fionautil 0.4.2

fionautil

Utilities for working with geodata with Fiona. Some features are shorthand for pyproj features, or add in support for projections.

By defauly, the only prerequisites are pyproj and 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.

feature

• overlaps

• 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)

• bbox

• 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 that 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 (records a layers meta attribute)

• 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)

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