Questions tagged [ggplot2]
ggplot2 is an actively maintained open-source chart-drawing package for R, written by Hadley Wickham, based upon the principles of "Grammar of Graphics". It partially replaces R's basic plot and the lattice package, while providing a clean, powerful, orthogonal and fun API.
ggplot2
56,816
questions
912
votes
8
answers
1.6m
views
Rotating and spacing axis labels in ggplot2
I have a plot where the x-axis is a factor whose labels are long. While probably not an ideal visualization, for now I'd like to simply rotate these labels to be vertical. I've figured this part out ...
- 43.2k
768
votes
7
answers
93k
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How can we make xkcd style graphs?
Apparently, folk have figured out how to make xkcd style graphs in Mathematica and in LaTeX. Can we do it in R? Ggplot2-ers? A geom_xkcd and/or theme_xkcd?
I guess in base graphics, par(xkcd=TRUE)? ...
- 9,222
690
votes
17
answers
1.9m
views
Plot two graphs in a same plot
I would like to plot y1 and y2 in the same plot.
x <- seq(-2, 2, 0.05)
y1 <- pnorm(x)
y2 <- pnorm(x, 1, 1)
plot(x, y1, type = "l", col = "red")
plot(x, y2, type = "l", col = "green")
But ...
- 25.7k
532
votes
14
answers
1.4m
views
How to change legend title in ggplot
I have the following plot like below. It was created with this command:
library(ggplot2)
df <- data.frame(cond = factor(rep(c("A", "B"), each = 200)),
rating =...
- 63.1k
450
votes
14
answers
693k
views
Side-by-side plots with ggplot2
I would like to place two plots side by side using the ggplot2 package, i.e. do the equivalent of par(mfrow=c(1,2)).
For example, I would like to have the following two plots show side-by-side with ...
- 43.2k
440
votes
2
answers
767k
views
How to set limits for axes in ggplot2 R plots?
I plot the following:
library(ggplot2)
carrots <- data.frame(length = rnorm(500000, 10000, 10000))
cukes <- data.frame(length = rnorm(50000, 10000, 20000))
carrots$veg <- 'carrot'
cukes$...
- 29.7k
399
votes
5
answers
719k
views
Center Plot title in ggplot2
This simple code (and all my scripts from this morning) has started giving me an off center title in ggplot2:
Ubuntu version: 16.04
R studio version: Version 0.99.896
R version: 3.3.2
GGPLOT2 ...
- 4,390
393
votes
16
answers
583k
views
Order Bars in ggplot2 bar graph
I am trying to make a bar graph where the largest bar would be nearest to the y axis and the shortest bar would be furthest. So this is kind of like the Table I have
Name Position
1 James ...
- 9,297
376
votes
4
answers
601k
views
Remove legend ggplot 2.2
I'm trying to keep the legend of one layer (smooth) and remove the legend of the other (point). I have tried shutting off the legends with guides(colour = FALSE) and geom_point(aes(color = vs), show....
- 3,785
371
votes
5
answers
642k
views
Plotting two variables as lines using ggplot2 on the same graph
A very newbish question, but say I have data like this:
test_data <-
data.frame(
var0 = 100 + c(0, cumsum(runif(49, -20, 20))),
var1 = 150 + c(0, cumsum(runif(49, -10, 10))),
date = ...
- 58.1k
357
votes
11
answers
462k
views
How can I save a plot as an image on the disk?
I plot a simple linear regression using R.
I would like to save that image as PNG or JPEG. Is it possible to do it automatically? (via code)
There are two different questions: First, I am already ...
- 3,739
349
votes
19
answers
571k
views
ggplot with 2 y axes on each side and different scales
I need to plot a bar chart showing counts and a line chart showing rate all in one chart, I can do both of them separately, but when I put them together, I scale of the first layer (i.e. the geom_bar) ...
- 24.4k
339
votes
1
answer
768k
views
Remove all of x axis labels in ggplot [duplicate]
I need to remove everything on the x-axis including the labels and tick marks so that only the y-axis is labeled. How would I do this?
In the image below I would like 'clarity' and all of the tick ...
- 7,316
329
votes
10
answers
493k
views
Add regression line equation and R^2 on graph
I wonder how to add regression line equation and R^2 on the ggplot. My code is:
library(ggplot2)
df <- data.frame(x = c(1:100))
df$y <- 2 + 3 * df$x + rnorm(100, sd = 40)
p <- ggplot(data = ...
- 23.6k
311
votes
24
answers
432k
views
How to change facet labels?
I have used the following ggplot command:
ggplot(survey, aes(x = age)) + stat_bin(aes(n = nrow(h3), y = ..count.. / n), binwidth = 10)
+ scale_y_continuous(formatter = "percent", breaks = c(0, 0.1, ...
