search for: basin_slop

...anges). Full code follows, xyplot code at bottom #########Determine Frequencies ##########coastal_slope #needs the maptools package to read ESRI grid require(maptools) #import the flow slope grid basin.map <- readAsciiGrid("C:/R_PLots/coastal_slp.asc", colname="slope") basin_slope <- (basin.map$slope) #read the slopes into a dataframe freqs<-as.data.frame(table(basin_slope)) #rank the frequencies based on each unique occerence, note, ranks from 1 to n r<-rank(freqs$basin_slope) n<-length(r) #determing the probability, n+1 insures there is no 100%, 1- reverses th...