forest.cumul.rma <- function(x,
annotate=TRUE, header=TRUE,
xlim, alim, olim, ylim, at, steps=5, refline=0, digits=2L, width,
xlab, ilab, ilab.lab, ilab.xpos, ilab.pos,
transf, atransf, targs, rows,
efac=1, pch, psize, col, shade, colshade,
lty, fonts, cex, cex.lab, cex.axis, ...) {
#########################################################################
mstyle <- .get.mstyle()
.chkclass(class(x), must="cumul.rma")
na.act <- getOption("na.action")
if (!is.element(na.act, c("na.omit", "na.exclude", "na.fail", "na.pass")))
stop(mstyle$stop("Unknown 'na.action' specified under options()."))
if (x$transf) # if results were transformed, need x$se not be missing below (not really used anyway)
x$se <- rep(0, length(x$estimate))
if (missing(transf))
transf <- FALSE
if (missing(atransf))
atransf <- FALSE
transf.char <- deparse(transf)
atransf.char <- deparse(atransf)
if (is.function(transf) && is.function(atransf))
stop(mstyle$stop("Use either 'transf' or 'atransf' to specify a transformation (not both)."))
.start.plot()
yi <- x$estimate
if (missing(targs))
targs <- NULL
if (missing(at))
at <- NULL
mf <- match.call()
if (missing(ilab)) {
ilab <- NULL
} else {
ilab <- .getx("ilab", mf=mf, data=x$data)
}
if (missing(ilab.lab))
ilab.lab <- NULL
if (missing(ilab.xpos))
ilab.xpos <- NULL
if (missing(ilab.pos))
ilab.pos <- NULL
if (missing(col)) {
col <- par("fg")
} else {
col <- .getx("col", mf=mf, data=x$data)
}
if (missing(pch)) {
pch <- 15
} else {
pch <- .getx("pch", mf=mf, data=x$data)
}
if (missing(psize)) {
psize <- 1
} else {
psize <- .getx("psize", mf=mf, data=x$data)
}
if (missing(shade)) {
shade <- NULL
} else {
shade <- .getx("shade", mf=mf, data=x$data)
}
if (missing(colshade))
colshade <- .coladj(par("bg","fg"), dark=0.1, light=-0.1)
if (missing(cex))
cex <- NULL
if (missing(cex.lab))
cex.lab <- NULL
if (missing(cex.axis))
cex.axis <- NULL
level <- .level(x$level)
### digits[1] for annotations, digits[2] for x-axis labels
### note: digits can also be a list (e.g., digits=list(2,3L)); trailing 0's on the x-axis labels
### are dropped if the value is an integer
if (length(digits) == 1L)
digits <- c(digits,digits)
ddd <- list(...)
############################################################################
### set default line types if user has not specified 'lty' argument
if (missing(lty)) {
lty <- c("solid", "solid") # 1st = CIs, 2nd = horizontal line(s)
} else {
if (length(lty) == 1L)
lty <- c(lty, "solid")
}
### vertical expansion factor: 1st = CI end lines, 2nd = arrows
efac <- .expand1(efac, 2L)
efac[efac == 0] <- NA
### annotation symbols vector
if (is.null(ddd$annosym)) {
annosym <- c(" [", ", ", "]", "-", " ") # 4th element for minus sign symbol; 5th for space (in place of numbers and +); see [a]
} else {
annosym <- ddd$annosym
if (length(annosym) == 3L)
annosym <- c(annosym, "-", " ")
if (length(annosym) == 4L)
annosym <- c(annosym, " ")
if (length(annosym) != 5L)
stop(mstyle$stop("Argument 'annosym' must be a vector of length 3 (or 4 or 5)."))
