r-grid

I am using a package ( treemap ) that uses grid package to produce a treemap. However, I would like to plot several of these treemaps together, to add different color schemes to these plots. tmPlot function uses grid.newpage function, which clears the graphics window. I have not found a way to save grid.newpage objects as you can do for ggplot2 objects. Is there a way to plot several grid.newpage objects to a same window? ## Example library(treemap) # load Gross national income data data(GNI2010) size <- aggregate(GNI ~ continent, GNI2010, sum) size <- size[with(size, order(GNI, decreasing = T

I want to independently move two legends on a map to save save and make the presentation nicer. Here is the data: ## INST..SUB.TYPE.DESCRIPTION Enrollment lat lng ## 1 CHARTER SCHOOL 274 42.66439 -73.76993 ## 2 PUBLIC SCHOOL CENTRAL 525 42.62502 -74.13756 ## 3 PUBLIC SCHOOL CENTRAL HIGH SCHOOL NA 40.67473 -73.69987 ## 4 PUBLIC SCHOOL CITY 328 42.68278 -73.80083 ## 5 PUBLIC SCHOOL CITY CENTRAL 288 42.15746 -78.74158 ## 6 PUBLIC SCHOOL COMMON NA 43.73225 -74.73682 ## 7 PUBLIC SCHOOL INDEPENDENT CENTRAL 284 42.60522 -73.87008 ## 8 PUBLIC SCHOOL INDEPENDENT UNION FREE 337 42.74593 -73.69018 ## 9

I am using facet_wrap and was also able to plot the secondary y-axis. However the labels are not getting plotted near the axis, rather they are plotted very far. I realise it all will get resolved if I understand how to manipulate the coordinate system of the gtable (t,b,l,r) of the grobs. Could someone explain how and what they actually depict - t:r = c(4,8,4,4) means what. There are many links for secondary yaxis with ggplot, however when nrow/ncol is more than 1, they fails. So please teach me the basics of grid geometry and grobs location management. Edit : the Code this is the final code

I would like to annotate my plots with a filename. With plot() I used mtext : plot(1:10) mtext("File xy-12-34-56.csv", 4) How can I do that with ggplot2 and qplot or ggplot? It should not collide with the legend. I found the commands annotate and grid , but I could not get an annotation similar to mtext with these. As a workaround I could try watermarks , but perhaps you have a good hint for me. Kind regards, Jonas Update Looks like to achieve the result now we should use the following: library(ggplot2) library(grid) library(gridExtra) p <- qplot(data = mtcars, wt, mpg) grid.arrange(p, right =

I have some table grobs, some long and some short. I'd like to draw these at the top/center of the page (with a small margin). From this answer , I got a helpful starting point, but the positioning is dependent on each grob's height. library(gridExtra) # fake data my_df <- data.frame(col1=rep('hello', 35), col2=round(rnorm(35), 3)) # list of grobs tg <- list(tableGrob(my_df[1:30, ]), tableGrob(my_df[31:35, ])) # this positions grobs at center top, but varies based on rows in table tg[[1]]$vp <- viewport(x = 0.5, y = unit(1,"npc") - 0.52 * grobHeight(tg[[1]])) tg[[2]]$vp <- viewport(x = 0.5, y