- 14.6k
306
votes
2
answers
267k
views
Turning off some legends in a ggplot
Suppose I have a ggplot with more than one legend.
mov <- subset(movies, length != "")
(p0 <- ggplot(mov, aes(year, rating, colour = length, shape = mpaa)) +
geom_point()
)
I can turn off ...
- 120k
284
votes
6
answers
436k
views
Increase number of axis ticks
I'm generating plots for some data, but the number of ticks is too small, I need more precision on the reading.
Is there some way to increase the number of axis ticks in ggplot2?
I know I can tell ...
- 8,886
271
votes
7
answers
781k
views
Changing font size and direction of axes text in ggplot2
I am plotting a graph with a categorical variable on the x axis and a numerical variable on the y axis.
For the x axis, given that there are many data points, the default text formatting causes the ...
- 2,938
267
votes
5
answers
228k
views
Emulate ggplot2 default color palette
What function can I use to emulate ggplot2's default color palette for a desired number of colors. For example, an input of 3 would produce a character vector of HEX colors with these colors:
- 36.2k
258
votes
6
answers
435k
views
ggplot2 line chart gives "geom_path: Each group consist of only one observation. Do you need to adjust the group aesthetic?"
With this data frame ("df"):
year pollution
1 1999 346.82000
2 2002 134.30882
3 2005 130.43038
4 2008 88.27546
I try to create a line chart like this:
plot5 <- ggplot(df, aes(year, pollution))...
- 8,893
252
votes
6
answers
768k
views
Change size of axes title and labels in ggplot2
I have a really simple question, which I am struggling to find the answer to. I hoped someone here might be able to help me.
An example dataframe is presented below:
a <- c(1:10)
b <- c(10:1)
...
- 8,424
244
votes
3
answers
527k
views
Label points in geom_point
The data I'm playing with comes from the internet source listed below
nba <- read.csv("http://datasets.flowingdata.com/ppg2008.csv", sep=",")
What I want to do, is create a 2D points graph ...
- 4,158
234
votes
6
answers
170k
views
Annotating text on individual facet in ggplot2
I want to annotate some text on last facet of the plot with the following code:
library(ggplot2)
p <- ggplot(mtcars, aes(mpg, wt)) + geom_point()
p <- p + facet_grid(. ~ cyl)
p <- p + ...
- 23.6k
220
votes
5
answers
315k
views
How to assign colors to categorical variables in ggplot2 that have stable mapping?
I've been getting up to speed with R in the last month.
Here is my question:
What is a good way to assign colors to categorical variables in ggplot2 that have stable mapping? I need consistent ...
- 2,325
219
votes
8
answers
31k
views
How can I handle R CMD check "no visible binding for global variable" notes when my ggplot2 syntax is sensible?
EDIT: Hadley Wickham points out that I misspoke. R CMD check is throwing NOTES, not Warnings. I'm terribly sorry for the confusion. It was my oversight.
The short version
R CMD check throws this note ...
- 6,889
216
votes
2
answers
240k
views
What do hjust and vjust do when making a plot using ggplot?
Every time I make a plot using ggplot, I spend a little while trying different values for hjust and vjust in a line like
+ opts(axis.text.x = theme_text(hjust = 0.5))
to get the axis labels to line ...
- 2,965
212
votes
9
answers
271k
views
Add a common Legend for combined ggplots
I have two ggplots which I align horizontally with grid.arrange. I have looked through a lot of forum posts, but everything I try seem to be commands that are now updated and named something else.
...
- 3,472
211
votes
6
answers
127k
views
How to use a variable to specify column name in ggplot
I have a ggplot command
ggplot( rates.by.groups, aes(x=name, y=rate, colour=majr, group=majr) )
inside a function. But I would like to be able to use a parameter of the function to pick out the ...
- 16k
208
votes
9
answers
291k
views
Show percent % instead of counts in charts of categorical variables
I'm plotting a categorical variable and instead of showing the counts for each category value.
I'm looking for a way to get ggplot to display the percentage of values in that category. Of course, it ...
- 14.6k
205
votes
4
answers
266k
views
Force the origin to start at 0
How can I set the origin / interception of the y-axis and x-axis in ggplot2?
The line of the x-axis should be exactly at y=Z.
With Z=0 or another given value.
- 6,953
200
votes
9
answers
280k
views
Ignore outliers in ggplot2 boxplot
How would I ignore outliers in ggplot2 boxplot? I don't simply want them to disappear (i.e. outlier.size=0), but I want them to be ignored such that the y axis scales to show 1st/3rd percentile. My ...
- 36.2k
200
votes
8
answers
73k
views
Remove 'a' from legend when using aesthetics and geom_text
How can I can remove the letter 'a' from the legend generated by this code? If I remove the geom_text, then the 'a' letter will not show in the legend. I want to keep geom_text, though.
ggplot(data = ...
- 2,043
195
votes
7
answers
637k
views
Adding a regression line on a ggplot
I'm trying hard to add a regression line on a ggplot. I first tried with abline but I didn't manage to make it work. Then I tried this...
data = data.frame(x.plot=rep(seq(1,5),10),y.plot=rnorm(50))
...
