Is diag in r?

2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07

diag muaj nuj nqi hauv R Lus yog siv los tsim cov kab pheeb ces kaum. Parameters: x: tus nqi tam sim no raws li cov kab pheeb ces kaum. nrow, ncol: tus naj npawb ntawm kab thiab kab hauv cov ntsiab lus sawv cev.

Yuav ua li cas koj ua tus diag matrix hauv R?

Matrix Diagonals

1. Kev piav qhia. Extract los yog hloov cov kab pheeb ces kaum ntawm lub matrix, los yog tsim ib kab pheeb ces kaum matrix.
2. Kev siv. diag(x=1, nrow, ncol, names=TRUE) diag(x) <- value.
3. Cov lus. x. …
4. Txoj kev. Diag muaj plaub qhov kev siv sib txawv: …
5. Vim. Yog tias x yog matrix ces diag(x) rov qab kab pheeb ces kaum ntawm x. …
6. Note. …
7. References. …
8. Saib ntxiv.

Diag txhais li cas hauv matrices?

diag(a) tsim a vector uas muaj kab pheeb ces kaum a[1, 1], a[2, 2], … ntawm matrix a, uas tsis xav tau ua square. Qhov ntev ntawm qhov tshwm sim yog min(nrows(a), ncols(a)). Matrix a tej zaum yuav muaj tiag (feem ntau), LOGICAL lossis CHARACTER.

Diag hauv lej yog dab tsi?

Tsim a kab pheeb ces kaumlos yog khaws cov kab pheeb ces kaum ntawm matrix. Thaum x yog vector, matrix nrog vector x ntawm kab pheeb ces kaum yuav raug xa rov qab. Thaum x yog ob seem matrix, matrixes k th kab pheeb ces kaum yuav rov qab los ua vector.

Koj hloov kab pheeb ces kaum ntawm matrix hauv R?

In R: Hloov kab pheeb ces kaum ntawm matrices siv lapply

1. w <- matrix(rnorm(25), 5) t <- matrix(seq(1, 25, 1), 5) s <- list(w, t)
2. diag(s[1]) <- rep(0, 5) diag(s[2]) <- rep(0, 5)
3. lapply(1:2, function(i){diag(s) <- rep(0, nrow(s))})