Function to convert data.frame to ppp object

Assumes that the data.frame is the output of .SPE2df(). Column order is important!

Usage

.df2ppp(df, xName, yName, marks = NULL)

Arguments

df

data.frame; with x, y coordinates, image, and categorical mark information.

xName

character; column name of x coordinate

yName

character; column name of y coordinate

marks

character; column name of the mark variable

Value

ppp; object of type ppp

See also

.SPE2df, as.ppp

Examples

data(sostaSPE)
df <- .SPE2df(sostaSPE, marks = "cellType", imageCol = "imageName")
ppp <- .df2ppp(df, xName = "x", yName = "y", marks = "cellType")