本文介绍了删除ggplot y轴和第一个x值之间的间隙的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我需要在x轴上删除1950年前的差距。
I need to remove the gap preceding 1950 on the x axis.
我试图使用 scale_x_continuous
但是这导致:
I have attempted to use scale_x_continuous
but this results in:
错误:提供给连续比例的离散值
我相信这必须与数据的日期格式有关。
I believe this must have something to do with the date format of the data.
示例数据:
x y date
1 -631152000 -1.018 1950-01-01 01:32:40
2 -628473600 -1.143 1950-02-01 01:32:40
3 -626054400 -1.290 1950-03-01 01:32:40
4 -623376000 -1.061 1950-04-01 01:32:40
5 -620784000 -1.416 1950-05-01 01:32:40
6 -618105600 -1.372 1950-06-01 01:32:40
7 -615513600 -1.334 1950-07-01 01:32:40
8 -612835200 -1.050 1950-08-01 01:32:40
9 -610156800 -0.578 1950-09-01 01:32:40
10 -607564800 -0.395 1950-10-01 01:32:40
用于创建情节的代码:
Plot <- ggplot(d2,aes(x = date,
y = y)) +
geom_area(data=subset(d2, y<=0), fill="blue") +
geom_area(data=subset(d2, y>=0), fill="red") +
scale_y_continuous(name = "MEI")+
xlab("Year")+
theme(axis.text.y = element_text(size=24),
axis.text.x = element_text(size=24),
axis.title.y = element_text(size=24),
axis.title.x = element_text(size=24),
panel.background = element_blank(),
panel.grid.major = element_line(colour = "grey"),
strip.background = element_blank(),
panel.border = element_rect(colour = "black", fill = NA),
axis.line = element_line(colour = "black"))
任何帮助将不胜感激!
Any help would be greatly appreciated!!!
推荐答案
您可以使用展开
参数 scale_x_datetime
以删除轴和数据开始之间的空格。 (你也可以使用scale_y(x)_continuous和其他...)
You can use the expand
argument of scale_x_datetime
to remove the space between the axis and the start of the data. (you can also use this in scale_y(x)_continuous, and others...)
# your data - tweaked to include pos / neg y values
d2 <- read.table(text="x y date
1 -631152000 -1.018 '1950-01-01 01:32:40'
2 -628473600 -1.143 '1950-02-01 01:32:40'
3 -626054400 -1.290 '1950-03-01 01:32:40'
4 -623376000 -1.061 '1950-04-01 01:32:40'
5 -620784000 -1.416 '1950-05-01 01:32:40'
6 -618105600 1.372 '1950-06-01 01:32:40'
7 -615513600 1.334 '1950-07-01 01:32:40'
8 -612835200 1.050 '1950-08-01 01:32:40'
9 -610156800 0.578 '1950-09-01 01:32:40'
10 -607564800 0.395 '1950-10-01 01:32:40'", header=TRUE)
# create date class and tag for y being pos / negative
d2$date <- as.POSIXct(d2$date)
d2$tag <- d2$y < 0
library(ggplot2)
ggplot(d2,aes(x = date, y = y, fill=tag)) +
geom_area() +
scale_y_continuous(name = "MEI")+
scale_x_datetime(expand=c(0,0))
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