Re: [R] Lattice: hiding only some strips

From: Michael Hoffman <>
Date: Sat, 23 Jun 2007 02:09:59 +0100

Deepayan Sarkar wrote:
> On 6/22/07, Michael Hoffman <> wrote:

>> I am using R 2.4.0 and lattice to produce some xyplots conditioned on a
>> factor and a shingle. The shingle merely chops up the data along the
>> x-axis, so it is easy to identify which part of the shingle a panel is
>> in by looking at the x-axis markings. I only want to have a strip at the
>> top for the factor.
>> Is this possible? I looked into calculateGridLayout() and it seems to me
>> that there isn't an easy way to do it without rewriting that function
>> (and others).

> It's nowhere near that complicated, you just need to write your own
> strip function. E.g.,
> mtcars$HP <- equal.count(mtcars$hp)
> xyplot(mpg ~ disp | HP + factor(cyl), mtcars,
> par.strip.text = list(lines = 0.5),
> strip = function(which.given, which.panel, ...) {
> if (which.given == 2)
> strip.default(which.given = 1,
> which.panel = which.panel[which.given],
> ...)
> })

Thank you for this response. But it looks like I poorly specified the problem. I only want to have a strip at the very top of the plot, not at the top of each panel.

You can probably understand why I want this better if we take your example and swap the givens around:

xyplot(mpg ~ disp | factor(cyl) * HP, mtcars,

        par.strip.text = list(lines = 0.5),
        strip = function(which.given, which.panel, ...) {
            if (which.given == 1)
                strip.default(which.given = 1,
                              which.panel = which.panel[which.given],

So now I have 4, 6, and 8 at the top of every row of panels as a label for cyl. But I don't need that--really I only need 4, 6, and 8 at the very top (or bottom) of the plot, just like with default settings I only get the axis labels at the top and bottom of the plot, not duplicated for every panel.

What I want is to draw strips at the very top of the plot and not to draw strips that are between panels.

Can this be done? mailing list PLEASE do read the posting guide and provide commented, minimal, self-contained, reproducible code. Received on Sat 23 Jun 2007 - 02:34:07 GMT

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