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# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Library General Public License for more details.
#
# You should have received A copy of the GNU Library General
# Public License along with this library; if not, write to the
# Free Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
################################################################################
# FUNCTION: DESCRIPTION:
# characterTable Shows a table of character codes
################################################################################
characterTable <-
function(font = 1, cex = 0.7)
{
# A function implemented by Diethelm Wuertz
# Description:
# Prints numeric equivalents to all latin characters.
##
## 2023-10-07 GNB: Actually the function had been showing the characters
## having codes below 256 in the current locale and working properly
## only for some of them. Today's explicitly sets latin1.
##
## TODO: This function could be safely removed, I think.
# Notes:
# The printed version doesn't allways corresponds to the
# screen display. The character on line "xy" and column
# "z" of the table has code "xyz". These codes can be
# used as any other characters.
# e.g. title("\347\340 et \340")
# Note on S:
# As the command line window of Splus can't print special
# characters
# cat("\347\340 et \340")
# will not print the special characters, at least under
# 4.5 and under 2000.
# Author:
# Source from Pierre Joyet, pierre.joyet@bluewin.ch
# Example:
# for (i in 1:20) characterTable(font = i)
# FUNCTION:
# Table:
v = 40:377
v = v[v %% 100 < 80 & v %% 10 < 8]
par(mar = c(5, 5, 4, 2) + 0.1)
plot(-1:7, seq(4, 33, length = 9), type = "n", axes = FALSE,
xlab = "", ylab = "", cex = cex, main = "Table of Characters")
k = 1
for(i in 4:31)
for(j in 0:7) {
## 2023-10-07 GNB: include encoding in the string to fix error on
## CRAN, see Hornik's report around this date. Note that the
## function had never worked properly in UTF8 locales but no
## errors were raised before.
ch <- eval(parse(text = paste("\"\\", v[k], "\"", sep = "")))
Encoding(ch) <- "latin1"
text(j, 35 - i, ch, font = font, cex = cex)
k = k + 1
}
text(0:7, rep(33, 7), as.character(0:7), font = 3, cex = cex)
text(rep(-1, 28), 31:4, as.character(c(4:7, 10:17, 20:27,
30:37)), font = 3, cex = cex)
# Return Value:
invisible(font)
}
################################################################################
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