mirror of
https://github.com/wassname/PyCRS.git
synced 2026-08-12 11:40:15 +08:00
Move some elements from parameters to containers module
This commit is contained in:
Karim Bahgat
@@ -0,0 +1,189 @@
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from . import directions
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from . import datums
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# the final CRS object which is instantiated with all of the below and parameters
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# remember to use +no_defs when outputting to proj4
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# ...
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class CRS:
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def __init__(self, toplevel):
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self.toplevel = toplevel
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def to_proj4(self):
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if isinstance(self.toplevel, ProjCS):
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return "%s +no_defs" % self.toplevel.to_proj4()
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elif isinstance(self.toplevel, GeogCS):
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return "+proj=longlat %s +no_defs" % self.toplevel.to_proj4()
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def to_ogc_wkt(self):
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return "%s" % self.toplevel.to_ogc_wkt()
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def to_esri_wkt(self):
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return "%s" % self.toplevel.to_esri_wkt()
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##+proj Projection name (see `proj -l`)
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class Projection:
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proj4 = "+proj"
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ogc_wkt = "PROJECTION"
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esri_wkt = "PROJECTION"
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def __init__(self, value):
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self.value = value
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def to_proj4(self):
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return "+proj=%s" %self.value.proj4
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def to_ogc_wkt(self):
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return 'PROJECTION["%s"]' %self.value.ogc_wkt
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def to_esri_wkt(self):
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return 'PROJECTION["%s"]' %self.value.esri_wkt
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##+datum Datum name (see `proj -ld`)
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class Datum:
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proj4 = "+datum"
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ogc_wkt = "DATUM"
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esri_wkt = "DATUM"
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def __init__(self, name, ellipsoid, datumshift=None):
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"""
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Arguments:
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- **name**: Specific datum name instance.
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- **ellipsoid**: Ellipsoid parameter instance.
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"""
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self.name = name
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self.ellips = ellipsoid
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self.datumshift = datumshift
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def to_proj4(self):
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if self.datumshift:
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return "%s %s" % (self.ellips.to_proj4(), self.datumshift.to_proj4())
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elif isinstance(self.name, datums.Unknown):
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return "%s" % self.ellips.to_proj4()
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else:
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return "+datum=%s %s" % (self.name.proj4, self.ellips.to_proj4())
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def to_ogc_wkt(self):
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if self.datumshift:
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return 'DATUM["%s", %s, %s]' % (self.name.ogc_wkt, self.ellips.to_ogc_wkt(), self.datumshift.to_ogc_wkt())
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else:
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return 'DATUM["%s", %s]' % (self.name.ogc_wkt, self.ellips.to_ogc_wkt())
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def to_esri_wkt(self):
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if self.datumshift:
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return 'DATUM["%s", %s, %s]' % (self.name.esri_wkt, self.ellips.to_esri_wkt(), self.datumshift.to_esri_wkt())
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else:
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return 'DATUM["%s", %s]' % (self.name.esri_wkt, self.ellips.to_esri_wkt())
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def to_geotiff(self):
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pass
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#return "GeogGeodeticDatum"
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##+ellps Ellipsoid name (see `proj -le`)
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class Ellipsoid:
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proj4 = "+ellps"
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ogc_wkt = "SPHEROID"
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esri_wkt = "SPHEROID"
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def __init__(self, name, semimaj_ax=None, inv_flat=None):
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"""
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Arguments:
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- **name**: Specific ellipsoid name instance.
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"""
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self.name = name
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# get default values if not specified
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if semimaj_ax == None:
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semimaj_ax = self.name.semimaj_ax
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if inv_flat == None:
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inv_flat = self.name.inv_flat
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self.semimaj_ax = semimaj_ax
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self.inv_flat = inv_flat
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def to_proj4(self):
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return "+ellps=%s +a=%s +f=%s" % (self.name.proj4, self.semimaj_ax, self.inv_flat)
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def to_ogc_wkt(self):
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return 'SPHEROID["%s", %s, %s]' % (self.name.ogc_wkt, self.semimaj_ax, self.inv_flat)
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def to_esri_wkt(self):
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return 'SPHEROID["%s", %s, %s]' % (self.name.esri_wkt, self.semimaj_ax, self.inv_flat)
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def to_geotiff(self):
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pass
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#return "GeogEllipsoid"
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#GEOGCS
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class GeogCS:
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ogc_wkt = "GEOGCS"
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esri_wkt = "GEOGCS"
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def __init__(self, name, datum, prime_mer, angunit, twin_ax=None):
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"""
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Arguments:
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- **name**: Arbitrary name.
