Created
June 6, 2014 17:56
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Fix formatting problems when using facet_wrap
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facetAdjust <- function(x, pos = c("up", "down")) | |
{ | |
pos <- match.arg(pos) | |
p <- ggplot_build(x) | |
gtable <- ggplot_gtable(p); dev.off() | |
dims <- apply(p$panel$layout[2:3], 2, max) | |
nrow <- dims[1] | |
ncol <- dims[2] | |
panels <- sum(grepl("panel", names(gtable$grobs))) | |
space <- ncol * nrow | |
n <- space - panels | |
if(panels != space){ | |
idx <- (space - ncol - n + 1):(space - ncol) | |
gtable$grobs[paste0("axis_b",idx)] <- list(gtable$grobs[[paste0("axis_b",panels)]]) | |
if(pos == "down"){ | |
rows <- grep(paste0("axis_b\\-[", idx[1], "-", idx[n], "]"), | |
gtable$layout$name) | |
lastAxis <- grep(paste0("axis_b\\-", panels), gtable$layout$name) | |
gtable$layout[rows, c("t","b")] <- gtable$layout[lastAxis, c("t")] | |
} | |
} | |
class(gtable) <- c("facetAdjust", "gtable", "ggplot"); gtable | |
} | |
print.facetAdjust <- function(x, newpage = is.null(vp), vp = NULL) { | |
if(newpage) | |
grid.newpage() | |
if(is.null(vp)){ | |
grid.draw(x) | |
} else { | |
if (is.character(vp)) | |
seekViewport(vp) | |
else pushViewport(vp) | |
grid.draw(x) | |
upViewport() | |
} | |
invisible(x) | |
} |
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