[英]How to add PostGIS SQL SELECT query as layer to QGIS 3 project using Python console?
[英]How to select and zoom to a layer in QGIS using Python
我正在使用 QGIS 2.8.1,我想选择名为“tempshpfile”的 shapefile 并缩放到该多边形 shapefile 上的图层。
我的代码是:
import ogr,os
from PyQt4.QtGui import *
from PyQt4.QtCore import *
from qgis.core import *
import qgis.utils
import glob
import processing
from processing.core.Processing import Processing
from PyQt4.QtCore import QTimer
Processing.initialize()
Processing.updateAlgsList()
# Add array of address below
allFiles = ["C:/Shapefiles/Map_0077421.shp"]
filesLen = len(allFiles)
TexLayer = "C:/Texas_NAD27/Texas_NAD27.shp"
for lop in range(filesLen):
wb = QgsVectorLayer(allFiles[lop], 'tempshpfile', 'ogr')
wbTex = QgsVectorLayer(TexLayer, 'TexasGrid', 'ogr')
QgsMapLayerRegistry.instance().addMapLayer(wb)
QgsMapLayerRegistry.instance().addMapLayer(wbTex)
由于您的wb
层已经注册,因此只需在循环后激活该层:
qgis.utils.iface.setActiveLayer(wb)
并缩放到活动图层的范围:
qgis.utils.iface.zoomToActiveLayer()
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