panel labels in facet_wrap

[Alexander Shenkin]

Hi Folks,

Is there any way to change the panel label when using facet_wrap (aside from changing the data in the data frame)?  For example, changing the "0" and "1" below in the titles of the panels?  Apologies if this is a simple answer out there somewhere - searching around didn't come up with anything, but I might have been using the wrong terms.

Thanks,
Allie

[Dennis Murphy]

opts(strip.text.x = ) is what you're looking for, which uses theme_text() to modify horizontal strip labels. See either Chapter 8 of Hadley's book or
https://github.com/hadley/ggplot2/wiki/Faceting-Attributes  (thanks to Brandon Hurr).

HTH,
Dennis

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[Alexander Shenkin]

Thanks for your reply, Dennis.  I wasn't entirely clear by what I meant by "change" below.  What I'd actually like to do is to change, "0", for example, to "foo".  That is, I don't just want to change the font, color, etc, but rather the string itself.  As far as I can tell, opts(strip.text.x = theme_text()) only gives you access to the display properties of the panel title, not the text of the title itself.

Thanks,
Allie

[Dennis Murphy]

The easiest way to change the strip label is by creating a new factor in the data and using it as the faceting variable. AFAIK, you can't change it on the fly within a ggplot() call.

On Thu, Oct 13, 2011 at 3:11 PM, Alexander Shenkin <ashe...@ufl.edu> wrote:

Thanks for your reply, Dennis.  I wasn't entirely clear by what I meant by "change" below.  What I'd actually like to do is to change, "0", for example, to "foo".  That is, I don't just want to change the font, color, etc, but rather the string itself.  As far as I can tell, opts(strip.text.x = theme_text()) only gives you access to the display properties of the panel title, not the text of the title itself.

That is true. I didn't read the post carefully enough and my response was incorrect...my lapse.

Dennis

[Winston Chang]

Hi - I've written a patch for this feature which works, but it won't be merged since it doesn't do things the "right" way. Doing it the right way isn't possible without breaking some things, so it'll have to happen in a future major release of ggplot2.

See the pull request for more info:
https://github.com/hadley/ggplot2/pull/656

-Winston

On Thu, Sep 20, 2012 at 5:26 AM, Martin B. <mar...@webscio.net> wrote:

That works more or less, though when you create a new factor, "expression" labels are not formatted properly, i.e. if I have labels = c(expression(x >= 1)) that is exactly what is shown as the label in the graph, not the nice greater-or-equal sign.. (same applies to greek letters, sub-/superscripts etc.). Any way to make this possible?

Please provide a reproducible example: https://github.com/hadley/devtools/wiki/Reproducibility