hcell2xy {hexbin} | R Documentation |
Computes x and y coordinates from hexagon cell id's.
hcell2xy(bin)
bin |
hexbin object |
The hexbin object contains all the needed information. The purpose of this function is to reduce storage. The cost is additional calculation.
A list with two components
x |
|
y |
see in hcell
.
x <- rnorm(10000) y <- rnorm(10000) bin <- hexbin(x,y) xys <- hcell2xy(bin) # temporal trends with confidence bounds plotted on a map # Illustration only pending access to user functions. # mtapply() #like tapply but for matrices # sens.season.slope() #computes sen's seasonal slope ## This part does not work and commented out #bin <- hcell(dat$x,dat$y) # x and y are in map projection units #newdat < dat[,c('month','year','value')] # extract columns #stats <- mtapply(newdat,bin$cell,sens.season.slope,season=12) #plot(mymap,type='l') # map boundaries in map projection units #xy <- hcell2xy(bin) # x and y coordinates for hexagon cell centers #hray(xy$x, xy$y,val=stat[,1],lower= stat[,2],upper=stat[,3])