll look for a better solution.
Duncan Murdoch
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