Hi all,
I am trying to make a bar plot of observations along a line or specifically a drill hole with the bars widths representing the interval of the observation and the length of the bar the actual data. My data is in the following format:
from(m) to(m) Intensity of silicification 0 1.2 0 1.2 4.0 1 4.0 4.2 3 4.2 5.0 2 5.0 25 1 25.0 30.1 0 30.1 36.2 2 ......
Is the barplot() function what I really want to use?
Thanks for any help.
Phillip J. Allen Consulting Geochemist/Geologist Lima Peru e-mail: [EMAIL PROTECTED]
Phillip,
How about this, which will generate a vertical barplot, a y axis from 0 down to 40 meters and bar widths and colors for each segment varied:
from <- c(0, 1.2, 4.0, 4.2, 5.0, 25.0, 30.1)
to <- c(1.2, 4.0, 4.2, 5.0, 25, 30.1, 36.2)
intensity <- c(0, 1, 3, 2, 1, 0, 2)
barplot(intensity, width = -(to - from),
space = 0, horiz = TRUE, ylim = c(-40, 0))
axis(2, las = 2, labels = c(40, 30, 20, 10, 0))
mtext(side = 2, text = "Hole Depth (m)", line = 3)Hope that helps,
Marc Schwartz
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