lintransform | R Documentation |
These functions perform straightforward linear transformations on the generators of a zonotope, and the column vectors of a vector matroid
## S3 method for class 'zonohedron'
lintransform( x, W )
## S3 method for class 'zonogon'
lintransform( x, W )
## S3 method for class 'matroid'
lintransform( x, W )
x |
|
W |
An invertible matrix that matches the rank of |
If x
is a zonohedron (or zonogon),
lintransform(x)
returns the zonohedron (or zonogon)
whose generators are the generators of x
with the matrix
W
applied on the left side.
This function is optimized - it is not necessary
to transform the generators and start all over again.
If x
is a vector matroid, lintransform(x)
returns the matroid
whose generators are the generators of x
with the matrix
W
applied on the left side.
If x
is a matroid, but *not* a vector matroid,
it returns the original matroid and prints a warning message.
In case of error, e.g. invalid W
,
the function prints an error message and returns NULL
.
Matroid - Wikipedia. https://en.wikipedia.org/w/index.php?title=Matroid&oldid=1086234057
rank()
,
matroid()
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