如何更改x轴限制ggplot2 r [英] how to change x-axis limits ggplot2 r
问题描述
我想使用ggplot条形图来设置x轴的限制。整个情节是好的,但是当我使用ylim(1,6)(这些是我需要的限制)时,这些条消失了。
数据:
$ (c(1:13))var.B <-c(4.351833,c(1:13))b
$ b
var.A < - as.numeric (var.A,var.B)
的数据(例如,如图2所示) code>
Ggplot代码:
ggplot(df,aes(x = factor(var.A),y = var.B))+
geom_bar(position = position_dodge(),stat =identity,fill =#fff68f,color = darkgrey,width = 0.4)+
coord_flip()+
xlab()+
ylab()+
scale_x_discrete(labels = c(aaaaaaa aaaaa ,bbbbb bbb bbbb,cccc ccc,dddd dd ddddd,
eee e eeeee e ee,ffffffff,gggggggg,hhhhhhh,iiii,
)jjjjjj,kkkkkkk,llllll,mmmmmmmm))
添加: ylim(1,6)+
的东西出错了。
还有一件事。每个栏的颜色设置为 fill =#fff68f
。是否有任何解决方案来改变一个栏的颜色,例如,我希望不同的顶部第一个,即#ee2c2c
。
因为您使用
coord_flip()
,您可以用 scale_y_continuous(expand = c(0,0),limits = c(1,6),oob = rescale_none)
并为每个可以使用的小节设置颜色 scale_fill_manual values = c(#ee2c2c,...)
。 因此,如果您想手动设置条的颜色,首先需要创建名称向量并将其插入到数据框中:
names< - c(aaaaaaa aaaaa, bbbbb bbb bbbb,cccc ccc,dddd dd ddddd,
eee e eeeee e ee,ffffffff,gggggggg,hhhhhhh,iiii,
jjjjjj ,kkkkkkk,llllll,mmmmmmmm)
var.A< - as.numeric(c(1:13))
var.B< - c (4.351833,2.938000,4.726465,3.747162,3.720737,4.297117,4.304500,4.061277,4.595236,4.105444,3.701684,3.523563,4.1700 00)
df< - data.frame(var.A,var.B,names)
为了在ggplot中定义变量名称和颜色,您需要将矢量的结构从字符更改为因子(以获得级别)。
var.names = factor(df $ names,
levels = c(aaaaaaa aaaaa,bbbbb bbb bbbb, cccc ccc,dddd dd ddddd,eee e eeeee e ee,ffffffff,gggggggg,hhhhhhh,iiii,jjjjjj,kkkkkkk,llllll,mmmmmmmm ),ordered = T)
所以你的代码如下所示:
ggplot(df,aes(x = var.names,y = var.B,fill = as.factor(var.names)))+
geom_bar(position = position_dodge(),stat =identity,width = 0.4)+
coord_flip()+
scale_y_continuous(expand = c(0,0),limits = c(1,6 ),oob = rescale_none)+
xlab()+
ylab()+
scale_fill_manual(values = c(c(rep(#fff68f,12)), #ee2c2c))
输出结果为
I would like to set limit for x-axis using ggplot bar plot. The whole plot is ok, but when I use ylim(1,6) (these are limits what I need) the bars disappear.
Data:
var.A <- as.numeric(c(1:13))
var.B <- c(4.351833, 2.938000, 4.726465, 3.747162, 3.720737, 4.297117, 4.304500, 4.061277, 4.595236, 4.105444, 3.701684, 3.523563, 4.170000)
df <- data.frame(var.A,var.B)
Ggplot code:
ggplot(df, aes(x=factor(var.A), y=var.B)) +
geom_bar(position=position_dodge(), stat="identity", fill="#fff68f", colour="darkgrey", width = 0.4) +
coord_flip()+
xlab("") +
ylab("") +
scale_x_discrete(labels=c("aaaaaaa aaaaa","bbbbb bbb bbbb","cccc ccc","dddd dd ddddd",
"eee e eeeee e ee","ffffffff","gggggggg","hhhhhhh","iiii",
"jjjjjj","kkkkkkk","llllll","mmmmmmmm"))
And when I add: ylim(1,6) +
things are going wrong.
And another thing. The color of every bar is set as fill="#fff68f"
. Is there any solution to change color of one bar, for example the first from top I'd like to be different, i.e. #ee2c2c
.
Because you used coord_flip()
you can set limits of x-axis with scale_y_continuous(expand=c(0,0),limits=c(1,6),oob = rescale_none)
and for setting colors for every bar you can use scale_fill_manual(values = c("#ee2c2c",...)
.
So if you would like to set the color of bars manually, you first need to create vector of names and insert it in your dataframe:
names <- c("aaaaaaa aaaaa","bbbbb bbb bbbb","cccc ccc","dddd dd ddddd",
"eee e eeeee e ee","ffffffff","gggggggg","hhhhhhh","iiii",
"jjjjjj","kkkkkkk","llllll","mmmmmmmm")
var.A <- as.numeric(c(1:13))
var.B <- c(4.351833, 2.938000, 4.726465, 3.747162, 3.720737, 4.297117, 4.304500, 4.061277, 4.595236, 4.105444, 3.701684, 3.523563, 4.170000)
df <- data.frame(var.A,var.B,names)
And to order variable names and colors in ggplot you need to change the structure of vector from character to factor (in order to get levels).
var.names = factor(df$names,
levels = c("aaaaaaa aaaaa","bbbbb bbb bbbb","cccc ccc","dddd dd ddddd", "eee e eeeee e ee","ffffffff","gggggggg","hhhhhhh","iiii", "jjjjjj","kkkkkkk","llllll","mmmmmmmm"), ordered=T)
So your code then looks like:
ggplot(df, aes(x=var.names, y=var.B, fill=as.factor(var.names))) +
geom_bar(position=position_dodge(), stat="identity", width = 0.4) +
coord_flip()+
scale_y_continuous(expand=c(0,0),limits=c(1,6),oob = rescale_none) +
xlab("") +
ylab("") +
scale_fill_manual(values = c(c(rep("#fff68f",12)),"#ee2c2c"))
And output is
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