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"""
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self.name = name
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self.datum = datum
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self.prime_mer = prime_mer
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self.angunit = angunit
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if twin_ax == None:
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# default axes
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twin_ax = directions.East(), directions.North()
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self.twin_ax = twin_ax
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def to_proj4(self):
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# dont parse axis to proj4, because in proj4, axis only applies to the cs, ie the projcs (not the geogcs, where wkt can specify with axis)
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return "%s %s %s" % (self.datum.to_proj4(), self.prime_mer.to_proj4(), self.angunit.to_proj4() )
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def to_ogc_wkt(self):
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return 'GEOGCS["%s", %s, %s, %s, AXIS["Lon", %s], AXIS["Lat", %s]]' % (self.name, self.datum.to_ogc_wkt(), self.prime_mer.to_ogc_wkt(), self.angunit.to_ogc_wkt(), self.twin_ax[0].ogc_wkt, self.twin_ax[1].ogc_wkt )
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def to_esri_wkt(self):
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return 'GEOGCS["%s", %s, %s, %s, AXIS["Lon", %s], AXIS["Lat", %s]]' % (self.name, self.datum.to_esri_wkt(), self.prime_mer.to_esri_wkt(), self.angunit.to_esri_wkt(), self.twin_ax[0].esri_wkt, self.twin_ax[1].esri_wkt )
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#PROJCS
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class ProjCS:
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ogc_wkt = "PROJCS"
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esri_wkt = "PROJCS"
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def __init__(self, name, geogcs, proj, params, unit, twin_ax=None):
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"""
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Arguments:
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- **name**: Arbitrary name.
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"""
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self.name = name
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self.geogcs = geogcs
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self.proj = proj
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self.params = params
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self.unit = unit
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if twin_ax == None:
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# default axes
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twin_ax = directions.East(), directions.North()
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self.twin_ax = twin_ax
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def to_proj4(self):
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string = "%s %s " % (self.proj.to_proj4(), self.geogcs.to_proj4())
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string += " ".join(param.to_proj4() for param in self.params)
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string += " %s" % self.unit.to_proj4()
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string += " +axis=" + self.twin_ax[0].proj4 + self.twin_ax[1].proj4 + "u" # up set as default because only proj4 can set it I think...
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return string
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def to_ogc_wkt(self):
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string = 'PROJCS["%s", %s, %s, ' % (self.name, self.geogcs.to_ogc_wkt(), self.proj.to_ogc_wkt() )
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string += ", ".join(param.to_ogc_wkt() for param in self.params)
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string += ', %s' % self.unit.to_ogc_wkt()
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string += ', AXIS["X", %s], AXIS["Y", %s]]' % (self.twin_ax[0].ogc_wkt, self.twin_ax[1].ogc_wkt )
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return string
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def to_esri_wkt(self):
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string = 'PROJCS["%s", %s, %s, ' % (self.name, self.geogcs.to_esri_wkt(), self.proj.to_esri_wkt() )
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string += ", ".join(param.to_esri_wkt() for param in self.params)
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string += ', %s' % self.unit.to_esri_wkt()
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string += ', AXIS["X", %s], AXIS["Y", %s]]' % (self.twin_ax[0].esri_wkt, self.twin_ax[1].esri_wkt )
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return string
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Binary file not shown.
