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domain_data.py
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domain_data.py
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"""
Berisi class-class untuk mengatur domain
penggunaan:
- buat object TopDomain (misal tdm = TopDomain() )
isi nilai lat, lon, w, h, dan dx dy lalu panggil tdm.process_boundary()
- buat object SubDomain (misal cdm = SubDomain(tdm, 20, 20, 3) )
isi nilai w dan h, lalu panggil cdm.process_boundary()
- SubDomain dapat memiliki parent berupa TopDomain atau SubDomain lain (nesting)
-- gunakan cdm.get_cell_boundary_latlon(25,25) untuk mendapatkan koordinat
pojok kiri bawah dan pojok kanan atas sel(25,25) dalam latlon
TODO: get_cell_boundary_utm harus dimodif agar dapat menerima parameter zone dan hem
_________________
Arif Widi Nugroho
arif@hexarius.com
"""
import utm
class Domain():
def __init__(self):
self.w = None # ukuran sel arah horizontal (mis: 90 --> e_we - 1)
self.h = None # ukuran sel arah vertikal (mis: 90 --> e_sn - 1)
self.dx = None # delta x (meter)
self.dy = None
self.lat = None
self.lon = None
self.x = None # easting
self.y = None # northing
self.zone = None
self.hem = None
self.ll_lat = None # latitude pojok kiri bawah (lower left)
self.ll_lon = None # longitude pojok kiri bawah
self.tr_lat = None # latitude pojok kanan atas (top right)
self.tr_lon = None # longitude pojok kanan atas
self.ll_x = None # easting pojok kiri bawah
self.ll_y = None # northing pojok kiri bawag
self.tr_x = None # pojok kanan atas
self.tr_y = None
self.processed_to_utm = False
def process_to_utm(self, force=False):
"""
Memproses lat/lon menjadi x, y, zone & hem
Harus dipanggil sebelum menggunakan fungsi-fungsi yang ada dalam subclass
"""
if (force == False) and self.processed_to_utm:
return False
flag = False
try:
self.zone, self.hem = utm.get_zone_hem(self.lat, self.lon)
self.x, self.y = utm.convert_to_utm(self.lat, self.lon)
flag = True
self.processed_to_utm = True
except Exception as ex:
print 'Exception: process_to_utm -->', ex
return flag
class TopDomain(Domain):
def __init__(self):
Domain.__init__(self)
def process_boundary(self):
self.process_to_utm()
dx = (self.w / 2) * self.dx
dy = (self.h / 2) * self.dy
ll_x = self.x - dx
ll_y = self.y - dy
tr_x = self.x + dx
tr_y = self.y + dy
self.ll_x = ll_x
self.ll_y = ll_y
self.tr_x = tr_x
self.tr_y = tr_y
self.ll_lat, self.ll_lon = utm.convert_to_latlon(ll_x, ll_y, self.zone, self.hem)
self.tr_lat, self.tr_lon = utm.convert_to_latlon(tr_x, tr_y, self.zone, self.hem)
def get_cell_boundary_latlon(self, x, y):
#posisi sel dimulai dari 0
dx = ((self.w / 2) - x ) * self.dx
dy = ((self.h / 2) - y ) * self.dy
ll_x = self.x - dx
ll_y = self.y - dy
tr_x = self.x - dx + self.dx
tr_y = self.y - dy + self.dy
ll = utm.convert_to_latlon(ll_x, ll_y, self.zone, self.hem)
tr = utm.convert_to_latlon(tr_x, tr_y, self.zone, self.hem)
#[ [lat, lon], [lat, lon] ]
return ll, tr
def get_cell_boundary_utm(self, x, y, zone=None, hem=None):
if zone==None:
zone = self.zone
if hem==None:
hem = self.hem
ll, tr = self.get_cell_boundary_latlon(x, y)
utm_ll = utm.convert_to_utm_fixzone(ll[0], ll[1], zone, hem)
utm_tr = utm.convert_to_utm_fixzone(tr[0], tr[1], zone, hem)
return utm_ll, utm_tr
def get_cell_boundary_utm_old(self, x, y):
#posisi sel dimulai dari 0
dx = ((self.w / 2) - x ) * self.dx
dy = ((self.h / 2) - y ) * self.dy
ll_x = self.x - dx
