def l_ll2en(points):
# points = [(id,lon,lat), ...]
result = []
for (id,lon, lat) in points:
(z, easting, northing) = redfearn(lat, lon)
result.append((id, lon, lat, easting, northing))
return result
def test_nonstandard_meridian(self):
"""test_nonstandard_meridian
This test will verify that redfearn can be used to project
points using an arbitrary central meridian.
"""
# The file projection_test_points.csv contains 10 points
# which straddle the boundary between UTM zones 53 and 54.
# They have been projected using a central meridian of 137.5
# degrees (the boundary is 138 so it is pretty much right
# in the middle of zones 53 and 54).
path = get_pathname_from_package('anuga.coordinate_transforms')
datafile = join(path, 'tests', 'data', 'projection_test_points.csv')
fid = open(datafile)
for line in fid.readlines()[1:]:
fields = line.strip().split(',')
lon = float(fields[1])
lat = float(fields[2])
x = float(fields[3])
y = float(fields[4])
zone, easting, northing = redfearn(lat,
lon,
central_meridian=137.5,
scale_factor=0.9996)
assert zone == -1 # Indicates non UTM projection
assert num.allclose(x, easting)
assert num.allclose(y, northing)
# Test that zone and meridian can't both be specified
try:
zone, easting, northing = redfearn(lat,
lon,
zone=50,
central_meridian=137.5)
except:
pass
else:
msg = 'Should have raised exception'
raise Exception, msg
def test_UTM_3(self):
#Test 3
lat = degminsec2decimal_degrees(-60,0,0)
lon = degminsec2decimal_degrees(130,0,0)
zone, easting, northing = redfearn(lat,lon)
assert zone == 52
assert num.allclose(easting, 555776.267)
assert num.allclose(northing, 3348167.264)
def test_UTM_3(self):
#Test 3
lat = degminsec2decimal_degrees(-60,0,0)
lon = degminsec2decimal_degrees(130,0,0)
zone, easting, northing = redfearn(lat,lon)
assert zone == 52
assert num.allclose(easting, 555776.267)
assert num.allclose(northing, 3348167.264)
def test_nonstandard_meridian(self):
"""test_nonstandard_meridian
This test will verify that redfearn can be used to project
points using an arbitrary central meridian.
"""
# The file projection_test_points.csv contains 10 points
# which straddle the boundary between UTM zones 53 and 54.
# They have been projected using a central meridian of 137.5
# degrees (the boundary is 138 so it is pretty much right
# in the middle of zones 53 and 54).
path = get_pathname_from_package('anuga.coordinate_transforms')
datafile = join(path, 'tests', 'data', 'projection_test_points.csv')
fid = open(datafile)
for line in fid.readlines()[1:]:
fields = line.strip().split(',')
lon = float(fields[1])
lat = float(fields[2])
x = float(fields[3])
y = float(fields[4])
zone, easting, northing = redfearn(lat, lon,
central_meridian=137.5,
scale_factor=0.9996)
assert zone == -1 # Indicates non UTM projection
assert num.allclose(x, easting)
assert num.allclose(y, northing)
# Test that zone and meridian can't both be specified
try:
zone, easting, northing = redfearn(lat, lon,
zone=50,
central_meridian=137.5)
except:
pass
else:
msg = 'Should have raised exception'
raise Exception, msg
def test_UTM_5(self):
#Test 5 (Wollongong)
lat = degminsec2decimal_degrees(-34,30,0.)
lon = degminsec2decimal_degrees(150,55,0.)
zone, easting, northing = redfearn(lat,lon)
assert zone == 56
assert num.allclose(easting, 308728.009)
assert num.allclose(northing, 6180432.601)
def test_UTM_5(self):
#Test 5 (Wollongong)
lat = degminsec2decimal_degrees(-34,30,0.)
lon = degminsec2decimal_degrees(150,55,0.)
