growth_reg {EconGeo}R Documentation

Generate a matrix of industrial growth by regions from two regions - industries matrices (same matrix composition from two different periods)

Description

This function generates a matrix of industrial growth by regions from two regions - industries matrices (same matrix composition from two different periods)

Usage

growth_reg(mat1, mat2)

Arguments

mat1

An incidence matrix with regions in rows and industries in columns (period 1)

mat2

An incidence matrix with regions in rows and industries in columns (period 2)

Value

A vector of industrial growth by regions from two regions - industries matrices

Author(s)

Pierre-Alexandre Balland p.balland@uu.nl

References

Boschma, R., Balland, P.A. and Kogler, D. (2015) Relatedness and Technological Change in Cities: The rise and fall of technological knowledge in U.S. metropolitan areas from 1981 to 2010, Industrial and Corporate Change 24 (1): 223-250

Boschma, R., Heimeriks, G. and Balland, P.A. (2014) Scientific Knowledge Dynamics and Relatedness in Bio-Tech Cities, Research Policy 43 (1): 107-114

See Also

growth_list, entry_list, exit_list

Examples

## generate a first region - industry matrix with full count (period 1)
set.seed(31)
mat1 <- matrix(sample(0:10, 20, replace = TRUE), ncol = 4)
rownames(mat1) <- c("R1", "R2", "R3", "R4", "R5")
colnames(mat1) <- c("I1", "I2", "I3", "I4")

## generate a second region - industry matrix with full count (period 2)
mat2 <- mat1
mat2[3, 1] <- 8


## run the function
growth_reg(mat1, mat2)

[Package EconGeo version 2.0 Index]