fortify.psp | R Documentation |
psp
objectsThis method extracts coordinate and marks data from
psp
objects to a data.frame, so that it can be
plotted with ggplot.
## S3 method for class 'psp' fortify(model, data, ...)
model |
psp object |
data |
not used by this method |
... |
ignored by this method |
data.frame containing at least four columns: x0
, x1
,
y0
and y1
with represent the coordinates of a line segement.
Returned data.frame can also contain multiple other columns depending of
the type of marks associated with the ppp
object
(see ppp
). If mark type is:
vector: a single column with heading marks
will be added.
data.frame: the marks data.frame with be column bound to the output data.frame, where the column headings from the marks data.frame are preserved.
psp
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