facet strip thickness?

[CK]

Is there a way to specify the width/height of the panel strips in a
facet plot? I can see that changing the font size via opts changes it
automatically, e.g.

+opts(strip.text.y = theme_text(size=6, face='bold'))

However I would like a much thinner strip with minimal padding. Is
this possible?

[Dennis Murphy]

https://github.com/hadley/ggplot2/wiki/Faceting-Attributes

is probably a good place to start.

Dennis

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[CK]

Is the answer there? As far as I can tell:

panel.margin () -- space between the panels
strip.text.y (text) -- font of the panel strip text
strip.text.x (text) -- same
strip.background (rect) -- background of the panel strip

Also tried 'theme_get()' but don't see any obvious setting for panel
strip re-sizing.

[Brandon Hurr]

I imagine that feature is automatically done based upon the size of the text and the "padding" is constant. Takahasi of Hadley would know for sure. 

[Dennis Murphy]

I expected that theme_rect would allow you to control the height or
width of a strip, but it turns out to be hardcoded:

> theme_rect
function (fill = NA, colour = "black", size = 0.5, linetype = 1)
{
structure(function(x = 0.5, y = 0.5, width = 1, height = 1,
...) {
rectGrob(x, y, width, height, ..., gp = gpar(lwd = size *
.pt, col = colour, fill = fill, lty = linetype),
)
}, class = "theme", type = "box", call = match.call())
}
<environment: namespace:ggplot2>

(see the line starting with structure).

I tried to modify the function to accept a height argument, but
unsurprisingly, it didn't fly because the argument clashes with
previous code used to render the plot. You may have to try the grid
package to change strip heights, or wait to see if one of the
developers chimes in with a solution.

Sorry for the noise,
Dennis