How to vary binwidth inside ggplot?

[Sav Tan]

Hello,

I'am doing histogram with ggplot.

p <- ggplot(TotCalc, aes(x=x,y=100*(..count../sum(..count..)))) +
xlab(xlabel) + ylab(ylabel) +
geom_histogram(colour = "darkblue", fill = "white", binwidth=500)
my x is between 2 and 6580 and I have 2600 data.

Like this I have 10 bins, each one have a width 500 but

I want to plot one histogram with different binwidth for each bin. Is
it possible?

For example, I want to have 8 bins, with width like this:

c(180,100,110,160,200,250,1000,3000)
How can I do it?

[Brandon Hurr]

Could you just save your vector of binwidths and use a for loop to iterate over the widths? 

You can save each plot in a list to call later or use ggsave() to save each image using paste() to input the name of your x and the binwidth. 

Sound reasonable?

B

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[Sav Tan]

Maybe I can do what you said
But also I can just use breaks, like this
ggplot(TotCalc, aes(x=pCO2,y=100*(..count../sum(..count..)))) +

xlab(xlabel) + ylab(ylabel) +
geom_histogram(colour = "darkblue", fill = "white",

breaks=cumsum(c(180,100,110,160,200,250,1000,3000)), position="dodge")

[Brandon Hurr]

I think I misunderstood what you were after... Does giving the breaks a vector solve your problem? 

[Sav Tan]

yes