matsbyname (version 0.6.11)

quotient_byname: Name-wise matrix element division

Description

Element-wise division of two matrices.

Usage

quotient_byname(dividend, divisor)

Value

A matrix representing the name-wise element quotient of dividend and divisor

Arguments

dividend

Dividend matrix or constant

divisor

Divisor matrix or constant

Details

Performs a union and sorting of names of rows and columns for both dividend and divisor prior to element division. Zeroes are inserted for missing matrix elements. Doing so ensures that the dimensions of the dividend and divisor will be conformable.

Examples

library(dplyr)
quotient_byname(100, 50)
commoditynames <- c("c1", "c2")
industrynames <- c("i1", "i2")
U <- matrix(1:4, ncol = 2, dimnames = list(commoditynames, industrynames)) %>%
  setrowtype("Commodities") %>% setcoltype("Industries")
G <- matrix(rev(1:4), ncol = 2, dimnames = list(rev(commoditynames), rev(industrynames))) %>%
  setrowtype("Commodities") %>% setcoltype("Industries")
U / G # Non-sensical.  Names aren't aligned
quotient_byname(U, G)
quotient_byname(U, 10)
quotient_byname(10, G)
# This also works with lists
quotient_byname(10, list(G,G))
quotient_byname(list(G,G), 10)
quotient_byname(list(U, U), list(G, G))
DF <- data.frame(U = I(list()), G = I(list()))
DF[[1,"U"]] <- U
DF[[2,"U"]] <- U
DF[[1,"G"]] <- G
DF[[2,"G"]] <- G
quotient_byname(DF$U, DF$G)
DF %>% mutate(elementquotients = quotient_byname(U, G))