}
### adjust annosym for tabular figures
if (isTRUE(ddd$tabfig == 1))
annosym <- c("\u2009[", ",\u2009", "]", "\u2212", "\u2002") # \u2009 thin space; \u2212 minus, \u2002 en space
if (isTRUE(ddd$tabfig == 2))
annosym <- c("\u2009[", ",\u2009", "]", "\u2013", "\u2002") # \u2009 thin space; \u2013 en dash, \u2002 en space
if (isTRUE(ddd$tabfig == 3))
annosym <- c("\u2009[", ",\u2009", "]", "\u2212", "\u2007") # \u2009 thin space; \u2212 minus, \u2007 figure space
### get measure from object
measure <- x$measure
### column header
estlab <- .setlab(measure, transf.char, atransf.char, gentype=3, short=TRUE)
if (is.expression(estlab)) {
header.right <- str2lang(paste0("bold(", estlab, " * '", annosym[1], "' * '", round(100*(1-level),digits[[1]]), "% CI'", " * '", annosym[3], "')"))
} else {
header.right <- paste0(estlab, annosym[1], round(100*(1-level),digits[[1]]), "% CI", annosym[3])
}
if (is.logical(header)) {
if (header) {
header.left <- "Study"
} else {
header.left <- NULL
header.right <- NULL
}
} else {
if (!is.character(header))
stop(mstyle$stop("Argument 'header' must either be a logical or character vector."))
if (length(header) == 1L) {
header.left <- header
} else {
header.left <- header[1]
header.right <- header[2]
}
}
if (!annotate)
header.right <- NULL
if (!is.null(ddd$clim))
olim <- ddd$clim
### row adjustments for 1) study labels, 2) annotations, and 3) ilab elements
if (is.null(ddd$rowadj)) {
rowadj <- rep(0,3)
} else {
rowadj <- ddd$rowadj
if (length(rowadj) == 1L)
rowadj <- c(rowadj,rowadj,0) # if one value is specified, use it for both 1&2
if (length(rowadj) == 2L)
rowadj <- c(rowadj,0) # if two values are specified, use them for 1&2
}
top <- .chkddd(ddd$top, 3)
if (is.null(ddd$xlabadj)) {
xlabadj <- c(NA,NA)
} else {
xlabadj <- ddd$xlabadj
if (length(xlabadj) == 1L)
xlabadj <- c(xlabadj, 1-xlabadj)
}
xlabfont <- .chkddd(ddd$xlabfont, 1)
lplot <- function(..., textpos, clim, rowadj, annosym, tabfig, top, xlabadj, xlabfont, at.lab) plot(...)
labline <- function(..., textpos, clim, rowadj, annosym, tabfig, top, xlabadj, xlabfont, at.lab) abline(...)
lsegments <- function(..., textpos, clim, rowadj, annosym, tabfig, top, xlabadj, xlabfont, at.lab) segments(...)
laxis <- function(..., textpos, clim, rowadj, annosym, tabfig, top, xlabadj, xlabfont, at.lab) axis(...)
lmtext <- function(..., textpos, clim, rowadj, annosym, tabfig, top, xlabadj, xlabfont, at.lab) mtext(...)
lpolygon <- function(..., textpos, clim, rowadj, annosym, tabfig, top, xlabadj, xlabfont, at.lab) polygon(...)
ltext <- function(..., textpos, clim, rowadj, annosym, tabfig, top, xlabadj, xlabfont, at.lab) text(...)
lpoints <- function(..., textpos, clim, rowadj, annosym, tabfig, top, xlabadj, xlabfont, at.lab) points(...)
#########################################################################
### extract data / results and other arguments
vi <- x$se^2
ci.lb <- x$ci.lb
ci.ub <- x$ci.ub
### check length of yi and vi
k <- length(yi) # either of length k when na.action="na.omit" or k.f otherwise
if (length(vi) != k)
stop(mstyle$stop("Length of 'yi' and 'vi' (or 'sei') is not the same."))
### note: ilab, pch, psize, col must be of the same length as yi (which may
### or may not contain NAs; this is different than the other forest()
### functions but it would be tricky to make this fully consistent now)
if (x$slab.null) {
slab <- paste("+ Study", x$ids) # cumul() removes the studies with NAs when na.action="na.omit"
slab[1] <- paste("Study", x$ids[1])
slab.null <- TRUE
} else {
slab <- paste("+", x$slab) # cumul() removes the studies with NAs when na.action="na.omit"
slab[1] <- paste(x$slab[1])
slab.null <- FALSE
}
if (!is.null(ilab)) {
if (is.null(dim(ilab)))
ilab <- cbind(ilab)
if (nrow(ilab) != k)
stop(mstyle$stop(paste0("Length of the 'ilab' argument (", nrow(ilab), ") does not correspond to the number of outcomes (", k, ").")))
