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### library(metafor); library(testthat); Sys.setenv(NOT_CRAN="true")
### see also: https://www.metafor-project.org/doku.php/plots:plot_of_cumulative_results
source("settings.r")
context("Checking plots example: plot of cumulative results")
test_that("plot can be drawn.", {
expect_equivalent(TRUE, TRUE) # avoid 'Empty test' message
skip_on_cran()
png("images/test_plots_plot_of_cumulative_results_test.png", res=200, width=1800, height=1600, type="cairo")
### decrease margins so the more space is used
par(mar=c(5,5,2,2))
### calculate log risk ratios and corresponding sampling variances
dat <- escalc(measure="RR", ai=tpos, bi=tneg, ci=cpos, di=cneg, data=dat.bcg)
### fit random-effects models
res <- rma(yi, vi, data=dat)
### cumulative meta-analysis (in the order of publication year)
tmp <- cumul(res, order=year)
### plot of cumulative results
plot(tmp, transf=exp, xlim=c(0.25,0.5), lwd=3, cex=1.3)
dev.off()
expect_true(.vistest("images/test_plots_plot_of_cumulative_results_test.png", "images/test_plots_plot_of_cumulative_results.png"))
})
rm(list=ls())
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