def xyz_json_to_feat(feat_json, fields):
"""
Convert xyz geojson to feature, given fields
"""
names = fields.names()
qattrs = list()
# handle xyz id
v = feat_json.get(XYZ_ID, "")
val = QVariant(v)
qattrs.append([QGS_XYZ_ID, val])
if QGS_XYZ_ID not in names:
fields.append(make_field(QGS_XYZ_ID, val))
props = feat_json.get("properties")
if isinstance(props, dict):
rename_special_props(props) # rename fid in props
attrs = list(_attrs(props))
for k, v in attrs:
val = QVariant(v)
# if not val.isValid():
# val = QVariant("")
if not val.type() in valid_fieldTypes:
for cast in [QVariant.Int, QVariant.String]:
if val.canConvert(cast):
val.convert(cast)
break
if not val.type() in valid_qvariant:
print_qgis("Invalid type", k, val.typeName())
continue
if k not in names:
fields.append(make_field(k, val))
qattrs.append([k, val])
feat = QgsFeature(fields)
for k, v in qattrs:
feat.setAttribute(k, v)
geom = feat_json.get("geometry")
if geom is not None:
s = json.dumps(geom)
geom_ = QgsGeometry.fromWkt(
ogr.CreateGeometryFromJson(s).ExportToWkt())
feat.setGeometry(geom_)
return feat
def _single_feature(feat_json, fields):
# adapt to existing fields
feat = QgsFeature()
names = fields.names()
if QGS_ID in names: names.remove(QGS_ID)
names_normal = list(map(normal_field_name, names))
qattrs = list()
# handle xyz id
v = feat_json.get(XYZ_ID, "")
val = QVariant(v)
qattrs.append([QGS_XYZ_ID, val])
if QGS_XYZ_ID not in names:
fields.append(make_field(QGS_XYZ_ID, val))
props = feat_json.get("properties")
if not props is None:
attrs = list(_attrs(props))
for k, v in attrs:
val = QVariant(v)
if not val.isValid():
val = QVariant("")
# if not val.type() in valid_qvariant:
if not val.type() in valid_fieldTypes:
for cast in [QVariant.Int, QVariant.String]:
if val.canConvert(cast):
val.convert(cast)
break
if not val.type() in valid_qvariant:
print_qgis("Invalid type", k, val.typeName())
continue
if k not in names_normal:
k = unique_field_name(k, len(fields))
fields.append(make_field(k, val))
else:
idx = names_normal.index(k)
k = names[idx]
qattrs.append([k, val])
feat.setFields(fields)
for k, v in qattrs:
feat.setAttribute(k, v)
return feat
