gstat (version 0.9-22)

makegrid: make regular grid with square cells and round numbers

Description

make regular grid with square cells and round numbers

Usage

makegrid(x, y, n=10000, nsig=2, margin=1.05, cell.size)

Arguments

x

x-coordinate

y

y-coordinate

n

approximate number of cells in grid

nsig

number of significant digits to which cell size and origin are rounded

margin

margin around the x and y coordinate limits

cell.size

cell size; if missing, a reasonable, and rounded, estimate is made

Value

• data frame with the following elements:
• x
  x-coordinates
• y
  y-coordinate

Examples

data(meuse)
grd <- makegrid(meuse$x, meuse$y, 1000)
diff(grd$x)
diff(grd$y)
summary(grd)
grd <- makegrid(meuse$x, meuse$y, cell.size = 40)
diff(grd$x)
diff(grd$y)
summary(grd)