Here is some code that may get you started (if I am understanding your question correctly):
library(TeachingDemos) myfunc <- function(zmin=90, zmax=195, ncol=100, pal='heat') { cols <- switch(pal, heat=heat.colors(ncol), terrain=terrain.colors(ncol), topo=topo.colors(ncol), cm=cm.colors(ncol) ) image(volcano, col=cols, zlim=c(zmin,zmax)) } mylist <- list( zmin=list('slider',from=0, to=90, init=90, resolution=5), zmax=list('slider',from=195, to=250, init=195, resolution=5), ncol=list('spinbox', init=100, from=2, to=150, increment=5), pal=list('radiobuttons', values=c('heat','terrain','topo','cm'), init='heat')) tkexamp(myfunc,mylist) hope this helps, -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of Abelian > Sent: Thursday, March 26, 2009 9:43 PM > To: r-help@r-project.org > Subject: [R] interactive image graphic > > Dear All > I want to plot a kind of figures, which can interactive with user. > For example, i have a matirx which can be showed by image function. > i.e. we can compare the value depend on different colors. > However, the change of colors depend on the range of value. > Nowaday, i want to set a bar, which can be moved by user such that the > user can obtain the appropriate range. > Does anyone suggest me which function can be applied to solve this > problem? > Thanks > > ______________________________________________ > 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.