wicket (version 0.4.0)

validate_wkt: Validate WKT objects

Description

validate_wkt takes a vector of WKT objects and validates them, returning a data.frame containing the status of each entry and (in the case it cannot be parsed) any comments as to what, in particular, may be wrong with it. It does not, unfortunately, check whether the object meets the WKT spec - merely that it is formatted correctly.

Usage

validate_wkt(x)

Arguments

x

a character vector of WKT objects.

Value

a data.frame of two columns, is_valid (containing TRUE or FALSE values for whether the WKT object is parseable and valid) and comments (containing any error messages in the case that the WKT object is not). If the objects are simply NA, both fields will contain NA.

See Also

sp_convert for generating valid WKT objects from SpatialPolygons and SpatialPolygonDataFrames, or wkt_correct for correcting WKT objects that fail validity checks due to having a non-default orientation.

Examples

# NOT RUN {
wkt <- c("POLYGON ((30 10, 40 40, 20 40, 10 20, 30 10))",
        "ARGHLEFLARFDFG",
        "LINESTRING (30 10, 10 90, 40 out of cheese error redo universe from start)")
validate_wkt(wkt)

# }