당신의 질문은 나를 궁금하게 만들었습니다.
이 솔루션은 Python 콘솔의 QGIS 2.x에서만 작동합니다.
내 의견에서 언급했듯이 여기에 파이썬으로 호를 만드는 아이디어가 있습니다.
두 개의 포인트 레이어가 있습니다.
나는. 수도를 보유하고있는 분 (ID, 수도)
ii. 도시 (ID, 마을, 통근자)를 소지 한 분
통근자의 금액은 "은행권으로 분리"되며 이는 아크를 형성하는 선이됩니다. 따라서 371 통근자는 3x100, 1x50, 2x10 및 1x1과 총 7 개의 지폐 조합입니다. 그런 다음 선은 규칙 기반 스타일로 스타일이 지정됩니다.
코드는 다음과 같습니다.
from qgis.gui import *
from qgis.utils import *
from qgis.core import *
from PyQt4 import QtGui, uic
from PyQt4.QtGui import *
from PyQt4.QtCore import *
for lyr in QgsMapLayerRegistry.instance().mapLayers().values():
if lyr.name() == "capital":
capital_layer = lyr
for lyr in QgsMapLayerRegistry.instance().mapLayers().values():
if lyr.name() == "town":
town_layer = lyr
# creating the memory layer
d_lyr = QgsVectorLayer('LineString', 'distance', 'memory')
QgsMapLayerRegistry.instance().addMapLayer(d_lyr)
prov = d_lyr.dataProvider()
prov.addAttributes( [ QgsField("id", QVariant.Int), QgsField("banknote",QVariant.Int)])
# function to create the banknotes
def banknoteOutput(number):
number_list = []
number_list.append(number)
banknote_count = []
temp_list = []
banknote_list = []
for n in number_list:
total_sum = 0
total = int(n/100)
total_sum = total_sum + total
if total > 0:
banknote_count.append([total, 100])
n = n-(total*100)
total = int(n/50)
total_sum = total_sum + total
if total > 0:
banknote_count.append([total, 50])
n = n-(total*50)
total = int(n/10)
total_sum = total_sum + total
if total > 0:
banknote_count.append([total, 10])
n = n-(total*10)
total = int(n/5)
total_sum = total_sum + total
if total > 0:
banknote_count.append([total, 5])
n = n-(total*5)
total = int(n/1)
total_sum = total_sum + total
if total > 0:
banknote_count.append([total, 1])
for i in banknote_count:
temp_list.append(i*i[0])
banknote_list = [item for sublist in temp_list for item in sublist][1::2]
return banknote_list
# creating lines with the amount of banknotes
for capital in capital_layer.getFeatures():
for town in town_layer.getFeatures():
commuter_splitting = banknoteOutput(town['commuters'])
for i,banknote in enumerate(commuter_splitting):
angle = 2
distance = QgsDistanceArea()
distance.measureLine(capital.geometry().asPoint(), town.geometry().asPoint())
vect = QgsFeature()
vect.setGeometry(QgsGeometry.fromPolyline([capital.geometry().asPoint(), town.geometry().asPoint()]))
vect.geometry().rotate(0+(i*angle), capital.geometry().asPoint())
vect.setAttributes([int(town["id"]), int(banknote)])
prov.addFeatures([vect])
d_lyr.updateExtents()
d_lyr.triggerRepaint()
d_lyr.updateFields()
결과는 다음과 같습니다.
업데이트 : 구별 남성 / 여성
4 메모리 계층이됩니다.
