hexbin (version 1.22.0)

hcell2xy: Compute X and Y Coordinates for Hexagon Cells

Description

Computes x and y coordinates from hexagon cell id's.

Usage

hcell2xy(hbin, check.erosion = TRUE)

Arguments

hbin
a object of class "hexbin", typically produced by hexbin(*).
check.erosion
logical indicating if only the eroded points should be returned in the case where hbin inherits from "erodebin" (see erodebin-class); is TRUE by def

Value

  • A list with two components of the same length as bin$cell,
  • x
  • y

Details

The hexbin object hbin contains all the needed information. The purpose of this function is to reduce storage. The cost is additional calculation.

See Also

hexbin.

Examples

Run this code
x <- rnorm(10000)
y <- rnorm(10000)
plot(x,y, pch=".")
hbin <- hexbin(x,y)
str(xys <- hcell2xy(hbin))
points(xys, cex=1.5, col=2) ; title("hcell2xy( hexbin(..) )", col.main=2)## Temporal trends with confidence bounds plotted on a map:
## <NOT YET> 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
#hbin  <- 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$cell,sens.season.slope,season=12)
#plot(mymap,type='l')       # map boundaries in map projection units
#xy <- hcell2xy(hbin)  # x and y coordinates for hexagon cell centers
#hray(xy$x, xy$y,val=stat[,1],lower= stat[,2],upper=stat[,3])

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