mirror of
https://github.com/wassname/PyCRS.git
synced 2026-09-12 12:10:50 +08:00
Colleted esri_wkt and esri_wkt parsing into one function which works, and added find() methods in each mod for easier name-to-obj parsing
This commit is contained in:
Karim Bahgat
+140
-37
@@ -22,22 +22,44 @@
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# +unit and +to_metre are what makes up 'UNIT["Meter",1.0]'
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from . import datums
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from . import directions
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################
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# ONLY PURE VALUES INSIDE ELLIPSOID...
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def find(paramname, crstype, strict=False):
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if not strict:
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paramname = paramname.lower()
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for itemname,item in globals().items():
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if itemname.startswith("_"):
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continue
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try:
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if hasattr(item, crstype):
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itemname = getattr(item, crstype)
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if not strict:
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itemname = itemname.lower()
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if paramname == itemname:
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return item
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except:
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pass
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else:
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return None
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##+a Semimajor radius of the ellipsoid axis
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class SemiMajorRadius:
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proj4 = "+a"
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def __init__(self, value):
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pass
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# NOT CURRENTLY USED, BUT SHOULD BE
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# FOR NOW ONLY SET AS PURE VALUES INSIDE ELLIPSOID...
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##+b Semiminor radius of the ellipsoid axis
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class SemiMinorRadius:
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proj4 = "+b"
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def __init__(self, value):
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pass
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####+a Semimajor radius of the ellipsoid axis
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##class SemiMajorRadius:
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## proj4 = "+a"
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## def __init__(self, value):
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## pass
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##
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####+b Semiminor radius of the ellipsoid axis
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##class SemiMinorRadius:
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## proj4 = "+b"
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## def __init__(self, value):
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## pass
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@@ -49,6 +71,7 @@ class Azimuth:
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esri_wkt = "azimuth"
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ogc_wkt = "azimuth"
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geotiff = "AzimuthAngle"
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def __init__(self, value):
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self.value = value
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@@ -59,10 +82,14 @@ class Azimuth:
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return 'PARAMETER["Azimuth",%s]' % self.value
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def to_esri_wkt(self):
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return self.to_ogc_wkt()
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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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@@ -77,6 +104,8 @@ class Datum:
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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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@@ -87,7 +116,10 @@ class Datum:
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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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return self.to_ogc_wkt()
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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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@@ -95,6 +127,10 @@ class Datum:
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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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@@ -119,7 +155,7 @@ class Ellipsoid:
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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 self.to_ogc_wkt()
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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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@@ -127,6 +163,9 @@ class Ellipsoid:
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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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@@ -143,16 +182,20 @@ class GeogCS:
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self.twin_ax = twin_ax
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def to_proj4(self):
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return "%s %s %s" % (self.datum.to_proj4(), self.prime_mer.to_proj4(), self.angunit.to_proj4() ) #+axis= AND #, self.twin_ax[0].proj4, self.twin_ax[1].proj4 )
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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 self.to_ogc_wkt()
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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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@@ -173,7 +216,6 @@ class ProjCS:
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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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# in proj4, axis only applies to the cs, ie the projcs (not the geogcs, where wkt can specify with axis)
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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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@@ -185,11 +227,18 @@ class ProjCS:
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return string
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def to_esri_wkt(self):
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return self.to_ogc_wkt()
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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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class ScalingFactor:
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proj4 = "+k"
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ogc_wkt = "scale_factor"
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def __init__(self, value):
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self.value = value
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@@ -200,6 +249,7 @@ class ScalingFactor:
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return 'PARAMETER["scale_factor", %s]' %self.value
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def to_esri_wkt(self):
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# REALLY??
