1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 | #!/usr/bin/python2.5 # Copyright (C) 2007 Google Inc. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import bisect from gtfsobjectbase import GtfsObjectBase import problems as problems_module import util import sys class ShapePoint(GtfsObjectBase): """This class represents a single shape point. Attributes: shape_id: represents the shape_id of the point shape_pt_lat: represents the latitude of the point shape_pt_lon: represents the longitude of the point shape_pt_sequence: represents the sequence of the point shape_dist_traveled: represents the distance of the point """ _REQUIRED_FIELD_NAMES = ['shape_id', 'shape_pt_lat', 'shape_pt_lon', 'shape_pt_sequence'] _FIELD_NAMES = _REQUIRED_FIELD_NAMES + ['shape_dist_traveled'] def __init__(self, shape_id=None, lat=None, lon=None,seq=None, dist=None, field_dict=None): """Initialize a new ShapePoint object. Args: field_dict: A dictionary mapping attribute name to unicode string """ self._schedule = None if field_dict: if isinstance(field_dict, self.__class__): for k, v in field_dict.iteritems(): self.__dict__[k] = v else: self.__dict__.update(field_dict) else: self.shape_id = shape_id self.shape_pt_lat = lat self.shape_pt_lon = lon self.shape_pt_sequence = seq self.shape_dist_traveled = dist def ParseAttributes(self, problems): """Parse all attributes, calling problems as needed. Return True if all of the values are valid. """ if util.IsEmpty(self.shape_id): problems.MissingValue('shape_id') return try: if not isinstance(self.shape_pt_sequence, int): self.shape_pt_sequence = \ util.NonNegIntStringToInt(self.shape_pt_sequence, problems) elif self.shape_pt_sequence < 0: problems.InvalidValue('shape_pt_sequence', self.shape_pt_sequence, 'Value should be a number (0 or higher)') except (TypeError, ValueError): problems.InvalidValue('shape_pt_sequence', self.shape_pt_sequence, 'Value should be a number (0 or higher)') return try: if not isinstance(self.shape_pt_lat, (int, float)): self.shape_pt_lat = util.FloatStringToFloat(self.shape_pt_lat, problems) if abs(self.shape_pt_lat) > 90.0: problems.InvalidValue('shape_pt_lat', self.shape_pt_lat) return except (TypeError, ValueError): problems.InvalidValue('shape_pt_lat', self.shape_pt_lat) return try: if not isinstance(self.shape_pt_lon, (int, float)): self.shape_pt_lon = util.FloatStringToFloat(self.shape_pt_lon, problems) if abs(self.shape_pt_lon) > 180.0: problems.InvalidValue('shape_pt_lon', self.shape_pt_lon) return except (TypeError, ValueError): problems.InvalidValue('shape_pt_lon', self.shape_pt_lon) return if abs(self.shape_pt_lat) < 1.0 and abs(self.shape_pt_lon) < 1.0: problems.InvalidValue('shape_pt_lat', self.shape_pt_lat, 'Point location too close to 0, 0, which means ' 'that it\'s probably an incorrect location.', type=problems_module.TYPE_WARNING) return if self.shape_dist_traveled == '': self.shape_dist_traveled = None if (self.shape_dist_traveled is not None and not isinstance(self.shape_dist_traveled, (int, float))): try: self.shape_dist_traveled = \ util.FloatStringToFloat(self.shape_dist_traveled, problems) except (TypeError, ValueError): problems.InvalidValue('shape_dist_traveled', self.shape_dist_traveled, 'This value should be a positive number.') return if self.shape_dist_traveled is not None and self.shape_dist_traveled < 0: problems.InvalidValue('shape_dist_traveled', self.shape_dist_traveled, 'This value should be a positive number.') return return True |