Example of stat_bin2d with a log-scaled axis

[tgs]

I couldn't find an example of this anywhere, and it took me an hour to figure out, so I thought maybe it belonged in the documentation. I'm not sure if anyone else is trying to do this, though.

Here's the image that the added example generates:

And here's the current help page: http://docs.ggplot2.org/current/stat_bin2d.html

[hadley]

Why not just use scale_y_log10() ?

[tgs]

You're right, this doesn't make sense on its own. The issue I had is that I wanted to set explicit breaks for one dimension (x axis as date binned by month), and so I had to also set the breaks for the other dimension, because stat_bin2d requires that both dimensions of breaks be supplied the same way. So you have to say stat_bin2d(breaks=list(x = xbreaks, y = ybreaks)). I could have avoided the whole issue if I could have said stat_bin2d(breaks = list(x = xbreaks, y = NA)), and had it generate its default breaks for the y axis. Maybe I should throw out this documentation patch, and write that functionality patch instead.

Or is there some other way I should have made the graph in the first place?

    x_edges <- as.numeric(seq(floor_date(x_range[1], 'month'),
                              ceiling_date(x_range[2], 'month'), by="month"))

    y_edges <- seq(log10(y_range[1] * 0.95),
                   log10(y_range[2] * 1.05), length.out=30)

    (ggplot(data)
     + aes(...)
     + scale_y_log10()
     + stat_bin2d(breaks=list(x = x_edges, y = y_edges)))

[tgs]

Take a look at #1126 instead?

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