Do you know what steps I need to take to add a scale to a plot? I'm pulling my example out of "An Introduction to R: Software for StatisticalModelling & Computing" (see the R code around Figure 76). I would like to add a scale to the image produced by the following code.? I would like to the scale to list the distance?and units:? data(volcano) x <- 10*(1:nrow(volcano)) y <- 10*(1:ncol(volcano)) image(x, y, volcano,col = terrain.colors(100),axes = FALSE) contour(x, y, volcano, levels = seq(90, 200, by=5),add = TRUE, col = "peru") axis(1, at = seq(100, 800, by = 100)) axis(2, at = seq(100, 600, by = 100)) box() title(main = "Maunga Whau Volcano",font.main = 4) Thanks for any feedback and insights.
Adding a distance scale to a plot?
3 messages · Jason Rupert, Walmes Zeviani, Jim Lemon
JustADude wrote:
Do you know what steps I need to take to add a scale to a plot? I'm pulling my example out of "An Introduction to R: Software for StatisticalModelling & Computing" (see the R code around Figure 76). I would like to add a scale to the image produced by the following code.? I would like to the scale to list the distance?and units:? data(volcano) x <- 10*(1:nrow(volcano)) y <- 10*(1:ncol(volcano)) image(x, y, volcano,col = terrain.colors(100),axes = FALSE) contour(x, y, volcano, levels = seq(90, 200, by=5),add = TRUE, col = "peru") axis(1, at = seq(100, 800, by = 100)) axis(2, at = seq(100, 600, by = 100)) box() title(main = "Maunga Whau Volcano",font.main = 4) Thanks for any feedback and insights.
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JustADude, Take a look at help documentation of spplot() function on the sp package. This function offer the scale mark on the plot. ----- ..oooO .................................................................................................. ..(....)... 0ooo... Walmes Zeviani ...\..(.....(.....)... Master in Statistics and Agricultural Experimentation ....\_)..... )../.... walmeszeviani at hotmail.com, Lavras - MG, Brasil ............ (_/............................................................................................
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On 01/05/2010 04:12 AM, Jason Rupert wrote:
Do you know what steps I need to take to add a scale to a plot? I'm pulling my example out of "An Introduction to R: Software for StatisticalModelling& Computing" (see the R code around Figure 76). I would like to add a scale to the image produced by the following code. I would like to the scale to list the distance and units:
Hi Jason, The lengthKey function in the plotrix package might be what you need. Jim