}
pch <- .expand1(pch, k)
if (length(pch) != k)
stop(mstyle$stop(paste0("Length of the 'pch' argument (", length(pch), ") does not correspond to the number of outcomes (", k, ").")))
psize <- .expand1(psize, k)
if (length(psize) != k)
stop(mstyle$stop(paste0("Length of the 'psize' argument (", length(psize), ") does not correspond to the number of outcomes (", k, ").")))
col <- .expand1(col, k)
if (length(col) != k)
stop(mstyle$stop(paste0("Length of the 'col' argument (", length(col), ") does not correspond to the number of outcomes (", k, ").")))
shade.type <- "none"
if (is.character(shade)) {
shade.type <- "character"
shade <- shade[1]
if (!is.element(shade, c("zebra", "zebra1", "zebra2", "all")))
stop(mstyle$stop("Unknown option specified for 'shade' argument."))
}
if (is.logical(shade)) {
if (length(shade) == 1L) {
shade <- "zebra"
shade.type <- "character"
} else {
shade.type <- "logical"
shade <- .chksubset(shade, k, stoponk0=FALSE)
}
}
if (is.numeric(shade))
shade.type <- "numeric"
### set rows value
if (missing(rows)) {
rows <- k:1
} else {
if (length(rows) == 1L)
rows <- rows:(rows-k+1)
}
if (length(rows) != k)
stop(mstyle$stop(paste0("Length of the 'rows' argument (", length(rows), ") does not correspond to the number of outcomes (", k, ").")))
### reverse order
yi <- yi[k:1]
vi <- vi[k:1]
ci.lb <- ci.lb[k:1]
ci.ub <- ci.ub[k:1]
slab <- slab[k:1]
ilab <- ilab[k:1,,drop=FALSE] # if NULL, remains NULL
pch <- pch[k:1]
psize <- psize[k:1] # if NULL, remains NULL
col <- col[k:1]
rows <- rows[k:1]
if (shade.type == "logical")
shade <- shade[k:1]
### check for NAs in yi/vi and act accordingly
yivi.na <- is.na(yi) | is.na(vi)
if (any(yivi.na)) {
not.na <- !yivi.na
if (na.act == "na.omit") {
yi <- yi[not.na]
vi <- vi[not.na]
ci.lb <- ci.lb[not.na]
ci.ub <- ci.ub[not.na]
slab <- slab[not.na]
ilab <- ilab[not.na,,drop=FALSE] # if NULL, remains NULL
pch <- pch[not.na]
psize <- psize[not.na] # if NULL, remains NULL
col <- col[not.na]
if (shade.type == "logical")
shade <- shade[not.na]
rows.new <- rows # rearrange rows due to NAs being omitted from plot
rows.na <- rows[!not.na] # shift higher rows down according to number of NAs omitted
for (j in seq_along(rows.na)) {
rows.new[rows >= rows.na[j]] <- rows.new[rows >= rows.na[j]] - 1
}
rows <- rows.new[not.na]
}
if (na.act == "na.fail")
stop(mstyle$stop("Missing values in results."))
} # note: yi/vi may be NA if na.act == "na.exclude" or "na.pass"
k <- length(yi) # in case length of k has changed
### if requested, apply transformation to yi's and CI bounds
if (is.function(transf)) {
if (is.null(targs)) {
yi <- sapply(yi, transf)
ci.lb <- sapply(ci.lb, transf)
ci.ub <- sapply(ci.ub, transf)
} else {
yi <- sapply(yi, transf, targs)
ci.lb <- sapply(ci.lb, transf, targs)
ci.ub <- sapply(ci.ub, transf, targs)
}
}
### make sure order of intervals is always increasing
tmp <- .psort(ci.lb, ci.ub)
ci.lb <- tmp[,1]
ci.ub <- tmp[,2]
### apply observation/outcome limits if specified
if (!missing(olim)) {
if (length(olim) != 2L)
stop(mstyle$stop("Argument 'olim' must be of length 2."))
olim <- sort(olim)
yi <- .applyolim(yi, olim)
ci.lb <- .applyolim(ci.lb, olim)
ci.ub <- .applyolim(ci.ub, olim)
}
#########################################################################
if (!is.null(at)) {
if (anyNA(at))
stop(mstyle$stop("Argument 'at' cannot contain NAs."))
if (any(is.infinite(at)))
stop(mstyle$stop("Argument 'at' cannot contain +-Inf values."))
