densityGridDS {dsGraphics}  R Documentation 
Generates a density grid that can then be used for heatmap or countour plots.
densityGridDS(xvect, yvect, limits = FALSE, x.min = NULL, x.max = NULL, y.min = NULL, y.max = NULL, numints = 20)
xvect 
a numerical vector 
yvect 
a numerical vector 
limits 
a logical expression for whether or not
limits of the density grid are defined by a user If

x.min 
a minimum value for the x axis of the grid density object, if needed 
x.max 
a maximum value for the x axis of the grid density object, if needed 
y.min 
a minimum value for the y axis of the grid density object, if needed 
y.max 
a maximum value for the y axis of the grid density object, if needed 
numints 
a number of intervals for the grid density object, by default is 20 
Invalid cells (cells with count < to the set filter value) are turn to 0.
a grid density matrix
Isaeva, J. and Gaye, A.