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raise Exception("Paramater not supported by ESRI WKT")
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def to_geotiff(self):
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@@ -208,6 +258,10 @@ class ScalingFactor:
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##+lat_0 Latitude of origin
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class LatitudeOrigin:
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proj4 = "+lat_0"
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ogc_wkt = "latitude_of_origin"
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esri_wkt = "Latitude_Of_Origin"
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def __init__(self, value):
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self.value = value
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@@ -219,7 +273,7 @@ class LatitudeOrigin:
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return 'PARAMETER["latitude_of_origin", %s]' %self.value
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def to_esri_wkt(self):
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raise Exception("Paramater not supported by ESRI WKT")
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return 'PARAMETER["Latitude_Of_Origin", %s]' %self.value
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def to_geotiff(self):
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pass
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@@ -227,6 +281,10 @@ class LatitudeOrigin:
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##+lat_1 Latitude of first standard parallel
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class LatitudeFirstStndParallel:
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proj4 = "+lat_1"
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ogc_wkt = "standard_parallel_1"
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esri_wkt = "Standard_Parallel_1"
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def __init__(self, value):
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self.value = value
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@@ -237,7 +295,7 @@ class LatitudeFirstStndParallel:
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return 'PARAMETER["standard_parallel_1", %s]' %self.value
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def to_esri_wkt(self):
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return self.to_ogc_wkt()
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return 'PARAMETER["Standard_Parallel_1", %s]' %self.value
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def to_geotiff(self):
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pass
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@@ -245,6 +303,10 @@ class LatitudeFirstStndParallel:
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##+lat_2 Latitude of second standard parallel
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class LatitudeSecondStndParallel:
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proj4 = "+lat_2"
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ogc_wkt = "standard_parallel_2"
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esri_wkt = "Standard_Parallel_2"
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def __init__(self, value):
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self.value = value
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@@ -255,7 +317,7 @@ class LatitudeSecondStndParallel:
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return 'PARAMETER["standard_parallel_2", %s]' %self.value
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def to_esri_wkt(self):
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return self.to_ogc_wkt()
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return 'PARAMETER["Standard_Parallel_2", %s]' %self.value
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def to_geotiff(self):
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pass
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@@ -263,6 +325,10 @@ class LatitudeSecondStndParallel:
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##+lat_ts Latitude of true scale
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class LatitudeTrueScale:
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proj4 = "lat_ts"
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ogc_wkt = "Standard_Parallel_1"
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esri_wkt = "Standard_Parallel_1"
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def __init__(self, value):
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self.value = value
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@@ -273,7 +339,7 @@ class LatitudeTrueScale:
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return 'PARAMETER["Standard_Parallel_1", %s]' %self.value
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def to_esri_wkt(self):
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return self.to_ogc_wkt()
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return 'PARAMETER["Standard_Parallel_1", %s]' %self.value
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def to_geotiff(self):
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pass
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@@ -281,6 +347,10 @@ class LatitudeTrueScale:
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##+lon_0 Central meridian
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class CentralMeridian:
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proj4 = "+lon_0"
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ogc_wkt = "Central_Meridian"
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esri_wkt = "Central_Meridian"
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def __init__(self, value):
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self.value = value
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@@ -291,7 +361,7 @@ class CentralMeridian:
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return 'PARAMETER["Central_Meridian", %s]' %self.value
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def to_esri_wkt(self):
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return self.to_ogc_wkt()
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return 'PARAMETER["Central_Meridian", %s]' %self.value
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def to_geotiff(self):
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pass
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@@ -300,6 +370,9 @@ class CentralMeridian:
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##+lonc ? Longitude used with Oblique Mercator and possibly a few others
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class LongitudeCenter:
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proj4 = "+lonc"
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ogc_wkt = "Longitude_Of_Center"
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esri_wkt = "Longitude_Of_Center"
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def __init__(self, value):
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self.value = value
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@@ -310,7 +383,7 @@ class LongitudeCenter:
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return 'PARAMETER["Longitude_Of_Center", %s]' %self.value
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def to_esri_wkt(self):
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return self.to_ogc_wkt()
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return 'PARAMETER["Longitude_Of_Center", %s]' %self.value
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##+lon_wrap Center longitude to use for wrapping (see below)
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@@ -318,6 +391,10 @@ class LongitudeCenter:
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##+pm Alternate prime meridian (typically a city name, see below)
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class PrimeMeridian:
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proj4 = "+pm"
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ogc_wkt = "PRIMEM"
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esri_wkt = "PRIMEM"
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def __init__(self, value):
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"""
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Arguments:
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@@ -333,10 +410,14 @@ class PrimeMeridian:
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return 'PRIMEM["Greenwich", %s]' %self.value
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def to_esri_wkt(self):
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return self.to_ogc_wkt()
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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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@@ -347,7 +428,7 @@ class Projection:
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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 self.to_ogc_wkt()
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return 'PROJECTION["%s"]' %self.value.esri_wkt
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##+zone UTM zone
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@@ -355,6 +436,9 @@ class Projection:
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##+towgs84 3 or 7 term datum transform parameters (see below)
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class DatumShift:
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proj4 = "+towgs84"
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ogc_wkt = "TOWGS84"
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def __init__(self, value):
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self.value = value
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@@ -369,6 +453,8 @@ class DatumShift:
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##+to_meter Multiplier to convert map units to 1.0m
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class MeterMultiplier:
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proj4 = "+to_meter"
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def __init__(self, value):
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self.value = value
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@@ -380,10 +466,12 @@ class MeterMultiplier:
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return bytes(self.value)
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def to_esri_wkt(self):
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return self.to_ogc_wkt()
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return bytes(self.value)
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##+units meters, US survey feet, etc.
