r-grid

I am adding ggplots to viewports . Both ggplot and viewport has the same background colour. My problem is that I have a white rectangle surrounding my ggplots and I dont seem to be able to find the option to remove it using theme . Any ideas? library(grid) library(ggplot2) Pie_chart <- ggplot(df , aes(x = "", y = prop_1, fill = rank) ) + geom_bar(stat="identity", width=2) + coord_polar("y", start = 0) + labs(x = NULL, y = NULL, fill = NULL, title = "") + theme(axis.line = element_blank(), axis.text = element_blank(), axis.ticks = element_blank(), legend.position="none")+ theme(plot.margin =

I am trying to create a document using knitr that includes ggplot2 plots modified using grid . In the example below, there should be 2 plots both using the diamonds dataset included in ggplot2 : the first one shows cut vs. color and the second shows cut vs. clarity. Instead, the later plot is repeated twice. The first plot is not generated in the figure directory at all. \documentclass{article} \begin{document} <<fig.cap = c('color', 'clarity')>>= library(ggplot2) library(grid) theme_update(plot.margin = unit(c(1.5, 2, 1, 1), 'lines')) # Create plot with color p = ggplot(diamonds,aes(cut,fill

I'd like to add colors to certain words in titles to my graphs. I've been able to find some precedent here . Specifically, I'd like the text that's wrapped in apostrophes (in the output, below) to correspond to the color of their respective bar charts. Here's how far I've gotten with titles in R before having to export a PDF to Adobe Illustrator or other program. name <- c("Peter", "Gabriel", "Rachel", "Bradley") age <- c(34, 13, 28, 0.9) fake_graph <- family[order(family$age, decreasing = F), ] fake_graph <- within(fake_graph, { bar_color = ifelse(fake_graph$name == "Rachel", "blue", "gray")

I'm struggling to build a dual-axis plot based on ggplot objects. At baptiste's suggestion, I have broken down the problem into smaller parts. The present issue is: how to remove all of the data from the grobs , while keeping the axis, the axis labels, the axis tickmarks, and the grid lines? By 'data' I mean the data associated with geom_line() and geom_points() . The reason for wanting to do this is that in the process of building a dual-axis plot, I ran into the following problem: the grid lines from one grob would overwrite the data from the other grob. By removing the data lines and points

Why are the lines (via linesGrob ) not drawn in the following plot? require(gtable) base <- gtable(widths=unit(rep(1, 2), "null"), heights=unit(rep(1, 3), "null")) grid.newpage() g <- 1 for(i in 1:3) { for(j in 1:2) { base <- gtable_add_grob(base, grobs=list(linesGrob(x=1:4, y=4:1), rectGrob(gp=gpar(fill="#FF0000")), textGrob(label=g)), i, j, name=1:3) g <- g+1 } } grid.draw(base) Two reasons: the coordinates fall outside the viewport the rectGrob is drawn on top and masks it require(gtable) # let's fix this name before it's too late gtable_add_grobs <- gtable_add_grob base <- gtable(widths

With the following code I can remove top and right borders along with other things. I wonder how to remove the right border of the ggplot2 graph only. p <- ggplot(mtcars, aes(x = wt, y = mpg)) + geom_point() p + theme_classic() the theme system gets in the way, but with a little twist you can hack the theme elements, library(ggplot2) library(grid) element_grob.element_custom <- function(element, ...) { segmentsGrob(c(1,0,0), c(0,0,1), c(0,0,1), c(0,1,1), gp=gpar(lwd=2)) } ## silly wrapper to fool ggplot2 border_custom <- function(...){ structure( list(...), # this ... information is not used,