Method for class qmap — methods

A function to plot the difference in frequencies of symbols of each map. The plot() function to obtain the plot. The argument ci select the confidence level.

Arguments

x: object of class qmap
ci: confidence level for the difference of probabilities of symbols in `plot` method. Default ci = 0.95
...: further arguments passed to or from other methods.

References

Ruiz M, López FA and A Páez (2011). Comparison of Thematic Maps Using Symbolic Entropy. International Journal of Geographical Information Science, 26, 413-439.
Ruiz, M., López, F., and Páez, A. (2021). A test for global and local homogeneity of categorical data based on spatial runs. working paper.

Author

Fernando López	fernando.lopez@upct.es
Román Mínguez	roman.minguez@uclm.es
Antonio Páez	paezha@gmail.com
Manuel Ruiz	manuel.ruiz@upct.es

Examples

# Example 1:
N <- 100
cx <- runif(N)
cy <- runif(N)
coor <- cbind(cx,cy)
p <- c(1/6,3/6,2/6)
rho = 0.5
listw <- spdep::nb2listw(spdep::knn2nb(spdep::knearneigh(cbind(cx,cy), k = 4)))
fx <- dgp.spq(list = listw, p = p, rho = rho)
q.test <- Q.test(fx = fx, coor = coor, m = 3, r = 1)
plot(q.test)
#> [[1]]

#> 
#> [[2]]

#>