rowSumsCrossprod: Apply crossprod and rowSums
In riskRegression: Risk Regression Models and Prediction Scores for Survival Analysis with Competing Risks
rowSumsCrossprod R Documentation
Apply crossprod and rowSums
Description
Fast computation of crossprod(rowSums(X),Y)
Usage
rowSumsCrossprod(X, Y, transposeY)
Arguments
X
A matrix with dimensions n*k. Hence the result of rowSums(X) has length n.
Y
A matrix with dimenions n*m. Can be a matrix with dimension m*n but then transposeY should be TRUE.
transposeY
Logical. If TRUE transpose Y before matrix multiplication.
Value
A vector of length m.
Author(s)
Thomas Alexander Gerds <tag@biostat.ku.dk>
Examples
x <- matrix(1:10,nrow=5)
y <- matrix(1:20,ncol=4)
rowSumsCrossprod(x,y,0)
x <- matrix(1:10,nrow=5)
y <- matrix(1:20,ncol=5)
rowSumsCrossprod(x,y,1)
riskRegression documentation built on May 29, 2024, 10:59 a.m.
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| rowSumsCrossprod | R Documentation |
Apply crossprod and rowSums
Description
Fast computation of crossprod(rowSums(X),Y)
Usage
rowSumsCrossprod(X, Y, transposeY)
Arguments
X |
A matrix with dimensions n*k. Hence the result of |
Y |
A matrix with dimenions n*m. Can be a matrix with dimension m*n but then |
transposeY |
Logical. If |
Value
A vector of length m.
Author(s)
Thomas Alexander Gerds <tag@biostat.ku.dk>
Examples
x <- matrix(1:10,nrow=5)
y <- matrix(1:20,ncol=4)
rowSumsCrossprod(x,y,0)
x <- matrix(1:10,nrow=5)
y <- matrix(1:20,ncol=5)
rowSumsCrossprod(x,y,1)
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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