draw.vario {RGeostats}  R Documentation 
Elementary function for representing the variogram
draw.vario(x, ivar = 1, jvar = 1, idir0 = 0, xlim=NA, ylim=NA, npairdw = 0, npairpt = 0, flag.norm = FALSE, as.cov = FALSE, pch = NA, lty = NA, col = NA, lwd = NA, c0col = 1, c0lwd = 1, c0lty = 2, c0cex = 1, pos = 3, offset = 1, inches=0.025, add = FALSE, varline = TRUE, opt.varname=0, cex.varname=1, pos.varname=c(1,0), pos.legend = 0, ...)
x 
The 
ivar 
The first variable in the pair of variables for which the model must be represented. 
jvar 
The second variable in the pair of variables for which the model must be represented. 
idir0 
Rank of the direction of interest or 0 for all directions. 
xlim 
An array of two values giving the minimum and maximum values along the horizontal axis. 
ylim 
An array of two values giving the minimum and maximum values along the vertical axis. 
npairdw 
Representation of each lag by a symbol according to the following choice:

npairpt 
Display the number of pairs. The number of pairs is indicated for one out of 
flag.norm 
If TRUE, the variogram is normalized by the variable variance before it is represented. 
as.cov 
If TRUE, the structure is represented as a covariance; otherwise it is represented as a variogram. 
pch 
Only used when npairpt=TRUE. Array containing the symbol types (per direction). If the number of items does not match the number of directions, the symbol type is set to 1. 
lty 
Array containing the line types (per direction). If the number of items does not match the number of directions, the line type is set to 1. 
col 
Array containing the line colors (per direction). If the number of items does not match the number of directions, the line color is set to 1. 
lwd 
Array containing the line widths (per direction). If the number of items does not match the number of directions, the line width is set to 1. 
c0col 
Color used for the axes 
c0lwd 
Width used for the axes 
c0lty 
Type of the lines used for the axes 
c0cex 
Size of the symbol representing Cij(0) 
pos 
Position of the labels with respect to the symbol representing the variogram lag (only used when npairpt > 0).

offset 
When variogram is represented with npairpt > 0, this value gives the offset of the label from the symbol representing the variogram lag (in fractions of a character width). 
inches 
Give the size of the symbol for representing the lag with the largest number of pairs. 
add 
When FALSE a new page is initialized before the graphic. Otherwise, the graphic is overlayed on the already existing page. 
varline 
Horizontal line at the sample variance/covariance level This option is automatically discarded in case of generalized variograms. 
opt.varname 
The name of the variable(s) used for calculating the experimental
(simple or cross) variogram is displayed.
For crossvariograms, the two variables names are separated by the ";"
character.
This option is only available is the names have been registered in the
This option can be set to:

cex.varname 
Size of the font used for writing the variable name(s) 
pos.varname 
This argument is used to position the anchor of the variable name(s) to be written. It is provided as an array with two values. Each element may vary between 0 and 1.
The location of the anchor with respect to the contents of the string is calculated as a function of the anchor location:

pos.legend 
Position of the legend. For more information, see 
... 
Additional arguments passed to 