fionautil 0.5.2

fionautil

Utilities for working with geodata with Fiona.

By default, the only prerequisite is Fiona itself.

By default, the package installs without shapely. A small number of functions, marked below, do require shapely. To use these function, install with pip install fionautil[functionname] or just separately install shapely.

drivers

Tools for fetching the driver name, given a file suffix

• from_file

• From suffix

feature

• field_contains_test (test if a feature’s properties has certain key:value pairs)

• togeojson (return a geojson-ready object)

• shapify (requires shapely)

• length (requires shapely)

• compound

geometry

• endpoints (for polyline features)

• startpoint (for polyline features)

• endpoint (for polyline features)

• azimuth (between the start and end of a polyline)

• disjointed

• explodepoints

• explodesegments

• exploderings

• countpoints

• countsegments

• roundgeometry - round all coordinates in a geometry to a given precision

layer

Most of these tools mimic builtin python itertools.

• ffilter

• ffilterfalse

• fmap

• fchain

• freduce

• fslice

• fzip

• length Total length of linear features in a file’s native projection or the given Proj object

• meta (returns a layer’s meta attribute)

• meta_complete (returns the meta attribute with addional metadata, e.g. bounds)

• bounds (returns a layer’s bounds)

• find (return a feature that matches a particular key=value)

measure

• distance (between two coordinates)

• azimuth (between two coordinates)

• signed_area

• clockwise (shortcut for checking if signed_area is >= 0)

• counterclockwise (shortcut for checking if signed_area is < 0)

• azimuth_distance (returns both azimuth and distance between two points)

• intersect (check if two planar line segments intersect)

• onsegment (check if a point lines on a line segment)

round

• geometry - round all coordinates in a geometry to a specified precision

• feature

scale

Utilities for scaling a feature or geometry by a given constant. Goes faster with Numpy installed.

• geometry

• scale_rings

• scale - scales a list of coordinates

• feature - scale the geometry of a feature