@@ -83,155 +83,6 @@ class Azimuth:
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def to_esri_wkt(self):
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return 'PARAMETER["Azimuth",%s]' % self.value
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##+datum Datum name (see `proj -ld`)
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class Datum:
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proj4 = "+datum"
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ogc_wkt = "DATUM"
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esri_wkt = "DATUM"
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def __init__(self, name, ellipsoid, datumshift=None):
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"""
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Arguments:
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- **name**: Specific datum name instance.
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- **ellipsoid**: Ellipsoid parameter instance.
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"""
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self.name = name
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self.ellips = ellipsoid
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self.datumshift = datumshift
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def to_proj4(self):
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if self.datumshift:
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return "%s %s" % (self.ellips.to_proj4(), self.datumshift.to_proj4())
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elif isinstance(self.name, datums.Unknown):
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return "%s" % self.ellips.to_proj4()
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else:
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return "+datum=%s %s" % (self.name.proj4, self.ellips.to_proj4())
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def to_ogc_wkt(self):
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if self.datumshift:
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return 'DATUM["%s", %s, %s]' % (self.name.ogc_wkt, self.ellips.to_ogc_wkt(), self.datumshift.to_ogc_wkt())
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else:
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return 'DATUM["%s", %s]' % (self.name.ogc_wkt, self.ellips.to_ogc_wkt())
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def to_esri_wkt(self):
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if self.datumshift:
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return 'DATUM["%s", %s, %s]' % (self.name.esri_wkt, self.ellips.to_esri_wkt(), self.datumshift.to_esri_wkt())
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else:
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return 'DATUM["%s", %s]' % (self.name.esri_wkt, self.ellips.to_esri_wkt())
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def to_geotiff(self):
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pass
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#return "GeogGeodeticDatum"
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##+ellps Ellipsoid name (see `proj -le`)
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class Ellipsoid:
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proj4 = "+ellps"
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ogc_wkt = "SPHEROID"
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esri_wkt = "SPHEROID"
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def __init__(self, name, semimaj_ax=None, inv_flat=None):
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"""
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Arguments:
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- **name**: Specific ellipsoid name instance.
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"""
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self.name = name
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# get default values if not specified
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if semimaj_ax == None:
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semimaj_ax = self.name.semimaj_ax
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if inv_flat == None:
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inv_flat = self.name.inv_flat
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self.semimaj_ax = semimaj_ax
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self.inv_flat = inv_flat
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def to_proj4(self):
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return "+ellps=%s +a=%s +f=%s" % (self.name.proj4, self.semimaj_ax, self.inv_flat)
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def to_ogc_wkt(self):
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return 'SPHEROID["%s", %s, %s]' % (self.name.ogc_wkt, self.semimaj_ax, self.inv_flat)
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def to_esri_wkt(self):
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return 'SPHEROID["%s", %s, %s]' % (self.name.esri_wkt, self.semimaj_ax, self.inv_flat)
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def to_geotiff(self):
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pass
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#return "GeogEllipsoid"
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#GEOGCS
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class GeogCS:
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ogc_wkt = "GEOGCS"
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esri_wkt = "GEOGCS"
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def __init__(self, name, datum, prime_mer, angunit, twin_ax=None):
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"""
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Arguments:
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- **name**: Arbitrary name.
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"""
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self.name = name
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self.datum = datum
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self.prime_mer = prime_mer
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self.angunit = angunit
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if twin_ax == None:
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# default axes
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twin_ax = directions.East(), directions.North()
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self.twin_ax = twin_ax
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def to_proj4(self):
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# dont parse axis to proj4, because in proj4, axis only applies to the cs, ie the projcs (not the geogcs, where wkt can specify with axis)
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return "%s %s %s" % (self.datum.to_proj4(), self.prime_mer.to_proj4(), self.angunit.to_proj4() )
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def to_ogc_wkt(self):
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return 'GEOGCS["%s", %s, %s, %s, AXIS["Lon", %s], AXIS["Lat", %s]]' % (self.name, self.datum.to_ogc_wkt(), self.prime_mer.to_ogc_wkt(), self.angunit.to_ogc_wkt(), self.twin_ax[0].ogc_wkt, self.twin_ax[1].ogc_wkt )
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def to_esri_wkt(self):
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return 'GEOGCS["%s", %s, %s, %s, AXIS["Lon", %s], AXIS["Lat", %s]]' % (self.name, self.datum.to_esri_wkt(), self.prime_mer.to_esri_wkt(), self.angunit.to_esri_wkt(), self.twin_ax[0].esri_wkt, self.twin_ax[1].esri_wkt )
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#PROJCS
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class ProjCS:
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ogc_wkt = "PROJCS"
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esri_wkt = "PROJCS"
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def __init__(self, name, geogcs, proj, params, unit, twin_ax=None):
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"""
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Arguments:
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- **name**: Arbitrary name.