from qgis.gui import *
from qgis.utils import *
from qgis.core import *
from PyQt4 import QtGui, uic
from PyQt4.QtGui import *
from PyQt4.QtCore import *
for lyr in QgsMapLayerRegistry.instance().mapLayers().values():
if lyr.name() == "capital":
capital_layer = lyr
for lyr in QgsMapLayerRegistry.instance().mapLayers().values():
if lyr.name() == "town":
town_layer = lyr
# function to create the banknotes
def banknoteOutput(number):
number_list = []
number_list.append(number)
banknote_count = []
temp_list = []
banknote_list = []
for n in number_list:
total_sum = 0
total = int(n/100)
total_sum = total_sum + total
if total > 0:
banknote_count.append([total, 100])
n = n-(total*100)
total = int(n/50)
total_sum = total_sum + total
if total > 0:
banknote_count.append([total, 50])
n = n-(total*50)
total = int(n/10)
total_sum = total_sum + total
if total > 0:
banknote_count.append([total, 10])
n = n-(total*10)
total = int(n/5)
total_sum = total_sum + total
if total > 0:
banknote_count.append([total, 5])
n = n-(total*5)
total = int(n/1)
total_sum = total_sum + total
if total > 0:
banknote_count.append([total, 1])
for i in banknote_count:
temp_list.append(i*i[0])
banknote_list = [item for sublist in temp_list for item in sublist][1::2]
return banknote_list
# creating the male memory layer
cmt_male = QgsVectorLayer('LineString', 'Commuters_Male', 'memory')
QgsMapLayerRegistry.instance().addMapLayer(cmt_male)
prov_male = cmt_male.dataProvider()
prov_male.addAttributes( [ QgsField("id", QVariant.Int), QgsField("banknote",QVariant.Int)])
# creating the male polygon memory layer
cmt_male_polygon = QgsVectorLayer('Polygon', 'Commuters_Male_Poly', 'memory')
QgsMapLayerRegistry.instance().addMapLayer(cmt_male_polygon)
prov_cmt_male_polygon = cmt_male_polygon.dataProvider()
prov_cmt_male_polygon.addAttributes( [ QgsField("id", QVariant.Int), QgsField("banknote",QVariant.Int)])
# creating lines with the amount of banknotes
for capital in capital_layer.getFeatures():
for town in town_layer.getFeatures():
commuter_splitting = banknoteOutput(town['cmt_male'])
points = []
for i,banknote in enumerate(reversed(commuter_splitting)):
angle = 2
distance = QgsDistanceArea()
distance.measureLine(capital.geometry().asPoint(), town.geometry().asPoint())
vect = QgsFeature()
vect.setGeometry(QgsGeometry.fromPolyline([capital.geometry().asPoint(), town.geometry().asPoint()]))
vect.geometry().rotate(0+(i*angle), capital.geometry().asPoint())
vect.setAttributes([int(town["id"]), int(banknote)])
points.append(vect.geometry().asPolyline()[1])
prov_male.addFeatures([vect])
polygon = QgsFeature()
points.insert(0,capital.geometry().asPoint())
points.insert(len(points),capital.geometry().asPoint())
polygon.setGeometry(QgsGeometry.fromPolygon([points]))
polygon.setAttributes([1, 2])
prov_cmt_male_polygon.addFeatures([polygon])
cmt_male.updateExtents()
cmt_male.triggerRepaint()
cmt_male.updateFields()
cmt_male_polygon.updateExtents()
cmt_male_polygon.triggerRepaint()
cmt_male_polygon.updateFields()
# creating the female memory layer
cmt_female = QgsVectorLayer('LineString', 'Commuters_Female', 'memory')
QgsMapLayerRegistry.instance().addMapLayer(cmt_female)
prov_female = cmt_female.dataProvider()
prov_female.addAttributes( [ QgsField("id", QVariant.Int), QgsField("banknote",QVariant.Int)])
# creating the female polygon memory layer
cmt_female_polygon = QgsVectorLayer('Polygon', 'Commuters_Female_Poly', 'memory')
QgsMapLayerRegistry.instance().addMapLayer(cmt_female_polygon)
prov_cmt_female_polygon = cmt_female_polygon.dataProvider()
prov_cmt_female_polygon.addAttributes( [ QgsField("id", QVariant.Int), QgsField("banknote",QVariant.Int)])
# creating lines with the amount of banknotes
for capital in capital_layer.getFeatures():
for town in town_layer.getFeatures():
commuter_splitting = banknoteOutput(town['cmt_female'])
points = []
for i,banknote in enumerate(commuter_splitting):
angle = 2
distance = QgsDistanceArea()
distance.measureLine(capital.geometry().asPoint(), town.geometry().asPoint())
vect = QgsFeature()
vect.setGeometry(QgsGeometry.fromPolyline([capital.geometry().asPoint(), town.geometry().asPoint()]))
vect.geometry().rotate(-angle-(i*angle), capital.geometry().asPoint())
vect.setAttributes([int(town["id"]), int(banknote)])
points.append(vect.geometry().asPolyline()[1])
prov_female.addFeatures([vect])
polygon = QgsFeature()
points.insert(0,capital.geometry().asPoint())
points.insert(len(points),capital.geometry().asPoint())
polygon.setGeometry(QgsGeometry.fromPolygon([points]))
polygon.setAttributes([1, 2])
prov_cmt_female_polygon.addFeatures([polygon])
cmt_female.updateExtents()
cmt_female.triggerRepaint()
cmt_female.updateFields()
cmt_female_polygon.updateExtents()
cmt_female_polygon.triggerRepaint()
cmt_female_polygon.updateFields()
결과는 다음과 같습니다.
지도 제작상의 관점에서 이상적이지 않은 것 :
원호의 크기는 큰 원호가 더 많은 통근자를 나타낼 수있는 방식으로 언뜻보기에 자극적 일 수 있습니다. 더 많은 통근자를 가진 다른 통근자 (311 통근자 / 5 지폐)보다 적은 통근자 (289 통근자 / 11 지폐)로 아크가 클 수 있습니다.
