Zoning: Class "Zoning"

In GeoFIS: Spatial Data Processing for Decision Making

Class "Zoning"

Description

The main class to perform zoning
A complete use-case example is described in the vignette "Zoning with GeoFIS"

Active bindings

border

SpatialPolygons object, The border used to limit the processed area, or NULL if the Convex Hull of data source is used
Only data points within the border polygon are processed
The default value is NULL

neighborhood

numeric value, The minimum edge length shared by two Voronoi polygons for being considered as neighbors
or NULL if all contiguous Voronoi polygons are considered as neighbors
The default value is NULL

attribute_distance

list of Distance object (write-only), The functions used to compute the distance between two data points in the attribute space
The length of the list must be equal to the number of zonable attributes, the distance objects are treated in the order of zonable attributes
In case of a single attribute into the zonable dataset, the list is optional and a single Distance object can be provided
Allowed distance objects: EuclideanDistance, FuzzyDistance or NULL if the attribute should not be used in the zoning process
The default value is a list of EuclideanDistance
See Zoning documentation main parameters univariate distance

combine_distance

Distance object (write-only), The function used to combine attribute distances in case of multivariate zoning
Allowed distance objects: EuclideanDistance or MinkowskiDistance
The default value is EuclideanDistance See Zoning documentation main parameters multivariate combination

zone_distance

Distance object (write-only), The function used to compute the distance between 2 zones
Allowed distance objects: MaximumDistance, MinimumDistance or MeanDistance
The default value is MaximumDistance
The pair of zones to be merged are those for which the zone_distance is minimum.
See Zoning documentation main parameters between zone distance

smallest_zone

Smallest zone object (write-only), This criterion is used to determine the smallest size for a zone (number of points or area) to be kept in the final map
Allowed Smallest zone objects: ZoneSize or ZoneArea
The default value is ZoneSize with 1 point

Methods

Public methods

• Zoning$new()

• Zoning$zonable_data()

• Zoning$perform_voronoi()

• Zoning$voronoi_map()

• Zoning$perform_neighborhood()

• Zoning$neighborhood_map()

• Zoning$perform_zoning()

• Zoning$map_size()

• Zoning$map()

• Zoning$maps()

---

Method new()

Constructor, create a new instance of Zoning

Usage

Zoning$new(source, warn = TRUE)

Arguments

source

SpatialPointsDataFrame or SpatialMultiPointsDataFrame object, The data source

warn

logical value, Show warnings if TRUE, default value is TRUE

---

Method zonable_data()

Get the zonable data
Keep only the attributes that can be used in the zoning process, meaning numeric atributes, without missing values and with a range that is not limited to a unique value
The last condition is required by the min-max standardization process

Usage

Zoning$zonable_data()

Returns

SpatialPointsDataFrame object

---

Method perform_voronoi()

Compute the Voronoi diagram

Usage

Zoning$perform_voronoi()

---

Method voronoi_map()

Get the Voronoi map

Usage

Zoning$voronoi_map()

Returns

SpatialPolygons object

---

Method perform_neighborhood()

Identify adjacent polygons in the voronoi tesselation

Usage

Zoning$perform_neighborhood()

---

Method neighborhood_map()

Get the neighborhood map

Usage

Zoning$neighborhood_map()

Returns

SpatialLinesDataFrame object

---

Method perform_zoning()

Perform the zoning

Usage

Zoning$perform_zoning()

---

Method map_size()

Get the number of maps with different number of zones available after perform zoning

Usage

Zoning$map_size()

Returns

integer value

---

Method map()

Get the map corresponding to a number of zones

Usage

Zoning$map(number_of_zones)

Arguments

number_of_zones

integer value, The number of zones in the map

Returns

SpatialPolygonsDataFrame object

---

Method maps()

Get the maps corresponding to a number of zones

Usage

Zoning$maps(number_of_zones)

Arguments

number_of_zones

integer vector, The number of zones in each map

Returns

list of SpatialPolygonsDataFrame object

References

\insertRef

Pedroso10GeoFIS

\insertRef

Infsci13GeoFIS

\insertRef

fuzzieee13GeoFIS

See Also

NewZoning

Zoning documentation

GeoFIS documentation built on Oct. 5, 2022, 5:06 p.m.