}
### set x-axis limits (at argument overrides alim argument)
alim.spec <- TRUE
if (missing(alim)) {
if (is.null(at)) {
alim <- range(pretty(x=c(min(ci.lb, na.rm=TRUE), max(ci.ub, na.rm=TRUE)), n=steps-1))
alim.spec <- FALSE
} else {
alim <- range(at)
}
}
alim <- sort(alim)[1:2]
if (anyNA(alim))
stop(mstyle$stop("Argument 'alim' cannot contain NAs."))
### generate x-axis positions if none are specified
if (is.null(at)) {
if (alim.spec) {
at <- seq(from=alim[1], to=alim[2], length.out=steps)
} else {
at <- pretty(x=c(min(ci.lb, na.rm=TRUE), max(ci.ub, na.rm=TRUE)), n=steps-1)
}
} else {
at[at < alim[1]] <- alim[1] # remove at values that are below or above the axis limits
at[at > alim[2]] <- alim[2]
at <- unique(at)
}
### x-axis labels (apply transformation to axis labels if requested)
if (is.null(ddd$at.lab)) {
at.lab <- at
if (is.function(atransf)) {
if (is.null(targs)) {
at.lab <- fmtx(sapply(at.lab, atransf), digits[[2]], drop0ifint=TRUE)
} else {
at.lab <- fmtx(sapply(at.lab, atransf, targs), digits[[2]], drop0ifint=TRUE)
}
} else {
at.lab <- fmtx(at.lab, digits[[2]], drop0ifint=TRUE)
}
} else {
at.lab <- ddd$at.lab
}
### set plot limits (xlim)
ncol.ilab <- ifelse(is.null(ilab), 0, ncol(ilab))
if (slab.null) {
area.slab <- 25
} else {
area.slab <- 40
}
if (annotate) {
area.anno <- 25
} else {
area.anno <- 10
}
iadd <- 5
area.slab <- area.slab + iadd*ncol.ilab
#area.anno <- area.anno
area.forest <- 100 + iadd*ncol.ilab - area.slab - area.anno
area.slab <- area.slab / (100 + iadd*ncol.ilab)
area.anno <- area.anno / (100 + iadd*ncol.ilab)
area.forest <- area.forest / (100 + iadd*ncol.ilab)
plot.multp.l <- area.slab / area.forest
plot.multp.r <- area.anno / area.forest
if (missing(xlim)) {
if (min(ci.lb, na.rm=TRUE) < alim[1]) {
f.1 <- alim[1]
} else {
f.1 <- min(ci.lb, na.rm=TRUE)
}
if (max(ci.ub, na.rm=TRUE) > alim[2]) {
f.2 <- alim[2]
} else {
f.2 <- max(ci.ub, na.rm=TRUE)
}
rng <- f.2 - f.1
xlim <- c(f.1 - rng * plot.multp.l, f.2 + rng * plot.multp.r)
xlim <- round(xlim, digits[[2]])
#xlim[1] <- xlim[1]*max(1, digits[[2]]/2)
#xlim[2] <- xlim[2]*max(1, digits[[2]]/2)
} else {
if (length(xlim) != 2L)
stop(mstyle$stop("Argument 'xlim' must be of length 2."))
}
xlim <- sort(xlim)
### plot limits must always encompass the yi values (no longer done)
#if (xlim[1] > min(yi, na.rm=TRUE)) { xlim[1] <- min(yi, na.rm=TRUE) }
#if (xlim[2] < max(yi, na.rm=TRUE)) { xlim[2] <- max(yi, na.rm=TRUE) }
### x-axis limits must always encompass the yi values (no longer done)
#if (alim[1] > min(yi, na.rm=TRUE)) { alim[1] <- min(yi, na.rm=TRUE) }
#if (alim[2] < max(yi, na.rm=TRUE)) { alim[2] <- max(yi, na.rm=TRUE) }
### plot limits must always encompass the x-axis limits (no longer done)
#if (alim[1] < xlim[1]) { xlim[1] <- alim[1] }
#if (alim[2] > xlim[2]) { xlim[2] <- alim[2] }
### allow adjustment of position of study labels and annotations via textpos argument
textpos <- .chkddd(ddd$textpos, xlim)
if (length(textpos) != 2L)
stop(mstyle$stop("Argument 'textpos' must be of length 2."))
