Generates a density grid with or without a priori defined limits

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
)

Arguments

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 limits is set to "FALSE", min and max of xvect and yvect are used as a range. If limits is set to "TRUE", limits defined by x.min, x.max, y.min and y.max are used.

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

Value

a grid density matrix

Details

Invalid cells (cells with count < to the set filter value for the minimum allowed counts in table cells) are turn to 0.

Author

Julia Isaeva, Amadou Gaye, Demetris Avraam for DataSHIELD Development Team