[R] Help for funnel plot

[Jim Lemon]

Hi,
Looking at the help page for "funnel", I first thought that the
"shade" argument would be the one. However, that seems to take a
specific color. Perhaps the function computes the shading from that. I
have never used the "funnel" function myself, so I don't have a good
idea of how that left-to-right gradient is determined. Perhaps:

wvb using metafor-project.org

could tell you.

Jim

On Sun, May 15, 2022 at 10:24 PM De Simone
<de.simone.belinda87 using gmail.com> wrote:
>
> Thank you Jim
> I attached an example for color gradient
> What would be the argument for one color gradient. I haven't used the plotrix before
>
> On Sun, May 15, 2022 at 10:56 AM Jim Lemon <drjimlemon using gmail.com> wrote:
>>
>> Hi,
>> There are a number of functions that will transform numeric values
>> into colors. One is color.scale in the plotrix package. This accepts a
>> vector of numeric values and linearly transforms them into one or more
>> ranges of colors. The resulting colors can then be passed to the
>> appropriate arguments in your plotting function.
>>
>> Jim
>>
>> On Sun, May 15, 2022 at 3:48 PM De Simone <de.simone.belinda87 using gmail.com> wrote:
>> >
>> > Hi,
>> > Excuse me for this silly question
>> > how do I get a colour gradient like the one attached. Colours are a bit
>> > limited
>> > Any specific code for the reference line and pseudo confidence lines. I use
>> > "lty", but this do both
>> >
>> > Here is my argument
>> >
>> > dat <- escalc("MD", m1i=Mean_TAP, sd1i= SD_TAP, n1i= N_TAP,
>> > m2i=Mean_caudal, sd2i= SD_caudal, n2i= N_caudal, slab=Study, data=
>> > Duration_of_analgesia)
>> >
>> >
>> >
>> > res <- rma(yi, vi, data=dat, measure="MD", method="DL")
>> >
>> >
>> > funnel(res, main="Duration of analegsia", back = 12, xlab="Mean difference
>> > (hours)", cex = 1.2,  lwd = 2, lty = "solid", mgp = c(2, 1, 0), font.main =
>> > 1, font.lab = 2, font.axis = 2)
>> >
>> > Thank you
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