Re: [R] filled.contour and NA's
I'm trying to do a filled.contour plot where some points are labelled as NA. How do I could plot this kind of graphics, so NA points are coloured black, keeping the levels of remaining points. NA's values represent land points (meaningless), and what I want to plot is the levels of a variable over the sea. You can also do this using ggplot, although you don't have quite as much control over the appearance of the contours (you do get more control over other things) install.packages(ggplot, dep=T) library(ggplot) # Set up appropriate data structure dimnames(ene) - list(y, x) names(dimnames(ene)) - c(y, x) enem - melt(ene) p - ggplot(na.omit(enem), aes=list(x=x, y=y, z=value, fill=value)) p - ggtile(p) p - ggcontour(p) scfillgradient(p) scfillgradient(p, low=white, high=blue) Regards, Hadley __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] filled.contour and NA's
On 12/8/06, antonio rodriguez [EMAIL PROTECTED] wrote: Hi Gustaf I'm having the same issue myself. What I've ended up doing is replacing NA's with a big negative value, define levels as one color for negative values, and a regular scale above. How to define 'levels' as one color for negative values and a regular scale above? I don't know how the syntax within the filled.contour function shoul be. BR Antonio Hi Antonio, I just meant something like filled.contours(x,y,x,levels=c(-1,seq(0,1,0.1)),color.palette=heat.colors) This will give a fairly sharp delination for non-valid data, but still using the same palette. If you want a totally distinct color, I suppose you have to define your own palette (And I don't know how to do that) /Gustaf -- email:[EMAIL PROTECTED] tel: +46(0)703051451 address: Kantorsgatan 50:190 75424 Uppsala Sweden __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] filled.contour and NA's
On 11/29/06, antonio rodriguez [EMAIL PROTECTED] wrote: Hi, I'm trying to do a filled.contour plot where some points are labelled as NA. How do I could plot this kind of graphics, so NA points are coloured black, keeping the levels of remaining points. NA's values represent land points (meaningless), and what I want to plot is the levels of a variable over the sea. Hi Antonio, I haven't seen a reply to your question yet, so I'll make a try. I'm having the same issue myself. What I've ended up doing is replacing NA's with a big negative value, define levels as one color for negative values, and a regular scale above. This gives a fairly good separation between what areas contain data, and what doesn't. To make NA's black, I suppose one would have to define your own colour.palette, but I haven't looked into it. Hope this helps, and let me know if you've found a better solution! Best, Gustaf Rydevik __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] filled.contour and NA's
Hi Gustaf I'm having the same issue myself. What I've ended up doing is replacing NA's with a big negative value, define levels as one color for negative values, and a regular scale above. How to define 'levels' as one color for negative values and a regular scale above? I don't know how the syntax within the filled.contour function shoul be. BR Antonio This gives a fairly good separation between what areas contain data, and what doesn't. To make NA's black, I suppose one would have to define your own colour.palette, but I haven't looked into it. Hope this helps, and let me know if you've found a better solution! Best, Gustaf Rydevik __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] filled.contour and NA's
Hi, I'm trying to do a filled.contour plot where some points are labelled as NA. How do I could plot this kind of graphics, so NA points are coloured black, keeping the levels of remaining points. NA's values represent land points (meaningless), and what I want to plot is the levels of a variable over the sea. x-seq(length=21, from=-10, by=.25) y-seq(length=8, from=36, by=.25) filled.contour(x,y,t(ene)) dput(ene,control=all) structure(c(0.941176470588235, 0.705882352941177, 0.588235294117647, 0.470588235294118, 0.588235294117647, 0.588235294117647, 0.588235294117647, 0.705882352941177, 0.647058823529412, 0.823529411764706, 0.588235294117647, 0.588235294117647, 0.529411764705882, 0.647058823529412, 0.588235294117647, 0.764705882352941, 0.823529411764706, 0.764705882352941, 0.647058823529412, 0.705882352941177, 0.529411764705882, 0.647058823529412, 0.529411764705882, 0.529411764705882, 0.705882352941177, 0.647058823529412, 0.764705882352941, 0.705882352941177, 0.529411764705882, 0.705882352941177, 0.647058823529412, 0.411764705882353, 0.88235294117647, 0.823529411764706, 0.764705882352941, 0.764705882352941, 0.705882352941177, 0.647058823529412, 0.529411764705882, 0.529411764705882, 0.764705882352941, 0.941176470588235, 0.941176470588235, 0.88235294117647, 0.722, 0.588235294117647, 0.5625, 0.5, 0.823529411764706, 0.823529411764706, 0.833, 1, 0.529411764705882, 0.909090909090909, 0.818181818181818, 1.33, 0.941176470588235, 0.88235294117647, 0.823529411764706, 0.833, 0.6, NA, NA, NA, 0.705882352941177, 0.88235294117647, 0.823529411764706, 0.722, 0.75, NA, NA, NA, 0.647058823529412, 0.705882352941177, 0.764705882352941, 0.722, 0.5, 1.67, NA, NA, 0.529411764705882, 0.647058823529412, 0.647058823529412, 0.588235294117647, 1.17, 1.5, NA, NA, 0.529411764705882, 0.470588235294118, 0.588235294117647, 0.428571428571429, 1.33, 1.5, NA, NA, 0.470588235294118, 0.470588235294118, 0.529411764705882, 0.727272727272727, 1.67, 1.5, NA, NA, 0.470588235294118, 0.556, 0.588235294117647, 1.17, 1.67, 1.67, NA, NA, 0.611, 0.529411764705882, 0.583, 1.17, 1.17, NA, NA, NA, 0.428571428571429, 0.875, 1.33, 1, 1.33, NA, NA, NA, 0.833, 0.833, 1.5, 1.33, NA, NA, NA, NA, 2.17, 1.67, NA, NA, NA, NA, NA, NA, 1.5, 0.833, 0.5, NA, NA, NA, NA, NA, 0.667, 0.667, 1.17, NA, NA, NA, NA, NA, 0.667, 0.667, 0.667, NA, NA, NA, NA, NA), .Dim = as.integer(c(8, 21))) __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