if (is.na(textpos[1]))
textpos[1] <- xlim[1]
if (is.na(textpos[2]))
textpos[2] <- xlim[2]
### set y-axis limits
if (missing(ylim)) {
ylim <- c(0, max(rows, na.rm=TRUE)+top)
} else {
if (length(ylim) == 1L) {
ylim <- c(ylim, max(rows, na.rm=TRUE)+top)
} else {
ylim <- sort(ylim)
}
}
#########################################################################
### set/get fonts (1st for study labels, 2nd for annotations, 3rd for ilab)
### when passing a named vector, the names are for 'family' and the values are for 'font'
if (missing(fonts)) {
fonts <- rep(par("family"), 3L)
} else {
if (length(fonts) == 1L)
fonts <- rep(fonts, 3L)
if (length(fonts) == 2L)
fonts <- c(fonts, fonts[1])
}
if (is.null(names(fonts)))
fonts <- setNames(c(1L,1L,1L), nm=fonts)
par(family=names(fonts)[1], font=fonts[1])
### adjust margins
par.mar <- par("mar")
par.mar.adj <- par.mar - c(0,3,1,1)
par.mar.adj[par.mar.adj < 0] <- 0
par(mar = par.mar.adj)
on.exit(par(mar = par.mar), add=TRUE)
### start plot
lplot(NA, NA, xlim=xlim, ylim=ylim, xlab="", ylab="", yaxt="n", xaxt="n", xaxs="i", yaxs="i", bty="n", ...)
if (shade.type == "character") {
if (shade == "zebra" || shade == "zebra1")
tmp <- rep_len(c(TRUE,FALSE), k)
if (shade == "zebra2")
tmp <- rep_len(c(FALSE,TRUE), k)
if (shade == "all")
tmp <- rep_len(TRUE, k)
shade <- tmp
}
if (shade.type %in% c("character","logical")) {
for (i in seq_len(k)) {
if (shade[i])
rect(xlim[1], rows[i]-0.5, xlim[2], rows[i]+0.5, border=colshade, col=colshade)
}
}
if (shade.type == "numeric") {
for (i in seq_along(shade)) {
rect(xlim[1], shade[i]-0.5, xlim[2], shade[i]+0.5, border=colshade, col=colshade)
}
}
### horizontal title line
labline(h=ylim[2]-(top-1), lty=lty[2], ...)
### get coordinates of the plotting region
par.usr <- par("usr")
### add reference line
if (is.numeric(refline))
lsegments(refline, par.usr[3], refline, ylim[2]-(top-1), lty="dotted", ...)
### set cex, cex.lab, and cex.axis sizes as a function of the height of the figure
height <- par.usr[4] - par.usr[3]
if (is.null(cex)) {
lheight <- strheight("O")
cex.adj <- ifelse(k * lheight > height * 0.8, height/(1.25 * k * lheight), 1)
}
if (is.null(cex)) {
cex <- par("cex") * cex.adj
} else {
if (is.null(cex.lab))
cex.lab <- par("cex") * cex
if (is.null(cex.axis))
cex.axis <- cex
}
if (is.null(cex.lab))
cex.lab <- par("cex") * cex.adj
if (is.null(cex.axis))
cex.axis <- par("cex") * cex.adj
### add x-axis
laxis(side=1, at=at, labels=at.lab, cex.axis=cex.axis, ...)
### add x-axis label
if (missing(xlab))
xlab <- .setlab(measure, transf.char, atransf.char, gentype=2)
if (!is.element(length(xlab), 1:3))
stop(mstyle$stop("Argument 'xlab' argument must be of length 1, 2, or 3."))
if (length(xlab) == 1L)
lmtext(xlab, side=1, at=min(at) + (max(at)-min(at))/2, line=par("mgp")[1]-0.5, cex=cex.lab, font=xlabfont[1], ...)
if (length(xlab) == 2L) {
lmtext(xlab[1], side=1, at=min(at), line=par("mgp")[1]-0.5, cex=cex.lab, adj=xlabadj[1], font=xlabfont[1], ...)
lmtext(xlab[2], side=1, at=max(at), line=par("mgp")[1]-0.5, cex=cex.lab, adj=xlabadj[2], font=xlabfont[1], ...)
