mirror of
https://github.com/wassname/PyCRS.git
synced 2026-06-27 16:10:29 +08:00
Karim Bahgat
a8aad24a13
Next step figure out more stable proj4 parsing of datums and proj etc, with adding more specific names. Then consistently make to_esriwkt work.
51 lines
1.5 KiB
Python
51 lines
1.5 KiB
Python
import pycrs
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proj4 = "+proj=robin +lon_0=0 +x_0=0 +y_0=0 +ellps=WGS84 +datum=WGS84 +units=m +no_defs"
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#proj4 = "+proj=longlat +ellps=WGS84 +datum=WGS84"
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#crs = pycrs.parser.from_esri_code(54030)
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#crs = pycrs.parser.from_sr_code(7898)
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#crs = pycrs.parser.from_epsg_code(4324)
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#crs = pycrs.parser.from_sr_code(6618)
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crs = pycrs.parser.from_proj4(proj4)
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print crs.to_proj4()
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import urllib2
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import json
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import pygeoj
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import pyagg
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import pyproj
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c = pyagg.Canvas(600,600)
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c.geographic_space()
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raw = urllib2.urlopen("https://raw.githubusercontent.com/johan/world.geo.json/master/countries.geo.json").read()
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rawdict = json.loads(raw)
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data = pygeoj.load(data=rawdict)
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proj4 = crs.to_proj4()
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fromproj = pyproj.Proj("+init=EPSG:4326")
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toproj = pyproj.Proj(proj4)
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print data.bbox
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for feat in data:
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if feat.geometry.type == "Polygon":
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feat.geometry.coordinates = [zip(*pyproj.transform(fromproj, toproj, zip(*ring)[0], zip(*ring)[1]))
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for ring in feat.geometry.coordinates]
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data.add_all_bboxes()
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xmins, ymins, xmaxs, ymaxs = zip(*(feat.geometry.bbox for feat in data))
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bbox = (min(xmins), min(ymins), max(xmaxs), max(ymaxs))
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# print data.bbox #PYGEOJ data.bbox doesnt update.........FIX!
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print bbox
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c.zoom_bbox(*bbox)
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for feat in data:
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if feat.geometry.type == "Polygon":
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try: c.draw_geojson(feat.geometry, outlinecolor="white")
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except:
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# NOTE: feat.__geo_interface__ is one level too high maybe??
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print feat.geometry
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c.view()
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