search for: rahmank

Dear All, I'm trying to save a dataframe using write.table command. It works, but when I retrieved, there's an error message as shown below: > write.table(soil.dat,file="C:/soil.rdata") > load("C:/soil.rdata") Error: bad restore file magic number (file may be corrupted)-- no data loaded I can figure out the error message. Any assistance to solve the

Dear All, I'm trying to attach a legend outside the plot (Inside plot OK), but failed. Any help is very much appreciated. Thanks. Abd. Rahman Kassim, PhD Forest Management & Ecology Program Forestry & Conservation Division Forest Research Institute Malaysia Kepong 52109 Selangor MALAYSIA ***************************************** Checked by TrendMicro Interscan Messaging Security.

Dear All, I've tried to add axis limit ( e.g. ylim=c(0,50)) to the log-log plot, but it turn out to be error (see below). Any solution is much appreciated. > plot(maxsd$tph,maxsd$qdbh,log="xy",xlab="Stand density(trees per ha)",ylab="Quadratic mean dbh (cm)",ylim=c(0,50)) Error in plot.window(xlim, ylim, log, asp, ...) : Infinite axis extents

Dear All, How can I sort a data frame (using one of the column)? Thanks for your support. Regards. Abd. Rahman Kassim (PhD) Head Forest Ecology Branch Forest Management & Ecology Program Forestry and Conservation Division Forest Research Institute Malaysia Kepong 52109 Selangor, Malaysia ***************************************** Checked by TrendMicro Interscan Messaging Security. For any

Dear All, Need some help in polynomials transformation to get the coefficients. I have tried "poly.transform" as applied in S-plus but it does not work. Thanks in advanced for any helps. Regards. Abd. Rahman Kassim (PhD) Head Forest Ecology Branch Forest Management & Ecology Program Forestry and Conservation Division Forest Research Institute Malaysia Kepong 52109 Selangor,

Dear R-User, Appreciate any helps. It looks simple, but I don't have a clue. Given that I have a dataframe of tree population with three variables: sp=species , d0=initial_size grow=growth increment from initial size per year How can I calculate the future growth increment of each tree for the next 3 years. The following Rscript was written, #---------- a0 <-

Dear All, I have a question on overlaying a filled.contour (e.g. on soil properties data) and contour (by elevation) in one graph. Both have the same z matrix dimension. I'm able to overlay both graph, but the plots dimension did not overlap well on the same plots. How can I have both filled.contour and contour on the same graph? The commands that I have written are as follows: