define.plot.area {stylo}

Define area for scatterplots

Description

Function that determines the size of a scatterplot, taking into consideration additional margin to fit longer labels appearing on a graph (if applicable), optional margin defined by user, and some space to offset scatterplot labels from points (if applicable).

Usage

define.plot.area(x.coord, y.coord, xymargins = 2, v.offset = 0)

Arguments

x.coord

a vector of x coordinates, optionally with names.

y.coord

a vector of y coordinates.

xymargins

additional margins (expressed as a % of the actual plot area).

v.offset

label offset (expressed as a % of the actual plot area).

Details

Function that finds out the coordinates of scatterplots: it computes the extreme x and y values, adds margins, and optionally extends the top margin if a plot uses sample labels. Automatic margin extension will only take place if the x coordinates are supplemented by their names (i.e. labels of points to be shown on scatterplot).

Author(s)

Maciej Eder

See Also

assign.plot.colors, stylo

Examples

# to determine the plotting area for 4 points:
define.plot.area( c(1,2,3,4), c(-0.001,0.11,-0.023,0.09))

# to determine plot coordinates, taking into consideration 
# the objects' names
my.points = cbind(c(1,2,3,4),c(-0.001,0.11,-0.023,0.09))
rownames(my.points) = c("first","second","third","very_long_fourth")
define.plot.area(my.points[,1], my.points[,2])