ll_y = self.y - dy
tr_x = self.x - dx + self.dx
tr_y = self.y - dy + self.dy
# [ [x, y], [x, y] ]
return (ll_x, ll_y), (tr_x, tr_y)
class SubDomain(Domain):
def __init__(self, parent, parent_start_x, parent_start_y, ratio):
Domain.__init__(self)
self.ratio = ratio # grid ratio
self.parent_start_x = parent_start_x # starting grid relatif terhadap domain induk
self.parent_start_y = parent_start_y
self.processed_to_utm = True
self.parent = parent
try:
self.init()
except Exception as ex:
print "Subdomain initialization error: ", ex
def init(self):
#menentukan boundary subdomain dari data domain induk
bnd = self.parent.get_cell_boundary_utm(self.parent_start_x, self.parent_start_y)
self.ll_x = bnd[0][0]
self.ll_y = bnd[0][1]
bnd = self.parent.get_cell_boundary_latlon(self.parent_start_x, self.parent_start_y)
self.ll_lat = bnd[0][0]
self.ll_lon = bnd[0][1]
self.zone = self.parent.zone
self.hem = self.parent.hem
self.dx = self.parent.dx / self.ratio
self.dy = self.parent.dy / self.ratio
def process_boundary(self):
#menentukan boundary subdomain dari data domain induk
dx = self.w * self.dx
dy = self.h * self.dy
self.tr_x = self.ll_x + dx
self.tr_y = self.ll_y + dy
self.tr_lat, self.tr_lon = utm.convert_to_latlon(self.tr_x, self.tr_y, self.zone, self.hem)
#titik tengah domain
self.x = self.ll_x + self.dx * (self.w / 2)
self.y = self.ll_y + self.dy * (self.h / 2)
self.lat, self.lon = utm.convert_to_latlon(self.x, self.y, self.zone, self.hem)
def get_cell_boundary_latlon(self, x, y):
#posisi sel dimulai dari 0
dx = x * self.dx
dy = y * self.dy
ll_x = self.ll_x + dx
ll_y = self.ll_y + dy
tr_x = self.ll_x + dx + self.dx
tr_y = self.ll_y + dy + self.dy
ll = utm.convert_to_latlon(ll_x, ll_y, self.zone, self.hem)
tr = utm.convert_to_latlon(tr_x, tr_y, self.zone, self.hem)
#[ [lat, lon], [lat, lon] ]
return ll, tr
def get_cell_boundary_utm(self, x, y, zone=None, hem=None):
if zone==None:
zone = self.zone
if hem==None:
hem = self.hem
ll, tr = self.get_cell_boundary_latlon(x, y)
utm_ll = utm.convert_to_utm_fixzone(ll[0], ll[1], zone, hem)
utm_tr = utm.convert_to_utm_fixzone(tr[0], tr[1], zone, hem)
return utm_ll, utm_tr
def get_cell_boundary_utm_old(self, x, y):
#posisi sel dimulai dari 0
dx = x * self.dx
dy = y * self.dy
ll_x = self.ll_x + dx
ll_y = self.ll_y + dy
tr_x = self.ll_x + dx + self.dx
tr_y = self.ll_y + dy + self.dy
ll = (ll_x, ll_y)
tr = (tr_x, tr_y)
#[ [x, y], [x, y] ]
return ll, tr
if __name__ == '__main__':
dm = TopDomain()
dm.lat = -7.0
dm.lon = 107.0
dm.h = 90
dm.w = 90
dm.dx = 9000
dm.dy = 9000
# dm.process_to_utm()
dm.process_boundary()
print dm.ll_lat, dm.ll_lon
print dm.tr_lat, dm.tr_lon
# print dm.get_cell_boundary_utm(20, 20)
print dm.get_cell_boundary_latlon(89, 89)
print dm.dx, dm.dy
print '-----------------------'
cdm = SubDomain(dm, 0, 0, 3)
cdm.w = 90
cdm.h = 90
cdm.process_boundary()
# print cdm.ll_x, cdm.ll_y, cdm.tr_x, cdm.tr_y
print cdm.ll_lat, cdm.ll_lon, cdm.tr_lat, cdm.tr_lon
# print cdm.x, cdm.y, cdm.lat, cdm.lon
print cdm.get_cell_boundary_utm(89,89)
print cdm.dx, cdm.dy
print '-----------------------'
ccdm = SubDomain(cdm, 0, 0, 3)
ccdm.w = 90
ccdm.h = 90
ccdm.process_boundary()
# print cdm.ll_x, cdm.ll_y, cdm.tr_x, cdm.tr_y
print ccdm.ll_lat, ccdm.ll_lon, ccdm.tr_lat, ccdm.tr_lon
# print cdm.x, cdm.y, cdm.lat, cdm.lon
print ccdm.get_cell_boundary_utm(89,89)
print ccdm.dx, ccdm.dy
print '-----------------------'