SPAG: Function calculating the coverage, distance and overlap...
In pbiecek/SPAG: Indexes of spatial agglomeration

Description Usage Arguments Examples

Function calculating the coverage, distance and overlap components of the SPAG Index.

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SPAG(companiesDF, shp, theoreticalSample = 1000, empiricalSample = 1000,
  numberOfSamples = 1, columnAreaName, companiesProjection, CRSProjection,
  totalOnly = FALSE, theoreticalDistributionType = "regular")

`companiesDF`	- data frame with information regarding the companies. The data frame needs four columns: the longitude and latitude, the number of employees in each company and a category to which the company is assigned. The columns should be provided in the aforementioned order.
`shp`	- SpatialPolygonsDataFrame object obtained via loading a shapefile.
`theoreticalSample`	- number of Companies used of the estimation of the average distance between companies assuming uniform distribution.
`empiricalSample`	- number of companies used for the estimation of the average distance between companeis for which the distance index is being calculated.
`numberOfSamples`	-

data(CompaniesPoland)
data(MapPoland)
spagIndex <- SPAG(CompaniesPoland,shp = MapPoland)
print(spagIndex)
plot(spagIndex)
plot(spagIndex, addCompanies = FALSE)
plot(spagIndex, category = "A")
plot(spagIndex, category = "A") + coord_map("orthographic")
plot(spagIndex, category = "B")
plot(spagIndex, category = "C")