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I cannot realize how to put approximately equal symbol before the text inserted with geom_text. This works:
ggplot(data.frame(x=1:2, y=1:2), aes(x=x,y=y)) + geom_point() +
geom_text(aes(label="10^10", x=1.5, y=1.5), parse=T)
If I put %~~% before the text
ggplot(data.frame(x=1:2, y=1:2), aes(x=x,y=y)) + geom_point() +
geom_text(aes(label="%~~%10^10", x=1.5, y=1.5), parse=T)
it returns an error: unexpected SPECIAL %~~%
I found several related questions but could not apply the given advices. I use package ggplot2_0.9.2.1. Package grDevices is also loaded.
297
The Less Than or Equal To, and Greater Than or Equal To Operators <= and >= We can also check to see if one R object is greater than or equal to (or less than or equal to) another R object. To do this, we can use the less than sign, or the greater than sign, together with the equals sign.
Text geoms are useful for labeling plots. They can be used by themselves as scatterplots or in combination with other geoms, for example, for labeling points or for annotating the height of bars. geom_text() adds only text to the plot. geom_label() draws a rectangle behind the text, making it easier to read.
It will work with something on the left-hand site of the equation. This could also be NULL.
ggplot(data.frame(x=1:2, y=1:2), aes(x=x,y=y)) + geom_point() +
geom_text(aes(label="NULL%~~%10^10", x=1.5, y=1.5), parse=T)
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