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"""
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self.name = name
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self.geogcs = geogcs
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self.proj = proj
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self.params = params
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self.unit = unit
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if twin_ax == None:
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# default axes
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twin_ax = directions.East(), directions.North()
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self.twin_ax = twin_ax
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def to_proj4(self):
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string = "%s %s " % (self.proj.to_proj4(), self.geogcs.to_proj4())
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string += " ".join(param.to_proj4() for param in self.params)
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string += " %s" % self.unit.to_proj4()
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string += " +axis=" + self.twin_ax[0].proj4 + self.twin_ax[1].proj4 + "u" # up set as default because only proj4 can set it I think...
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return string
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def to_ogc_wkt(self):
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string = 'PROJCS["%s", %s, %s, ' % (self.name, self.geogcs.to_ogc_wkt(), self.proj.to_ogc_wkt() )
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string += ", ".join(param.to_ogc_wkt() for param in self.params)
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string += ', %s' % self.unit.to_ogc_wkt()
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string += ', AXIS["X", %s], AXIS["Y", %s]]' % (self.twin_ax[0].ogc_wkt, self.twin_ax[1].ogc_wkt )
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return string
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def to_esri_wkt(self):
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string = 'PROJCS["%s", %s, %s, ' % (self.name, self.geogcs.to_esri_wkt(), self.proj.to_esri_wkt() )
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string += ", ".join(param.to_esri_wkt() for param in self.params)
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string += ', %s' % self.unit.to_esri_wkt()
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string += ', AXIS["X", %s], AXIS["Y", %s]]' % (self.twin_ax[0].esri_wkt, self.twin_ax[1].esri_wkt )
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return string
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##+k Scaling factor (old name)
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##+k_0 Scaling factor (new name)
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@@ -412,24 +263,6 @@ class PrimeMeridian:
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def to_esri_wkt(self):
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return 'PRIMEM["Greenwich", %s]' %self.value
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##+proj Projection name (see `proj -l`)
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class Projection:
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proj4 = "+proj"
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ogc_wkt = "PROJECTION"
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esri_wkt = "PROJECTION"
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def __init__(self, value):
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self.value = value
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def to_proj4(self):
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return "+proj=%s" %self.value.proj4
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def to_ogc_wkt(self):
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return 'PROJECTION["%s"]' %self.value.ogc_wkt
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def to_esri_wkt(self):
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return 'PROJECTION["%s"]' %self.value.esri_wkt
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##+zone UTM zone
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##+south Denotes southern hemisphere UTM zone
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@@ -599,24 +432,4 @@ class TiltAngle:
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def to_esri_wkt(self):
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raise Exception("Parameter not supported by ESRI WKT")
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# then the final CRS object which is instantiated with all of these?
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# remember to use +no_defs when outputting to proj4
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# ...
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class CRS:
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def __init__(self, toplevel):
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self.toplevel = toplevel
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def to_proj4(self):
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if isinstance(self.toplevel, ProjCS):
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return "%s +no_defs" % self.toplevel.to_proj4()
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elif isinstance(self.toplevel, GeogCS):
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return "+proj=longlat %s +no_defs" % self.toplevel.to_proj4()
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def to_ogc_wkt(self):
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return "%s" % self.toplevel.to_ogc_wkt()
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def to_esri_wkt(self):
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return "%s" % self.toplevel.to_esri_wkt()
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