r - How can I make the legend in ggplot2 the same height as my plot? -


i have generated simple plot in r (version r version 3.0.1 (2013-05-16)) using ggplot2 (version 0.9.3.1) shows correlation coefficients set of data. currently, legend colorbar on right side of plot fraction of entire plot size.

i legend colorbar same height plot. thought use legend.key.height this, have found not case. investigated grid package unit function , found there normalized units in there when tried them (unit(1, "npc")), colorbar way tall , went off page.

how can make legend same height plot itself?

a full self contained example below:

# load needed libraries library(ggplot2) library(grid) library(scales) library(reshape2)  # generate collection of sample data variables = c("var1", "var2", "var3") data = matrix(runif(9, -1, 1), 3, 3) diag(data) = 1 colnames(data) = variables rownames(data) = variables  # generate plot corrs = data ggplot(melt(corrs), aes(x = var1, y = var2, fill = value)) +   geom_tile() +   geom_text(parse = true, aes(label = sprintf("%.2f", value)), size = 3, color = "white") +   theme_bw() +   theme(panel.border = element_blank(),         axis.text.x = element_text(angle = 90, vjust = 0.5, hjust = 1),         aspect.ratio = 1,         legend.position = "right",         legend.key.height = unit(1, "inch")) +         labs(x = "", y = "", fill = "", title = "correlation coefficients") +         scale_fill_gradient2(limits = c(-1, 1), expand = c(0, 0),                              low = muted("red"),                              mid = "black",                              high = muted("blue"))

enter image description here

it seems quite tricky, closest got this,

## panel height 1null, work out subtracting other heights 1npc ## , 1line default plot margins  panel_height = unit(1,"npc") - sum(ggplotgrob(plot)[["heights"]][-3]) - unit(1,"line") plot + guides(fill= guide_colorbar(barheight=panel_height))

unfortunately vertical justification bit off.


Comments

Post a Comment

Popular posts from this blog

java.util.scanner - How to read and add only numbers to array from a text file -

i'm learning java , have question regarding reading file want read numbers file contains strings well. here example of file: 66.56 "3 java 3-43 5-42 2.1 1 and here coding: public class test { public static void main (string [] args){ if (0 < args.length) { file x = new file(args[0]); try{ scanner in = new scanner( new fileinputstream(x)); arraylist<double> test = new arraylist<>(); while(in.hasnext()){ if(in.hasnextdouble()){ double f=in.nextdouble(); test.add(f);} else {in.next();} } catch(ioexception e) { system.err.println("exception during reading: " + e); } } my problem add 66.56,2.1 , 1 doesn't add 3 after "3 or ignores 3-43 , 5-42 can tell me how skip strings , add doubles here? thanks all said 3 ie; "3, 3-43 , 4-42 strings either u read string , split , check number @ " , - or put in space between characters , integers. jvm after compilation tre...
Read more

rewrite - Trouble with Wordpress multiple custom querystrings -

i'm working on adding multiple querystring , doesn't seem work. i've found codes seems work others might i'm missing something. i want like: http://mydomain.com/board/?getyear=2013&getsometext2=sometext to http://mydomain.com/board/2013/sometext/ i added code below functions.php file. doesn't seem work should though. this works. echoing querystring gets both variable without problem. http://mydomain.com/board/2013/sometext/ but doesn't. tested querystring vis isset() seems nothing being set/get http://mydomain.com/board/2013/ function add_query_vars($vars) { $vars[] = "getyear"; $vars[] = "getsometext2"; return $vars; } add_filter('query_vars', 'add_query_vars'); function add_rewrite_rules($arules) { $anewrules = array('board/([^/]+)/([^/]+)/?$' => 'index.php?pagename=board&getyear=$matches[1]&getsometext2=$matches[2]'); $arules = $a...
Read more