>>>>> "Joerg" == Joerg van den Hoff <[EMAIL PROTECTED]>
>>>>> on Thu, 29 Jun 2006 14:29:26 +0200 writes:
Joerg> I raised this question quite some time ago but it quitly went down
the
Joerg> river. I'll give it a second try (before keeping my modified version
of
Joerg> matplot for ever...):
Joerg> matplot supports vectors (and/or character strings) for a number of
Joerg> arguments namely `type', `lty', `lwd', `pch', `col', `cex'. all of
them
Joerg> act consistently in such a way that the first entries are used for
plot
Joerg> of x-column 1 vs. y-column 1 and so forth.
Joerg> for some reason `bg' is missing from this list (maybe simplyh
Joerg> forgotten?).
It maybe that matplot() predates the "color fillable"
symbols, or then the author of R's version of matplot just forgot...
Joerg> forgotten?). this causes an, according to my mind, at least,
undesirable
Joerg> (inconsistent) behaviour in calls like
Joerg> matplot(x, y, type = 'b', pch = 21:23, col = 2:4, bg = 2:4)
Joerg> (assuming x, y are 3-column matrices)
Joerg> `col', `pch' and the other explicit arguments are interpreted on a
'per
Joerg> plot' basis whereas `bg' is transferred to plot.default and is
therefore
Joerg> interpreted on a 'per point' basis. thus, `col' above sets the
colors of
Joerg> the plotting symbols in the different line plots (say, column 1 to
3)
Joerg> whereas `bg' sets the colors alternating down each column of the
data,
Joerg> i.e. within each line plot.
Joerg> question: would'nt it be desirable and more consistent/intuitive if
`bg'
Joerg> where treated on the same footing as the other explicit parameters,
Joerg> especially if combinations of `pch>=21' and `bg' are envisaged?
Joerg> necessary changes to matplot are trivial:
Hmm: Your patch is *not* against matplot.R from the R sources,
hence is not directly applicable at all.
Also, it does need patches for the help file.
But, the R-devel (aka 2.4.0-to-be) will have the desired feature
as from tomorrow.
Thank you for the suggestion,
Martin Maechler, ETH Zurich
Joerg> 3c3
Joerg> < ..., add = FALSE, verbose = getOption("verbose"))
Joerg> ---
>> bg = NULL, ..., add = FALSE, verbose = getOption("verbose"))
Joerg> 75a76,77
>> if (length(bg) < k)
>> bg <- rep(bg, length.out = k)
Joerg> 81c83,84
Joerg> < pch = pch[1], col = col[1], cex = cex[1], ...)
Joerg> ---
>> pch = pch[1], col = col[1], cex = cex[1], bg = bg[1],
>> ...)
Joerg> 85c88
Joerg> < pch = pch[i], col = col[i], cex = cex[i])
Joerg> ---
>> pch = pch[i], col = col[i], cex = cex[i], bg = bg[i])
Joerg> ______________________________________________
Joerg> R-devel@r-project.org mailing list
Joerg> https://stat.ethz.ch/mailman/listinfo/r-devel
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