zone, easting, northing = redfearn(lat,lon)
assert zone == 56
assert num.allclose(easting, 308728.009)
assert num.allclose(northing, 6180432.601)
def test_UTM_4(self):
#Test 4 (Kobenhavn, Northern hemisphere)
lat = 55.70248
dd, mm, ss = decimal_degrees2degminsec(lat)
lon = 12.58364
dd, mm, ss = decimal_degrees2degminsec(lon)
zone, easting, northing = redfearn(lat, lon)
assert zone == 33
assert num.allclose(easting, 348157.631)
assert num.allclose(northing, 6175612.993)
def test_UTM_4(self):
#Test 4 (Kobenhavn, Northern hemisphere)
lat = 55.70248
dd,mm,ss = decimal_degrees2degminsec(lat)
lon = 12.58364
dd,mm,ss = decimal_degrees2degminsec(lon)
zone, easting, northing = redfearn(lat,lon)
assert zone == 33
assert num.allclose(easting, 348157.631)
assert num.allclose(northing, 6175612.993)
def test_UTM_2(self):
#TEST 2
#Latitude: -37 57 03.7203
#Longitude: 144 25 29.5244
#Zone: 55
#Easting: 273741.297 Northing: 5796489.777
#Latitude: -37 57 ' 3.72030 '' Longitude: 144 25 ' 29.52440 ''
#Grid Convergence: -1 35 ' 3.65 '' Point Scale: 1.00023056
lat = degminsec2decimal_degrees(-37,57,03.7203)
lon = degminsec2decimal_degrees(144,25,29.5244)
zone, easting, northing = redfearn(lat,lon)
assert zone == 55
assert num.allclose(easting, 273741.297)
assert num.allclose(northing, 5796489.777)
def test_UTM_2(self):
#TEST 2
#Latitude: -37 57 03.7203
#Longitude: 144 25 29.5244
#Zone: 55
#Easting: 273741.297 Northing: 5796489.777
#Latitude: -37 57 ' 3.72030 '' Longitude: 144 25 ' 29.52440 ''
#Grid Convergence: -1 35 ' 3.65 '' Point Scale: 1.00023056
lat = degminsec2decimal_degrees(-37,57,03.7203)
lon = degminsec2decimal_degrees(144,25,29.5244)
zone, easting, northing = redfearn(lat,lon)
assert zone == 55
assert num.allclose(easting, 273741.297)
assert num.allclose(northing, 5796489.777)
def test_UTM_1(self):
#latitude: -37 39' 10.15610"
#Longitude: 143 55' 35.38390"
#Site Name: GDA-MGA: (UTM with GRS80 ellipsoid)
#Zone: 54
#Easting: 758173.797 Northing: 5828674.340
#Latitude: -37 39 ' 10.15610 '' Longitude: 143 55 ' 35.38390 ''
#Grid Convergence: 1 47 ' 19.36 '' Point Scale: 1.00042107
lat = degminsec2decimal_degrees(-37, 39, 10.15610)
lon = degminsec2decimal_degrees(143, 55, 35.38390)
assert num.allclose(lat, -37.65282114)
assert num.allclose(lon, 143.9264955)
zone, easting, northing = redfearn(lat, lon)
assert zone == 54
assert num.allclose(easting, 758173.797)
assert num.allclose(northing, 5828674.340)
def test_UTM_1(self):
#latitude: -37 39' 10.15610"
#Longitude: 143 55' 35.38390"
#Site Name: GDA-MGA: (UTM with GRS80 ellipsoid)
#Zone: 54
#Easting: 758173.797 Northing: 5828674.340
#Latitude: -37 39 ' 10.15610 '' Longitude: 143 55 ' 35.38390 ''
#Grid Convergence: 1 47 ' 19.36 '' Point Scale: 1.00042107
lat = degminsec2decimal_degrees(-37,39,10.15610)
lon = degminsec2decimal_degrees(143,55,35.38390)
assert num.allclose(lat, -37.65282114)
assert num.allclose(lon, 143.9264955)
zone, easting, northing = redfearn(lat,lon)
assert zone == 54
assert num.allclose(easting, 758173.797)
assert num.allclose(northing, 5828674.340)
def test_nonstandard_meridian_coinciding_with_native(self):
"""test_nonstandard_meridian_coinciding_with_native
This test will verify that redfearn can be used to project
points using an arbitrary central meridian that happens to
coincide with the standard meridian at the center of a UTM zone.
This is a preliminary test before testing this functionality
with a truly arbitrary non-standard meridian.
"""
# The file projection_test_points_z53.csv contains 10 points
# which straddle the boundary between UTM zones 53 and 54.
# They have been projected to zone 53 irrespective of where they
# belong.
path = get_pathname_from_package('anuga.coordinate_transforms')
for forced_zone in [53, 54]:
datafile = join(path, 'tests', 'data', 'projection_test_points_z%d.csv' % forced_zone)
fid = open(datafile)
for line in fid.readlines()[1:]:
fields = line.strip().split(',')
lon = float(fields[1])
lat = float(fields[2])
x = float(fields[3])
y = float(fields[4])
zone, easting, northing = redfearn(lat, lon,
zone=forced_zone)
# Check calculation
assert zone == forced_zone
assert num.allclose(x, easting)
assert num.allclose(y, northing)
def test_nonstandard_meridian_coinciding_with_native(self):
"""test_nonstandard_meridian_coinciding_with_native
This test will verify that redfearn can be used to project
points using an arbitrary central meridian that happens to
coincide with the standard meridian at the center of a UTM zone.
