Hi,
I would like to colour different areas of a plot.
But I don't know how to do this efficiently.
As an example;
lets say three stimuli were presented in an experiment, alternating, one at a
time.
Now I want to plot time on the x-axis and the plot-area should colour code the
stimulus that was presented at that time interval
(green for stimulus 1, yellow for stimulus 2 etc.)
here an example:
(t = time)
t <- 1:100
bg_colors <- c(rep('green',20), rep('yellow',10), rep('green',20),
rep('red',5), rep('yellow',45))
color_scheme <- data.frame(t, bg_colors)
plot(c(), c(), xlim = c(1,100), ylim=c(-1,1))
rect(xleft = 1, ybottom = -1, xright = 20, ytop = 1, col = 'green', lwd=0)
rect(xleft = 20, ybottom = -1, xright = 30, ytop = 1, col = 'yellow', lwd=0)
…
now how can I do this efficiently based on the color_scheme data-frame and
without having to manually draw all the rectangles as in the example above?
thanks for any suggestions!
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