Description Usage Arguments Details Value
Restricts a CMBDataFrame
, CMBDat
object,
or data.frame
to a CMBWindow
region.
A single CMBWindow or a list of CMBWindows can be passed to the win
argument.
1 
cmbdf 
a 
win 
a 
intersect 
a boolean that determines
the behaviour when 
in.pixels 
a vector of pixels at resolution

in.pixels.res 
a resolution
(i.e., j such that nside = 
Windows that are tagged with set.minus
(see CMBWindow
)
are treated differently from other windows.
If the argument is a list of CMBWindows, then interiors of all windows whose
winType does not include "minus" are united (let A be their union) and
exteriors of all windows whose winType does include "minus" are intersected,
(let B be their intersection). Then, provided that
intersect = TRUE
(the default), the returned CMBDataFrame will
be the points of cmbdf
in the the intersection of A and B.
Otherwise, if intersect = FALSE
, the returned CMBDataFrame
consists of the points of cmbdf
in the union of
A and B.
Note that if A (resp. B) is empty then the returned CMBDataFrame
will be the points of cmbdf
in B (resp. A).
a CMBDataFrame, HPDataFrame, or just a data.frame,
which is restricted to the
region of the sky specified by win
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