This is a preliminary test before testing this functionality
with a truly arbitrary non-standard meridian.
"""
# The file projection_test_points_z53.csv contains 10 points
# which straddle the boundary between UTM zones 53 and 54.
# They have been projected to zone 53 irrespective of where they
# belong.
path = get_pathname_from_package('anuga.coordinate_transforms')
for forced_zone in [53, 54]:
datafile = join(path, 'tests', 'data', 'projection_test_points_z%d.csv' % forced_zone)
fid = open(datafile)
for line in fid.readlines()[1:]:
fields = line.strip().split(',')
lon = float(fields[1])
lat = float(fields[2])
x = float(fields[3])
y = float(fields[4])
zone, easting, northing = redfearn(lat, lon,
zone=forced_zone)
# Check calculation
assert zone == forced_zone
assert num.allclose(x, easting)
assert num.allclose(y, northing)
def test_UTM_6_nonstandard_projection(self):
"""test_UTM_6_nonstandard_projection
Test that projections can be forced to
use other than native zone.
Data is from Geraldton, WA
"""
# First test native projection (zone 50)
zone, easting, northing = redfearn(-29.233299999,114.05)
assert zone == 50
assert num.allclose(easting, 213251.040253)
assert num.allclose(northing, 6762559.15978)
#Testing using the native zone
zone, easting, northing = redfearn(-29.233299999,114.05, zone=50)
assert zone == 50
assert num.allclose(easting, 213251.040253)
assert num.allclose(northing, 6762559.15978)
#Then project to zone 49
zone, easting, northing = redfearn(-29.233299999,114.05,zone=49)
assert zone == 49
assert num.allclose(easting, 796474.020057)
assert num.allclose(northing, 6762310.25162)
#First test native projection (zone 49)
zone, easting, northing = redfearn(-29.1333,113.9667)
assert zone == 49
assert num.allclose(easting, 788653.192779)
assert num.allclose(northing, 6773605.46384)
#Then project to zone 50
zone, easting, northing = redfearn(-29.1333,113.9667,zone=50)
assert zone == 50
assert num.allclose(easting, 204863.606467)
assert num.allclose(northing, 6773440.04726)
#Testing point on zone boundary
#First test native projection (zone 50)
zone, easting, northing = redfearn(-29.1667,114)
assert zone == 50
assert num.allclose(easting, 208199.768268)
assert num.allclose(northing, 6769820.01453)
#Then project to zone 49
zone, easting, northing = redfearn(-29.1667,114,zone=49)
assert zone == 49
assert num.allclose(easting, 791800.231817)
assert num.allclose(northing, 6769820.01453)
#Testing furthest point in Geraldton scenario)
#First test native projection (zone 49)
zone, easting, northing = redfearn(-28.2167,113.4167)
assert zone == 49
assert num.allclose(easting, 737178.16131)
assert num.allclose(northing, 6876426.38578)
#Then project to zone 50
zone, easting, northing = redfearn(-28.2167,113.4167,zone=50)
assert zone == 50
assert num.allclose(easting, 148260.567427)
assert num.allclose(northing, 6873587.50926)
#Testing outside GDA zone (New Zeland)
#First test native projection (zone 60)
zone, easting, northing = redfearn(-44,178)
assert zone == 60
assert num.allclose(easting, 580174.259843)
assert num.allclose(northing, 5127641.114461)
#Then project to zone 59
zone, easting, northing = redfearn(-44,178,zone=59)
assert zone == 59
assert num.allclose(easting, 1061266.922118)
assert num.allclose(northing, 5104249.395469)
#Then skip three zones 57 (native 60)
zone, easting, northing = redfearn(-44,178,zone=57)
assert zone == 57
assert num.allclose(easting, 2023865.527497)
assert num.allclose(northing, 4949253.934967)
