block_sum | R Documentation |
Returns of a sum of a block within a matrix
. This function is predominantly intended to be used within the ipf2_block
routine.
block_sum(block = NULL, m = NULL, block_id = NULL)
block |
Numeric value of block to summed. To be matched against the matrix in |
m |
Matrix of all blocks combined. |
block_id |
Matrix of the same dimensions of |
Returns a numeric value of the sum of a single block.
Guy J. Abel
block_matrix
, stripe_matrix
, ipf2_block
m <- matrix(data = 100:220, nrow = 11, ncol = 11)
b <- block_matrix(x = 1:16, b = c(2, 3, 4, 2))
block_sum(block = 1, m = m, block_id = b)
block_sum(block = 4, m = m, block_id = b)
block_sum(block = 16, m = m, block_id = b)
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