add a matrix to a tibble

Asked Feb 01 '21 at 21:07

Active Feb 01 '21 at 21:14

Viewed 20 times

I want to add a new column to an existing tibble, and each element of the new column is a matrix. Here is what I did,

Add it to the tibble WY_reg using list

WY_reg <- WY_reg %>%
           add_column(NewMat = list(Mat1, Mat2,Mat3) )

That indeed adds a new column. However, it seems that when I execute WY_reg$NewMat[1], it returns a list, rather than a matrix, so that I cannot do usual matrix operations.

I also tried as.matrix but fails.

Is there any way I can put a new column and each element is a matrix? so that they can involve later operations? Thanks

edited Feb 01 '21 at 21:14

markus

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asked Feb 01 '21 at 21:07

tobinz

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Just a guess: can you try `WY_reg$NewMat[[1]]` ? – markus Feb 01 '21 at 21:13
It works! Thanks! @markus – tobinz Feb 01 '21 at 21:21
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For context, does `list(Mat1,Mat2,Mat3)[1]` return a list or a matrix? It's the same thing, and https://stackoverflow.com/q/1169456/3358272 is a good reference for it. – r2evans Feb 01 '21 at 21:28

add a matrix to a tibble

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