overDS: Wrapper for 'over()' function from sp and rgeos package
In tombisho/dsGeo: DataSHIELD server side geospatial functions

Description Usage Arguments Details Value Author(s)

View source: R/overDS.R

This function is a wrapper for the over() function from the sp and rgeos package.consistent spatial overlay for points, grids and polygons: at the spatial locations of object x retrieves the indexes or attributes from spatial object y. over() can be seen as a left outer join in SQL; the match is a spatial intersection.

1	overDS(input_x, input_y, retList = FALSE, fun = NULL)

`input_x`	geometry (locations) of the queries
`input_y`	layer from which the geometries or attributes are queried
`retList`	logical; see value
`fun`	optional, a function; see value

See the over() function from sp and rgeos package for more details

If y is only geometry an object of length length(x). If returnList is FALSE, a vector with the (first) index of y for each geometry (point, grid cell centre, polygon or lines) in x. if returnList is TRUE, a list of length length(x), with list element i the vector of all indices of the geometries in y that correspond to the $i$-th geometry in x. If y has attribute data, attribute data are returned. returnList is FALSE, a data.frame with number of rows equal to length(x) is returned, if it is TRUE a list with length(x) elements is returned, with a list element the data.frame elements of all geometries in y that correspond to that element of x.

Bishop, T.

tombisho/dsGeo documentation built on May 14, 2020, 1:39 a.m.