substValue | R Documentation |
Replace a variable by a value in a set of edits.
substValue(E, var, value, ...)
## S3 method for class 'editmatrix'
substValue(E, var, value, reduce = FALSE, removeredundant = TRUE, ...)
## S3 method for class 'editarray'
substValue(E, var, value, reduce = FALSE, ...)
## S3 method for class 'editset'
substValue(E, var, value, simplify = TRUE, ...)
## S3 method for class 'editlist'
substValue(E, var, value, ...)
## S3 method for class 'editenv'
substValue(E, var, value, ...)
E |
|
var |
|
value |
vector with value(s) of variable(s) |
... |
arguments to be passed to or from other methods |
reduce |
|
removeredundant |
|
simplify |
Simplify editset by moving logical edits containing a single numerical statement to the pure numerical part? (This is mostly for internal purposes and overwriting the default should normally not be necessary for package users). |
E
, with variables replaced by values
At the moment, objects of class editenv
are converted to list
prior to processing (so no performance is gained there) and reconverted afterwards.
Value substitution is extensively described in the package vignettes.
eliminate
E <- editmatrix(expression(
x + y == z,
2*y < 10,
3*x + 1.5*u < 7,
z >= 0
)
)
# single value
substValue(E,'z',10)
# multiple values
substValue(E,c('x','y'),c(1,3))
# remove substituted variable from edits
substValue(E,'z',10,reduce=TRUE)
# do not remove redundant row:
substValue(E,'z',10,removeredundant=FALSE)
# example with an editset
E <- editset(expression(
x + y == z,
x >= 0,
y >= 0,
A %in% c('a1','a2'),
B %in% c('b1','b2'),
if ( x > 0 ) y > 0,
if ( y > 0 ) x > 0,
if ( A == 'a' ) B == 'b',
if ( A == 'b' ) y > 3
)
)
# substitute pure numerical variable
substValue(E,'z',10)
# substitute pure categorical variable
substValue(E,'A','a1')
# substitute variable appearing in logical constraints
substValue(E,'x',3)
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