# Note Projecting into the Northern Hemisphere Does not coincide
# redfearn or ArcMap conversions. The difference lies in
# False Northing which is 0 for the Northern hemisphere
# in the redfearn implementation but 10 million in Arc.
#
# But the redfearn implementation does coincide with
# Google Earth (he he)
#Testing outside GDA zone (Northern Hemisphere)
#First test native projection (zone 57)
zone, easting, northing = redfearn(44,156)
# Google Earth interpretation
assert zone == 57
assert num.allclose(easting, 259473.69)
assert num.allclose(northing, 4876249.13)
# ArcMap's interpretation
#assert zone == 57
#assert num.allclose(easting, 259473.678944)
#assert num.allclose(northing, 14876249.1268)
#Then project to zone 56
zone, easting, northing = redfearn(44,156,zone=56)
assert zone == 56
assert num.allclose(easting, 740526.321055)
assert num.allclose(northing, 4876249.13)
def test_UTM_6_nonstandard_projection(self):
"""test_UTM_6_nonstandard_projection
Test that projections can be forced to
use other than native zone.
Data is from Geraldton, WA
"""
# First test native projection (zone 50)
zone, easting, northing = redfearn(-29.233299999,114.05)
assert zone == 50
assert num.allclose(easting, 213251.040253)
assert num.allclose(northing, 6762559.15978)
#Testing using the native zone
zone, easting, northing = redfearn(-29.233299999,114.05, zone=50)
assert zone == 50
assert num.allclose(easting, 213251.040253)
assert num.allclose(northing, 6762559.15978)
#Then project to zone 49
zone, easting, northing = redfearn(-29.233299999,114.05,zone=49)
assert zone == 49
assert num.allclose(easting, 796474.020057)
assert num.allclose(northing, 6762310.25162)
#First test native projection (zone 49)
zone, easting, northing = redfearn(-29.1333,113.9667)
assert zone == 49
assert num.allclose(easting, 788653.192779)
assert num.allclose(northing, 6773605.46384)
#Then project to zone 50
zone, easting, northing = redfearn(-29.1333,113.9667,zone=50)
assert zone == 50
assert num.allclose(easting, 204863.606467)
assert num.allclose(northing, 6773440.04726)
#Testing point on zone boundary
#First test native projection (zone 50)
zone, easting, northing = redfearn(-29.1667,114)
assert zone == 50
assert num.allclose(easting, 208199.768268)
assert num.allclose(northing, 6769820.01453)
#Then project to zone 49
zone, easting, northing = redfearn(-29.1667,114,zone=49)
assert zone == 49
assert num.allclose(easting, 791800.231817)
assert num.allclose(northing, 6769820.01453)
#Testing furthest point in Geraldton scenario)
#First test native projection (zone 49)
zone, easting, northing = redfearn(-28.2167,113.4167)
assert zone == 49
assert num.allclose(easting, 737178.16131)
assert num.allclose(northing, 6876426.38578)
#Then project to zone 50
zone, easting, northing = redfearn(-28.2167,113.4167,zone=50)
assert zone == 50
assert num.allclose(easting, 148260.567427)
assert num.allclose(northing, 6873587.50926)
#Testing outside GDA zone (New Zeland)
#First test native projection (zone 60)
zone, easting, northing = redfearn(-44,178)
assert zone == 60
assert num.allclose(easting, 580174.259843)
assert num.allclose(northing, 5127641.114461)
#Then project to zone 59
zone, easting, northing = redfearn(-44,178,zone=59)
assert zone == 59
assert num.allclose(easting, 1061266.922118)
assert num.allclose(northing, 5104249.395469)
#Then skip three zones 57 (native 60)
zone, easting, northing = redfearn(-44,178,zone=57)
assert zone == 57
assert num.allclose(easting, 2023865.527497)
assert num.allclose(northing, 4949253.934967)
# Note Projecting into the Northern Hemisphere Does not coincide
# redfearn or ArcMap conversions. The difference lies in
# False Northing which is 0 for the Northern hemisphere
# in the redfearn implementation but 10 million in Arc.
#
# But the redfearn implementation does coincide with
# Google Earth (he he)
#Testing outside GDA zone (Northern Hemisphere)
#First test native projection (zone 57)
zone, easting, northing = redfearn(44,156)
# Google Earth interpretation
assert zone == 57
assert num.allclose(easting, 259473.69)
assert num.allclose(northing, 4876249.13)
# ArcMap's interpretation
#assert zone == 57
#assert num.allclose(easting, 259473.678944)
#assert num.allclose(northing, 14876249.1268)
#Then project to zone 56
zone, easting, northing = redfearn(44,156,zone=56)
assert zone == 56
assert num.allclose(easting, 740526.321055)
assert num.allclose(northing, 4876249.13)