}
if (length(xlab) == 3L) {
lmtext(xlab[1], side=1, at=min(at), line=par("mgp")[1]-0.5, cex=cex.lab, adj=xlabadj[1], font=xlabfont[1], ...)
lmtext(xlab[2], side=1, at=min(at) + (max(at)-min(at))/2, line=par("mgp")[1]-0.5, cex=cex.lab, font=xlabfont[2], ...)
lmtext(xlab[3], side=1, at=max(at), line=par("mgp")[1]-0.5, cex=cex.lab, adj=xlabadj[2], font=xlabfont[1], ...)
}
### add CI ends (either | or <> if outside of axis limits)
ciendheight <- height / 150 * cex * efac[1]
arrowwidth <- 1.4 / 100 * cex * (xlim[2]-xlim[1])
arrowheight <- height / 150 * cex * efac[2]
for (i in seq_len(k)) {
### need to skip missings (if check below will otherwise throw an error)
if (is.na(yi[i]) || is.na(vi[i]))
next
### if the lower bound is actually larger than upper x-axis limit, then everything is to the right and just draw a polygon pointing in that direction
if (ci.lb[i] >= alim[2]) {
lpolygon(x=c(alim[2], alim[2]-arrowwidth, alim[2]-arrowwidth, alim[2]),
y=c(rows[i], rows[i]+arrowheight, rows[i]-arrowheight, rows[i]), col=col[i], border=col[i], ...)
next
}
### if the upper bound is actually lower than lower x-axis limit, then everything is to the left and just draw a polygon pointing in that direction
if (ci.ub[i] <= alim[1]) {
lpolygon(x=c(alim[1], alim[1]+arrowwidth, alim[1]+arrowwidth, alim[1]),
y=c(rows[i], rows[i]+arrowheight, rows[i]-arrowheight, rows[i]), col=col[i], border=col[i], ...)
next
}
lsegments(max(ci.lb[i], alim[1]), rows[i], min(ci.ub[i], alim[2]), rows[i], lty=lty[1], col=col[i], ...)
if (ci.lb[i] >= alim[1]) {
lsegments(ci.lb[i], rows[i]-ciendheight, ci.lb[i], rows[i]+ciendheight, col=col[i], ...)
} else {
lpolygon(x=c(alim[1], alim[1]+arrowwidth, alim[1]+arrowwidth, alim[1]),
y=c(rows[i], rows[i]+arrowheight, rows[i]-arrowheight, rows[i]), col=col[i], border=col[i], ...)
}
if (ci.ub[i] <= alim[2]) {
lsegments(ci.ub[i], rows[i]-ciendheight, ci.ub[i], rows[i]+ciendheight, col=col[i], ...)
} else {
lpolygon(x=c(alim[2], alim[2]-arrowwidth, alim[2]-arrowwidth, alim[2]),
y=c(rows[i], rows[i]+arrowheight, rows[i]-arrowheight, rows[i]), col=col[i], border=col[i], ...)
}
}
### add study labels on the left
ltext(textpos[1], rows+rowadj[1], slab, pos=4, cex=cex, col=col, ...)
### add info labels
if (!is.null(ilab)) {
if (is.null(ilab.xpos)) {
#stop(mstyle$stop("Must specify 'ilab.xpos' argument when adding information with 'ilab'."))
dist <- min(ci.lb, na.rm=TRUE) - xlim[1]
if (ncol.ilab == 1L)
ilab.xpos <- xlim[1] + dist*0.75
if (ncol.ilab == 2L)
ilab.xpos <- xlim[1] + dist*c(0.65, 0.85)
if (ncol.ilab == 3L)
ilab.xpos <- xlim[1] + dist*c(0.60, 0.75, 0.90)
if (ncol.ilab >= 4L)
ilab.xpos <- seq(xlim[1] + dist*0.5, xlim[1] + dist*0.9, length.out=ncol.ilab)
}
if (length(ilab.xpos) != ncol.ilab)
stop(mstyle$stop(paste0("Number of 'ilab' columns (", ncol.ilab, ") does not match length of 'ilab.xpos' argument (", length(ilab.xpos), ").")))
