94 lines
2.2 KiB
R
94 lines
2.2 KiB
R
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#
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# R misc grid plotting
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#
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require(grid)
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require(gridExtra)
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#
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# get line height
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#
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grd.lineheight <- function(s="X") {
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convertHeight(unit(1,"strheight", s), "native", valueOnly=T)
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}
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#
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# quantile table
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#
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grd.qtab <- function(df, what, cols, n=5) {
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df <- df[order(df[,what], decreasing=T),cols]
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sep <- head(df,1)
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sep[] <- "-"
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rbind(head(df, n), sep, tail(df, n))
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}
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#
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# histogram with tables
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#
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grd.hist <- function(df, what, cols = c(1,2, which(colnames(df) == what)),
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breaks=50, pos.sum=c(0.2,0.6), pos.quant=c(0.7,0.6), cex=0.7,
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main=paste0("Histogram of ", what), ...) {
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hist(df[,what], breaks=breaks, xlab=what, main=main, ...)
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if (! is.null(pos.sum)) {
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pushViewport(viewport(pos.sum[1], pos.sum[2], gp=gpar(cex=cex)))
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grid.table(x<-summary(df[,what]), rows=names(x))
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popViewport()
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}
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if (! is.null(pos.quant)) {
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pushViewport(viewport(pos.quant[1], pos.quant[2], gp=gpar(cex=cex)))
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grid.table(grd.qtab(df, what, cols), rows=NULL)
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popViewport()
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}
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invisible()
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}
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#
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# plot with fit
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#
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grd.fplot <- function(df, what.x, what.y, linfit=T, pos=c(0.2, 0.8), ablin=NULL, ...) {
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plot(df[,what.x], df[,what.y], xlab=what.x, ylab=what.y, ...)
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if (linfit) {
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fit <- lm(df[,what.y] ~ df[,what.x])
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abline(fit, col=2)
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pushViewport(viewport(gp=gpar(col=2)))
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a <- sprintf("%.2e", coef(fit)[2])
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b <- sprintf("%.2e", coef(fit)[1])
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grid.text(paste0(what.y, " = ", a, " * ", what.x, " + ", b),
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pos[1], pos[2], just="left")
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pos[2] = pos[2] - 2 * grd.lineheight()
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grid.text(paste0("R2=", round(summary(fit)$r.squared, 3)),
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pos[1], pos[2], just="left")
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popViewport()
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}
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if (! is.null(ablin))
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do.call(abline, ablin)
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invisible()
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}
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#
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# write text
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#
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grd.textpage <- function(..., lineno=0, left=0.1, top=0.9, cex=1, fact=1.4) {
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txt <- do.call(paste0, list(...))
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pushViewport(viewport(gp=gpar(cex=cex)))
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grid.text(txt, left, top-lineno*grd.lineheight()*fact, just="left")
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popViewport()
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invisible(txt)
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}
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#
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# title page
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#
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grd.titlepage <- function(title, x=0.5, y=0.7, cex=3, ...) {
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notify("processing", title)
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grid.newpage()
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grid.text(title, x, y, gp=gpar(cex=cex), ...)
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invisible()
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}
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