How to use the Fiona library of python

This article mainly introduces "how to use python Fiona library". In daily operation, I believe many people have doubts about how to use python Fiona library. Xiaobian consulted various materials and sorted out simple and easy operation methods. I hope to help you answer the doubts about "how to use python Fiona library"! Next, please follow the small series to learn together!

Fiona can be used to open shp or geojson data, after installing fiona library, import, you can directly open a file.

import fiona

#Open a file read-only

shpdata = fiona.open(path, 'r')

#Use while to loop each piece of shp data, because the loop is using next, so use except to end?

while True:

try:

evdata = shdata.next()

except StopIteration:

break

The evdata result of the loop is a style of json data:

{'geometry': {'coordinates': [(106.7322972, 26.4702006),

(106.730837, 26.4701069), (106.7294714, 26.4700042),

(106.7286771, 26.4699373)],

'type': 'LineString'},

'properties': OrderedDict([('osm_id', '230614887'),

('name ', ' beltway '),('highway...

Contains coordinate information and attribute information therein

Shapely can be used to process spatial data, and the coordinates of json data are passed into shape.

That is, spatial data processing can be performed.

Class library URL: github.com/Toblerity/Shapely

#Import class library from shapely.geometry import shape#Transform spatial data sh_geom = shape(evdata ['geometry '])shapely To be based on python version of geos, you can do spatial analysis operations such as buffering and intersection, and you can also transform coordinates according to coordinate system. At this point, the study of "how to use python Fiona library" is over, hoping to solve everyone's doubts. Theory and practice can better match to help everyone learn, go and try it! If you want to continue learning more relevant knowledge, please continue to pay attention to the website, Xiaobian will continue to strive to bring more practical articles for everyone!