Generate vector with color values for plot objects (lines, points, bars), depending on number of groups for the objects.
mdaplot.getColors(ngroups = 1, cgroup = NULL, colmap = "default",
opacity = 1)number of groups.
vector of values, used for color grouping of plot points or lines.
which colormap to use ('default', 'gray', or user defined in form c('color1', 'color2', ...)).
opacity for colors (between 0 and 1)
Returns vector with generated color values