如何在带有希腊字母的ggplot标题中使用上标
How to use superscript in a ggplot title with greek letter
如何用ggplot在标题中写一个带上标的希腊字母(tau)?我尝试如下:
cor <- cor(H2ORateTau[,"Tau"],H2ORateTau[,"Rate"])
ggplot(data = H2ORateTau, aes(x=Tau,y=Rate)) +
geom_point(col="red",size=1.5)+
geom_smooth(method="lm", se=TRUE) +
labs(title=expression(paste(Rate of decay vs tau^2)),subtitle=paste("Water Correlation Coefficient :",round(cor,digits=4)),
y=expression(paste("R"["2obs"]*"(ms"^"-1"*")")), x=expression(paste(tau^2, (ms^2)))) +
theme_bw()
我不明白为什么 expression(paste())
适用于 x 标签而不适用于标题...任何提示将不胜感激。
用你的数据试试这个:
#Code
ggplot(data = iris, aes(x=Sepal.Length,y=Sepal.Width)) +
geom_point(col="red",size=1.5)+
geom_smooth(method="lm", se=TRUE) +
labs(title=expression(Rate~of~decay~vs~tau^2),
subtitle=paste("Water Correlation Coefficient :",round(cor,digits=4)),
y=expression(paste("R"["2obs"]*"(ms"^"-1"*")")), x=expression(paste(tau^2, (ms^2)))) +
theme_bw()
输出:
您的代码如下所示(未测试,因为没有共享数据):
#Code
ggplot(data = H2ORateTau, aes(x=Tau,y=Rate)) +
geom_point(col="red",size=1.5)+
geom_smooth(method="lm", se=TRUE) +
labs(title=expression(Rate~of~decay~vs~tau^2),
subtitle=paste("Water Correlation Coefficient :",round(cor,digits=4)),
y=expression(paste("R"["2obs"]*"(ms"^"-1"*")")), x=expression(paste(tau^2, (ms^2)))) +
theme_bw()
可能是,我们需要将 paste
更改为
plot(1, 1, main = expression(paste("Rate of decay vs", tau^2)))
或者在 OP 的代码中
ggplot(data = H2ORateTau, aes(x=Tau,y=Rate)) +
geom_point(col="red",size=1.5)+
geom_smooth(method="lm", se=TRUE) +
labs(title= expression(paste("Rate of decay vs", tau^2)),subtitle=paste("Water Correlation Coefficient :",round(cor,digits=4)),
y=expression(paste("R"["2obs"]*"(ms"^"-1"*")")), x=expression(paste(tau^2, (ms^2)))) +
theme_bw()
-使用可重现的例子
ggplot(data = iris, aes(x = Sepal.Length,y = Sepal.Width)) +
geom_point(col="red",size=1.5)+
geom_smooth(method="lm", se=TRUE) +
labs(title=expression(paste("Rate of decay vs ", tau^2)))
-输出
如何用ggplot在标题中写一个带上标的希腊字母(tau)?我尝试如下:
cor <- cor(H2ORateTau[,"Tau"],H2ORateTau[,"Rate"])
ggplot(data = H2ORateTau, aes(x=Tau,y=Rate)) +
geom_point(col="red",size=1.5)+
geom_smooth(method="lm", se=TRUE) +
labs(title=expression(paste(Rate of decay vs tau^2)),subtitle=paste("Water Correlation Coefficient :",round(cor,digits=4)),
y=expression(paste("R"["2obs"]*"(ms"^"-1"*")")), x=expression(paste(tau^2, (ms^2)))) +
theme_bw()
我不明白为什么 expression(paste())
适用于 x 标签而不适用于标题...任何提示将不胜感激。
用你的数据试试这个:
#Code
ggplot(data = iris, aes(x=Sepal.Length,y=Sepal.Width)) +
geom_point(col="red",size=1.5)+
geom_smooth(method="lm", se=TRUE) +
labs(title=expression(Rate~of~decay~vs~tau^2),
subtitle=paste("Water Correlation Coefficient :",round(cor,digits=4)),
y=expression(paste("R"["2obs"]*"(ms"^"-1"*")")), x=expression(paste(tau^2, (ms^2)))) +
theme_bw()
输出:
您的代码如下所示(未测试,因为没有共享数据):
#Code
ggplot(data = H2ORateTau, aes(x=Tau,y=Rate)) +
geom_point(col="red",size=1.5)+
geom_smooth(method="lm", se=TRUE) +
labs(title=expression(Rate~of~decay~vs~tau^2),
subtitle=paste("Water Correlation Coefficient :",round(cor,digits=4)),
y=expression(paste("R"["2obs"]*"(ms"^"-1"*")")), x=expression(paste(tau^2, (ms^2)))) +
theme_bw()
可能是,我们需要将 paste
更改为
plot(1, 1, main = expression(paste("Rate of decay vs", tau^2)))
或者在 OP 的代码中
ggplot(data = H2ORateTau, aes(x=Tau,y=Rate)) +
geom_point(col="red",size=1.5)+
geom_smooth(method="lm", se=TRUE) +
labs(title= expression(paste("Rate of decay vs", tau^2)),subtitle=paste("Water Correlation Coefficient :",round(cor,digits=4)),
y=expression(paste("R"["2obs"]*"(ms"^"-1"*")")), x=expression(paste(tau^2, (ms^2)))) +
theme_bw()
-使用可重现的例子
ggplot(data = iris, aes(x = Sepal.Length,y = Sepal.Width)) +
geom_point(col="red",size=1.5)+
geom_smooth(method="lm", se=TRUE) +
labs(title=expression(paste("Rate of decay vs ", tau^2)))
-输出