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class UnitType:
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proj4 = "+units"
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def __init__(self, value):
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"""
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Arguments:
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@@ -400,10 +488,13 @@ class UnitType:
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return bytes(self.value.ogc_wkt)
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def to_esri_wkt(self):
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return self.to_ogc_wkt()
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return bytes(self.value.esri_wkt)
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# special...
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class Unit:
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ogc_wkt = "UNIT"
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esri_wkt = "UNIT"
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def __init__(self, unittype, metermultiplier):
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self.unittype = unittype
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self.metermultiplier = metermultiplier
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@@ -415,10 +506,13 @@ class Unit:
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return 'UNIT["%s", %s]' %(self.unittype.to_ogc_wkt(), self.metermultiplier.to_ogc_wkt())
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def to_esri_wkt(self):
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return self.to_ogc_wkt()
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return 'UNIT["%s", %s]' %(self.unittype.to_esri_wkt(), self.metermultiplier.to_esri_wkt())
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# angular unit
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class AngularUnit:
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ogc_wkt = "UNIT"
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esri_wkt = "UNIT"
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def __init__(self, unittype, metermultiplier):
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self.unittype = unittype
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self.metermultiplier = metermultiplier
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@@ -431,7 +525,7 @@ class AngularUnit:
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return 'UNIT["%s", %s]' %(self.unittype.to_ogc_wkt(), self.metermultiplier.to_ogc_wkt())
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def to_esri_wkt(self):
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return self.to_ogc_wkt()
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return 'UNIT["%s", %s]' %(self.unittype.to_esri_wkt(), self.metermultiplier.to_esri_wkt())
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##+x_0 False easting
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class FalseEasting:
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@@ -450,7 +544,7 @@ class FalseEasting:
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return 'PARAMETER["false_easting", %s]' % self.value
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def to_esri_wkt(self):
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return self.to_ogc_wkt()
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return 'PARAMETER["False_Easting", %s]' % self.value
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##+y_0 False northing
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class FalseNorthing:
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@@ -469,10 +563,14 @@ class FalseNorthing:
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return 'PARAMETER["false_northing", %s]' % self.value
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def to_esri_wkt(self):
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return self.to_ogc_wkt()
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return 'PARAMETER["False_Northing", %s]' % self.value
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##+h Satellite height
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class SatelliteHeight:
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proj4 = "+h"
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ogc_wkt = "satellite_height"
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esri_wkt = "satellite_height"
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def __init__(self, value):
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self.value = value
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@@ -483,10 +581,12 @@ class SatelliteHeight:
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return 'PARAMETER["satellite_height", %s]' % self.value
|
||||
|
||||
def to_esri_wkt(self):
|
||||
return self.to_ogc_wkt()
|
||||
return 'PARAMETER["satellite_height", %s]' % self.value
|
||||
|
||||
##+tilt Tilt angle
|
||||
class TiltAngle:
|
||||
proj4 = "+tilt"
|
||||
|
||||
def __init__(self, value):
|
||||
self.value = value
|
||||
|
||||
@@ -494,10 +594,10 @@ class TiltAngle:
|
||||
return "+tilt=%s" %self.value
|
||||
|
||||
def to_ogc_wkt(self):
|
||||
raise Exception("Paramater not supported by OGC WKT")
|
||||
raise Exception("Parameter not supported by OGC WKT")
|
||||
|
||||
def to_esri_wkt(self):
|
||||
raise Exception("Paramater not supported by ESRI WKT")
|
||||
raise Exception("Parameter not supported by ESRI WKT")
|
||||
|
||||
|
||||
# then the final CRS object which is instantiated with all of these?
|
||||
@@ -508,12 +608,15 @@ class CRS:
|
||||
self.toplevel = toplevel
|
||||
|
||||
def to_proj4(self):
|
||||
return "%s +no_defs" % self.toplevel.to_proj4()
|
||||
if isinstance(self.toplevel, ProjCS):
|
||||
return "%s +no_defs" % self.toplevel.to_proj4()
|
||||
elif isinstance(self.toplevel, GeogCS):
|
||||
return "+proj=longlat %s +no_defs" % self.toplevel.to_proj4()
|
||||
|
||||
def to_ogc_wkt(self):
|
||||
return "%s" % self.toplevel.to_ogc_wkt()
|
||||
|
||||
def to_esri_wkt(self):
|
||||
return self.to_ogc_wkt()
|
||||
return "%s" % self.toplevel.to_esri_wkt()
|
||||
|
||||
|
||||
|
||||
Reference in New Issue
Block a user