ggplot2 0.9.1:带有条形图的对数y轴比例 [英] ggplot2 0.9.1: Logarithmic y-axis scale with barchart
问题描述
我试图将条形图的y轴转换为对数刻度(即每个刻度之间的对数距离)。
一些虚拟数据:(data_frame(num = c(1,2,3),label = c(a, b,c))
我试过下面的例子:
p < - ggplot(data = DF,aes(x = label,y = num))+ geom_bar()+
scale_y_continuous(trans ='log10',
breaks = trans_breaks(log10,function(x)10 ^ x),
labels = trans_format(log10,math_format(10 ^ .x)))
这个日志只转换标签,但不转换:
p < - ggplot(data = DF,aes(x = label,y = num))+ geom_bar()+ coord_trans(y =log10)
这根本不绘制任何内容:
p < - ggplot(data = DF,aes(x = label,y = num),y =log)
没有任何运气
我h ave也阅读 0.9转换指南,但这似乎并不我也忘了包括一个我试过的例子:
$$ b
编辑:
$ b $ p
产生以下警告:
警告消息:
在pretty(trans(x),n,...)中:NaNs产生
如果你想做一个log 10 scale的使用
p + scale_y_log10()
I am trying to convert the y-axis of a bar-chart to a logarithmic scale (I.e. logarithmic distance between each ticks).
Some dummy data:
DF <- data.frame(num=c(1,2,3),label=c("a","b","c"))
I've tried the following examples:
p <- ggplot(data=DF,aes(x=label,y=num)) + geom_bar() +
scale_y_continuous(trans = 'log10',
breaks=trans_breaks("log10",function(x) 10^x),
labels=trans_format("log10",math_format(10^.x)))
This only log transforms labels, but not ticks:
p <- ggplot(data=DF,aes(x=label,y=num)) + geom_bar() + coord_trans(y="log10")
This doesn't plot anything at all:
p <- ggplot(data=DF,aes(x=label,y=num),y="log")
No luck either
I have also read the 0.9 transition guide , but that does not seem to work either.
EDIT:
I forgot to include one example I tried:
p <- ggplot(data=DF,aes(x=label,y=num)) + geom_bar() + scale_y_log10()
Which produces the following warning:
Warning message: In pretty(trans(x), n, ...) : NaNs produced
if you want to do a log 10 scale use
p + scale_y_log10()
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