legend

问题 I have a simple dataframe (WF) that looks like this: head(wf) Date Gals Days GpD GpM 2016-10-21 6.0 1 6.0 186.0 2016-10-22 6.0 1 6.0 186.0 2016-10-23 12.4 1 12.4 384.4 2016-10-24 26.8 1 26.8 830.8 2016-10-25 33.3 1 33.3 1032.3 2016-10-26 28.3 1 28.3 877.3 What I'm trying to do is time series plot Date versus Gals and put a horizontal line for the mean and median. The glitch I'm facing is correctly putting a legend on the plot. My code so far: require(ggplot2) p1<-ggplot(data=wf, aes(Date,

问题 I want to add a legend to my graph. All solutions I found online use scale_color_manual - but it's not working for me. Where is the legend? Here is my code: library(ggplot2) ggplot() + geom_density(aes(x = rnorm(100)), color = 'red') + geom_density(aes(x = rnorm(100)), color = 'blue') + xlab("Age") + ylab("Density") + ggtitle('Age Densities') theme(legend.position = 'right') + scale_color_manual(labels = c('first', 'second'), values = c('red', 'blue')) 回答1: If for some reason you absolutely

问题 I have a Figure file where I would like to change the order of the entries (e.g., put the first entry as third one). I saved this Figure.fig long time ago so I am not sure if I can recover the original code. Here I show you my plot: I want the legend elements to be in a decreasing order ( as in the picture) but due to a mistake my second entry is referring to the wrong plot (it says "25 years" but the plot is actually referred to the lowest trend, corresponding to the "9 years" trend). Can I

问题 I've plotted data points and fitted an exponential curve between them using 'fit' in Matlab. The problem is that with the fit-function I got the fitted line I wanted to plot, but also extra markers on top of my regular markers. I solved this problem by plotting the wanted markers on top of the unwanted so that they couldn't be seen. Now to the problem. When I want to show the legends those dots are also in there. How can I remove the markers from the legend without removing the fitted line

问题 As part of a loop I am creating several radarcharts. Each chart is a country, the information displayed in the cobweb are data for several years (lines of different colors). I am trying to add a legend which would make it clear which line (color) relates to which year. As far as I could see, the help file on radarchart is silent on this. (I saw the previous post on this matter, but don't think it's applicable since I am here working in a loop). I would be grateful for any hint. Here is the

问题 For my legend in ggplot2 I have 2 categories, how do I italicize only 1 category and not the other? Thanks! 回答1: You can use expression and italic to create italicised text on labels. data("mtcars") library(ggplot2) p <- ggplot(data = mtcars, aes(x = as.factor(am), fill = as.factor(am))) + geom_bar() + scale_fill_discrete("Transmission", breaks = c(0, 1), labels = c("Automatic", expression(italic("Manual")))) p 来源： https://stackoverflow.com/questions/48688404/how-to-italicize-1-category-in-a

问题 Let me preface this by saying Pie Charts were not my choice, it is a facet of a report that was requested by a supervisor. I have a series of pie charts created from the following code: perpie <- Full_Mod_good %>% split(.$ServiceSite) %>% imap(function(data, site) { data %>% group_by(ServiceSite, InitialType) %>% summarise(count = n()) %>% mutate(share = round(count / sum(count), digits = 2)) %>% ggplot(aes(x = "", y = share, fill = InitialType)) + geom_col(width = 1) + geom_text(aes(label =

问题 I am trying to plot some graph using ggplot2 in R and label the legends using unicode characters such as Japanese. The following is my code: ggplot(mtcars, aes(x=mpg, y=wt, colour = 'ああ')) + geom_line() But I end up getting the following plot: The legend is not displayed properly. Could anyone tell me how to fix this? Thank you so much!! 来源： https://stackoverflow.com/questions/39348634/unicode-characters-in-ggplot-legend

问题 I try to create a customized legend in my chart but something strange happens when I display one or two legends. When I display 2 legends (the old one and the new one), everything is allright, colors are respected in legends and in the graph. But, when I want to display only the new legend, the colors in the legend are respected but the colors in the graph are not respected anymore. This is an example on my issue: You have to comment and decomment a line to see the problem (see comments)

问题 I want to have three curves on the same plot with different parameter alpha. curve(sin(x), from = 1, to = 3, lty = 1, ylim = c(-1, 1)) curve(sin(2 * x), add = TRUE, lty = 2) curve(sin(3 * x), add = TRUE, lty = 3) legend("topright", legend = expression(paste(alpha, " = ", c(1, 2, 3))), lty = 1:3) In the legend, I want to have three lines with alplha = 1, alpha = 2, alpha = 3. How do I make it correct? 回答1: The better, looped answer comes from here and user20650. Solution with sapply The