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Exemplo de criação de pontos no QGIS
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def create_point(name): | |
uri = "point?crs=epsg:4326" | |
points = QgsVectorLayer(uri, name, 'memory') | |
QgsProject.instance().addMapLayer(points) | |
# chamando o provider para poder criar | |
# tanto os campos, quanto validar todo o processo: | |
provider = points.dataProvider() | |
# definindo os campos da minha camada | |
attributes = [ | |
QgsField('id', QVariant.Int), | |
QgsField('nome', QVariant.String), | |
QgsField('x', QVariant.Double), | |
QgsField('y', QVariant.Double), | |
] | |
# adicionando os campos a camada | |
provider.addAttributes(attributes) | |
# atualiza a tabela de atributos | |
points.updateFields() | |
def add_point_feature(lyr_name, x, y, id, name): | |
lyr = QgsProject.instance().mapLayersByName(lyr_name)[0] | |
provider = lyr.dataProvider() | |
feat = QgsFeature() | |
feat.setGeometry(QgsPoint(x,y)) | |
feat.setAttributes([ | |
id, | |
name, | |
x, | |
y | |
]) | |
provider.addFeatures([feat]) | |
create_point('pontos') | |
pontos_list = [ | |
{'nome': 'A', 'x': -36.79, 'y': -7.24}, | |
{'nome': 'B', 'x': -36.87, 'y': -7.94}, | |
{'nome': 'C', 'x': -35.20, 'y': -7.15}, | |
{'nome': 'D', 'x': -38.49, 'y': -6.71}, | |
] | |
i = 0 | |
for ponto in pontos_list: | |
i += 1 | |
add_point_feature('pontos', ponto['x'], ponto['y'], i, ponto['nome']) | |
#add_point_feature('pontos', -36.883, -6.951, 1, 'Ponto 1') | |
#add_point_feature('pontos', -36.870, -6.950, 2, 'Ponto 2') | |
#add_point_feature('pontos', -36.860, -6.852, 3, 'Ponto 3') |
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