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add family parameter for set the font-family for non-ascii labels and… #26

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add family parameter for set the font-family for non-ascii labels and… #26

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9 changes: 5 additions & 4 deletions R/ggbiplot.r
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,7 @@
#' @param varname.size size of the text for variable names
#' @param varname.adjust adjustment factor the placement of the variable names, >= 1 means farther from the arrow
#' @param varname.abbrev whether or not to abbreviate the variable names
#' @param family set the font-family for non-ascii labels and variable axes
#'
#' @return a ggplot2 plot
#' @export
Expand All @@ -52,7 +53,7 @@ ggbiplot <- function(pcobj, choices = 1:2, scale = 1, pc.biplot = TRUE,
var.axes = TRUE,
circle = FALSE, circle.prob = 0.69,
varname.size = 3, varname.adjust = 1.5,
varname.abbrev = FALSE, ...)
varname.abbrev = FALSE, family = "", ...)
{
library(ggplot2)
library(plyr)
Expand Down Expand Up @@ -169,9 +170,9 @@ ggbiplot <- function(pcobj, choices = 1:2, scale = 1, pc.biplot = TRUE,
if(!is.null(df.u$labels)) {
if(!is.null(df.u$groups)) {
g <- g + geom_text(aes(label = labels, color = groups),
size = labels.size)
size = labels.size, family = family)
} else {
g <- g + geom_text(aes(label = labels), size = labels.size)
g <- g + geom_text(aes(label = labels), size = labels.size, family = family)
}
} else {
if(!is.null(df.u$groups)) {
Expand Down Expand Up @@ -206,7 +207,7 @@ ggbiplot <- function(pcobj, choices = 1:2, scale = 1, pc.biplot = TRUE,
geom_text(data = df.v,
aes(label = varname, x = xvar, y = yvar,
angle = angle, hjust = hjust),
color = 'darkred', size = varname.size)
color = 'darkred', size = varname.size, family = family)
}
# Change the name of the legend for groups
# if(!is.null(groups)) {
Expand Down