if (!is.null(ilab.pos) && length(ilab.pos) == 1L)
ilab.pos <- rep(ilab.pos, ncol.ilab)
if (!is.null(ilab.lab) && length(ilab.lab) != ncol.ilab)
stop(mstyle$stop(paste0("Number of 'ilab' columns (", ncol.ilab, ") does not match length of 'ilab.lab' argument (", length(ilab.lab), ").")))
par(family=names(fonts)[3], font=fonts[3])
for (l in seq_len(ncol.ilab)) {
ltext(ilab.xpos[l], rows+rowadj[3], ilab[,l], pos=ilab.pos[l], cex=cex, ...)
if (!is.null(ilab.lab))
ltext(ilab.xpos[l], ylim[2]-(top-1)+1+rowadj[3], ilab.lab[l], pos=ilab.pos[l], font=2, cex=cex, ...)
}
par(family=names(fonts)[1], font=fonts[1])
}
### add study annotations on the right: yi [LB, UB]
if (annotate) {
if (is.function(atransf)) {
if (is.null(targs)) {
annotext <- cbind(sapply(yi, atransf), sapply(ci.lb, atransf), sapply(ci.ub, atransf))
} else {
annotext <- cbind(sapply(yi, atransf, targs), sapply(ci.lb, atransf, targs), sapply(ci.ub, atransf, targs))
}
### make sure order of intervals is always increasing
tmp <- .psort(annotext[,2:3])
annotext[,2:3] <- tmp
} else {
annotext <- cbind(yi, ci.lb, ci.ub)
}
annotext <- fmtx(annotext, digits[[1]])
if (missing(width)) {
width <- apply(annotext, 2, function(x) max(nchar(x)))
} else {
width <- .expand1(width, ncol(annotext))
if (length(width) != ncol(annotext))
stop(mstyle$stop(paste0("Length of 'width' argument (", length(width), ") does not the match number of annotation columns (", ncol(annotext), ").")))
}
for (j in seq_len(ncol(annotext))) {
annotext[,j] <- formatC(annotext[,j], width=width[j])
}
annotext <- cbind(annotext[,1], annosym[1], annotext[,2], annosym[2], annotext[,3], annosym[3])
annotext <- apply(annotext, 1, paste, collapse="")
annotext[grepl("NA", annotext, fixed=TRUE)] <- ""
annotext <- gsub("-", annosym[4], annotext, fixed=TRUE) # [a]
annotext <- gsub(" ", annosym[5], annotext, fixed=TRUE)
par(family=names(fonts)[2], font=fonts[2])
ltext(textpos[2], rows+rowadj[2], labels=annotext, pos=2, cex=cex, col=col, ...)
par(family=names(fonts)[1], font=fonts[1])
} else {
width <- NULL
}
### add yi points
for (i in seq_len(k)) {
### need to skip missings (if check below will otherwise throw an error)
if (is.na(yi[i]))
next
if (yi[i] >= alim[1] && yi[i] <= alim[2])
lpoints(x=yi[i], y=rows[i], pch=pch[i], cex=cex*psize[i], col=col[i], ...)
}
### add header
ltext(textpos[1], ylim[2]-(top-1)+1+rowadj[1], header.left, pos=4, font=2, cex=cex, ...)
ltext(textpos[2], ylim[2]-(top-1)+1+rowadj[2], header.right, pos=2, font=2, cex=cex, ...)
#########################################################################
### return some information about plot invisibly
res <- list(xlim=par("usr")[1:2], alim=alim, at=at, ylim=ylim, rows=rows,
cex=cex, cex.lab=cex.lab, cex.axis=cex.axis,
ilab.xpos=ilab.xpos, ilab.pos=ilab.pos, textpos=textpos)
### put some additional stuff into .metafor, so that it can be used by addpoly()
sav <- c(res, list(level=level, annotate=annotate, digits=digits[[1]], width=width,
transf=transf, atransf=atransf, targs=targs,
fonts=fonts[1:2], annosym=annosym))
try(assign("forest", sav, envir=.metafor), silent=TRUE)
invisible(res)
}
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