Hi look at akima package, especially its function interp.
Petr [EMAIL PROTECTED] [EMAIL PROTECTED] napsal dne 08.11.2007 17:51:21: > Dear friends, > My dataset is like the following: > x y mcpvalue > 0.4603578 0.6247629 1.001 > 0.4603715 0.6247788 1.001 > 0.4603852 0.6247948 1.001 > 0.4110561 0.5664841 0.995 > The x and y variables are unsorted. > I use the function image(x,y,mcpvalue) to generate a plot, but the error > is that "increasing 'x' and 'y' values are expected". So i use > image(x=seq(min(x),max(x)), y=seq(min(y),max(y)),z=as.matrix > (result$mcpvalue)) > to do it again, but there is still an error "dimensions of z are not > length(x)(-1) times length(y)(-1)". > Anybody can show me how to use the image() correctly with the original x/y > unsorted? > Thanks very much. > > > -- > With Kind Regards, > > oooO::::::::: > (..)::::::::: > :\.(:::Oooo:: > ::\_)::(..):: > :::::::)./::: > ::::::(_/:::: > ::::::::::::: > [***********************************************************************] > Zhi Jie,Zhang ,PHD > Tel:+86-21-54237149 > Dept. of Epidemiology,School of Public Health,Fudan University > Address:No. 138 Yi Xue Yuan Road,Shanghai,China > Postcode:200032 > Email:[EMAIL PROTECTED] > Website: www.statABC.com > [***********************************************************************] > oooO::::::::: > (..)::::::::: > :\.(:::Oooo:: > ::\_)::(..):: > :::::::)./::: > ::::::(_/:::: > ::::::::::::: > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org 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-help@r-project.org 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.
