compare_mat: Comparison of two matrices

In rCarto/flows: Selections on Flow Matrices, Statistics on Selected Flows, Map and Graph Visualisations

Comparison of two matrices

Description

Compares two matrices of same dimension, with same column and row names.

Usage

compare_mat(mat1, mat2, digits = 0)

Arguments

mat1	A square matrix of flows.
mat2	A square matrix of flows.
digits	An integer indicating the number of decimal places to be used when printing the data.frame in the console (see round).

Value

A data.frame that provides statistics on differences between mat1 and mat2: absdiff are the absolute differences and reldiff are the relative differences (in percent).

Examples

# # Import data
nav <- read.csv(system.file("csv/nav.csv", package = "flows"))
mat <- prepare_mat(x = nav, i = "i", j = "j", fij = "fij")
# Remove the matrix diagonal
diag(mat) <- 0

# Select the first flows
flowSel1 <- select_flows(mat = mat, method = "nfirst", k = 1)

# Select flows greater than 2000
flowSel2 <- select_flows(mat = mat, method = "xfirst", k = 2000)

# Combine selections
flowSel <- mat * flowSel1 * flowSel2

# Compare flow matrices
compare_mat(mat1 = mat, mat2 = flowSel, digits = 1)

rCarto/flows documentation built on May 10, 2024, 11:38 a.m.