- 18k
194
votes
2
answers
686k
views
Editing legend (text) labels in ggplot
I have spent hours looking in the documentation and on StackOverflow, but no solution seems to solve my problem. When using ggplot I can't get the right text in the legend, even though it's in my ...
- 2,043
193
votes
4
answers
316k
views
increase legend font size ggplot2
Is there a way to increase the font size in ggplot2? I think I need to specify something like legend.key.width = unit(2, "line") in the theme function, but that is used to adjust the keys in legends, ...
- 10.8k
192
votes
7
answers
601k
views
How to change line width in ggplot?
Datalink:
the data used
My code:
ccfsisims <- read.csv(file = "F:/Purdue University/RA_Position/PhD_ResearchandDissert/PhD_Draft/GTAP-CGE/GTAP_NewAggDatabase/NewFiles/GTAP_ConsIndex.csv", header=...
- 3,014
188
votes
9
answers
235k
views
ggplot2 plot without axes, legends, etc
I want to use bioconductor's hexbin (which I can do) to generate a plot that fills the entire (png) display region - no axes, no labels, no background, no nuthin'.
- 2,119
187
votes
9
answers
193k
views
Is there a way to change the spacing between legend items in ggplot2?
Is there a way to change the spacing between legend items in ggplot2? I currently have
legend.position ="top"
which automatically produces a horizontal legend. However, the spacing of the items is ...
- 2,153
186
votes
3
answers
278k
views
Reorder bars in geom_bar ggplot2 by value
I am trying to make a bar-plot where the plot is ordered from the miRNA with the highest value to the miRNA with the lowest. Why does my code not work?
> head(corr.m)
miRNA ...
- 2,525
184
votes
10
answers
179k
views
Force R to stop plotting abbreviated axis labels (scientific notation) - e.g. 1e+00
In ggplot2 how can I stop axis labels being abbreviated - e.g. 1e+00, 1e+01 along the x axis once plotted? Ideally, I want to force R to display the actual values which in this case would be 1,10.
...
- 2,631
184
votes
4
answers
406k
views
Add legend to ggplot2 line plot
I have a question about legends in ggplot2. I managed to plot three lines in the same graph and want to add a legend with the three colors used. This is the code used
library(ggplot2)
## edit from ...
- 5,111
183
votes
15
answers
27k
views
Most underused data visualization [closed]
Histograms and scatterplots are great methods of visualizing data and the relationship between variables, but recently I have been wondering about what visualization techniques I am missing. What do ...
181
votes
2
answers
127k
views
ggplot: How to increase spacing between faceted plots?
I have several faceted histograms (obtained with the command below) which are nicely plotted one under the other. I would like to increase the spacing between them, however, they are tight.
I looked ...
- 14.6k
177
votes
3
answers
175k
views
Remove space between plotted data and the axes
I have the following dataframe:
uniq <- structure(list(year = c(1986L, 1987L, 1991L, 1992L, 1993L, 1994L, 1995L, 1996L, 1997L, 1998L, 1999L, 2000L, 2001L, 2002L, 2003L, 2004L, 2005L, 2006L, 2007L, ...
- 82.6k
171
votes
4
answers
302k
views
Setting individual axis limits with facet_wrap and scales = "free" in ggplot2
I'm creating a facetted plot to view predicted vs. actual values side by side with a plot of predicted value vs. residuals. I'll be using shiny to help explore the results of modeling efforts using ...
- 10.5k
170
votes
7
answers
142k
views
Saving grid.arrange() plot to file
I am trying to plot multiple plots using ggplot2, arranging them using grid.arrange().
Since I managed to find someone describing the exact problem I have, I have quoted from the problem description ...
- 7,171
168
votes
1
answer
136k
views
ggplot does not work if it is inside a for loop although it works outside of it [duplicate]
I'm using a simple ggplot function which works fine outside a loop but not inside even if the iterative value does not interfere with the ggplot function. Why is it so ?
Here is my code
x=1:7
y=1:7
...
- 18k
166
votes
14
answers
93k
views
Scatterplot with marginal histograms in ggplot2
Is there a way of creating scatterplots with marginal histograms just like in the sample below in ggplot2? In Matlab it is the scatterhist() function and there exist equivalents for R as well. However,...
- 5,487
164
votes
5
answers
212k
views
How do I change the formatting of numbers on an axis with ggplot? [duplicate]
I'm using R and ggplot to draw a scatterplot of some data, all is fine except that the numbers on the y-axis are coming out with computer style exponent formatting, i.e. 4e+05, 5e+05, etc. This is ...
- 19.9k
164
votes
1
answer
172k
views
facet label font size [duplicate]
Is there a way to change the font size of facet labels in ggplot? I googled and found that the issue was yet on Hadley's to-do list. I wonder if there is a workaround or any news on this issue?
- 28.1k