read_qgis_polygons.py

from qgis.core import QgsProject
# modelin istedigi boyut bu
# poligon bir sekilde bundan buyuk veya kucuk olursa
# stretch/shrink etmek gerekecek.
width, height, nchannels = (224, 244, 3)

project = QgsProject.instance()
# Post-earthquake raster katmani
post_eq_rlayer = project.mapLayersByName('Hatay_PHR1B_20230208_3')[0]
print(post_eq_rlayer)

# hasarli bina poligonlari
collapsed_buildings_vlayer = project.mapLayersByName('kirmizi_10x10_utm37')[0]

# (samples, width, height, channels)
X_training = np.zeros((0,width,height,nchannels))
y_training = np.zeros((0,0)) # (samples, class)
collapsed_buildings_features = collapsed_buildings_vlayer.getFeatures()
for feature in collapsed_buildings_features:
    geom = feature.geometry()
    geomSingleType = QgsWkbTypes.isSingleType(geom.wkbType())
    if geom.type() == QgsWkbTypes.PolygonGeometry:
        if geomSingleType:
            x = geom.asPolygon()
            print("Polygon: ", x, "Area: ", geom.area())
        else:
            x = geom.asMultiPolygon()
            print("MultiPolygon: ", x, "Area: ", geom.area())
        attrs = feature.attributes()
        print(attrs)
        label, set_type, sample_id, dummy = attrs 
        if set_type == 'training':
            # raster layer'dan veri cek
            # simdilik sifirlardan olusmus bir matris uretiyorum
            pixels = np.zeros((1, width, height, nchannels))
            X_training = np.append(X_training,pixels,axis=0)