Create a spatial network based on cell centroid physical distances.

```
createSpatialNetwork(
gobject,
name = NULL,
dimensions = "all",
method = c("Delaunay", "kNN"),
delaunay_method = c("deldir", "delaunayn_geometry", "RTriangle"),
maximum_distance_delaunay = "auto",
options = "Pp",
Y = TRUE,
j = TRUE,
S = 0,
minimum_k = 0,
knn_method = "dbscan",
k = 4,
maximum_distance_knn = NULL,
verbose = F,
return_gobject = TRUE,
...
)
```

- gobject
giotto object

- name
name for spatial network (default = 'spatial_network')

- dimensions
which spatial dimensions to use (default = all)

- method
which method to use to create a spatial network. (default = Delaunay)

- delaunay_method
Delaunay method to use

- maximum_distance_delaunay
distance cuttof for nearest neighbors to consider for Delaunay network

- options
(geometry) String containing extra control options for the underlying Qhull command; see the Qhull documentation (../doc/qhull/html/qdelaun.html) for the available options. (default = 'Pp', do not report precision problems)

- Y
(RTriangle) If TRUE prohibits the insertion of Steiner points on the mesh boundary.

- j
(RTriangle) If TRUE jettisons vertices that are not part of the final triangulation from the output.

- S
(RTriangle) Specifies the maximum number of added Steiner points.

- minimum_k
minimum nearest neigbhours if maximum_distance != NULL

- knn_method
method to create kNN network

- k
number of nearest neighbors based on physical distance

- maximum_distance_knn
distance cuttof for nearest neighbors to consider for kNN network

- verbose
verbose

- return_gobject
boolean: return giotto object (default = TRUE)

- ...
Additional parameters for the selected function

giotto object with updated spatial network slot

Creates a spatial network connecting single-cells based on their physical distance to each other. For Delaunay method, neighbors will be decided by delaunay triangulation and a maximum distance criteria. For kNN method, number of neighbors can be determined by k, or maximum distance from each cell with or without setting a minimum k for each cell.

**dimensions: ** default = 'all' which takes all possible dimensions.
Alternatively you can provide a character vector that specififies the spatial dimensions to use, e.g. c("sdimx', "sdimy")
or a numerical vector, e.g. 2:3