lines()

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lines()

wdmc
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I have some latitude and longitudes that I am trying to plot on an image with the lines() command like this:

image(seq(-98, -93, 0.1), seq(28.5, 32.5, 0.1), z, xlab= "Longitude", ylab= "Latitude", main= "Temperature")
for (i in 2:length(subset(geo, Feature=="Coast")[,1])) {
lines(x=geo[(i-1),2]:geo[i,2], y=geo[(i-1),1]:geo[i,1], col="blue", lwd=3) }

There aren't any errors, but nothing shows up on the plot. I tried substituting "points" for "lines" and all the points came up exactly where they need to be, but how can I make it work with "lines"?