Source code for svir.dialogs.load_hmaps_as_layer_dialog

# -*- coding: utf-8 -*-
# /***************************************************************************
# Irmt
#                                 A QGIS plugin
# OpenQuake Integrated Risk Modelling Toolkit
#                              -------------------
#        begin                : 2013-10-24
#        copyright            : (C) 2014 by GEM Foundation
#        email                : devops@openquake.org
# ***************************************************************************/
#
# OpenQuake is free software: you can redistribute it and/or modify it
# under the terms of the GNU Affero General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# OpenQuake is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with OpenQuake.  If not, see <http://www.gnu.org/licenses/>.

import numpy
from qgis.core import QgsFeature, QgsGeometry, QgsPoint
from svir.dialogs.load_output_as_layer_dialog import LoadOutputAsLayerDialog
from svir.calculations.calculate_utils import add_numeric_attribute
from svir.utilities.utils import (WaitCursorManager,
                                  LayerEditingManager,
                                  log_msg,
                                  )
from svir.utilities.shared import DEBUG


[docs]class LoadHazardMapsAsLayerDialog(LoadOutputAsLayerDialog): """ Modal dialog to load hazard maps from an oq-engine output, as layer """ def __init__(self, iface, viewer_dock, output_type='hmaps', path=None, mode=None): assert output_type == 'hmaps' LoadOutputAsLayerDialog.__init__( self, iface, viewer_dock, output_type, path, mode) self.setWindowTitle( 'Load hazard maps from NPZ, as layer') self.create_load_selected_only_ckb() self.create_rlz_selector() self.create_imt_selector() self.create_poe_selector() if self.path: self.npz_file = numpy.load(self.path, 'r') self.populate_out_dep_widgets() self.adjustSize() self.set_ok_button()
[docs] def set_ok_button(self): self.ok_button.setEnabled( bool(self.path) and self.poe_cbx.currentIndex() != -1)
[docs] def on_rlz_changed(self): self.dataset = self.npz_file[self.rlz_cbx.currentText()] self.imts = {} for name in self.dataset.dtype.names[2:]: imt, poe = name.split('-') if imt not in self.imts: self.imts[imt] = [poe] else: self.imts[imt].append(poe) self.imt_cbx.clear() self.imt_cbx.setEnabled(True) self.imt_cbx.addItems(self.imts.keys()) self.set_ok_button()
[docs] def on_imt_changed(self): self.imt = self.imt_cbx.currentText() self.poe_cbx.clear() self.poe_cbx.setEnabled(True) if self.imt: self.poe_cbx.addItems(self.imts[self.imt]) self.set_ok_button()
[docs] def build_layer_name(self, rlz, **kwargs): imt = self.imt_cbx.currentText() poe = self.poe_cbx.currentText() self.default_field_name = '%s-%s' % (imt, poe) layer_name = "hazard_map_%s" % rlz return layer_name
[docs] def get_field_names(self, **kwargs): field_names = list(self.dataset.dtype.names) return field_names
[docs] def add_field_to_layer(self, field_name): # NOTE: add_numeric_attribute uses LayerEditingManager added_field_name = add_numeric_attribute( field_name, self.layer) return added_field_name
[docs] def read_npz_into_layer(self, field_names, **kwargs): with LayerEditingManager(self.layer, 'Reading npz', DEBUG): feats = [] for row in self.dataset: # add a feature feat = QgsFeature(self.layer.pendingFields()) for field_name_idx, field_name in enumerate(field_names): if field_name in ['lon', 'lat']: continue # NOTE: without casting to float, it produces a # null because it does not recognize the # numpy type value = float(row[field_name_idx]) feat.setAttribute(field_name, value) feat.setGeometry(QgsGeometry.fromPoint( QgsPoint(row[0], row[1]))) feats.append(feat) added_ok = self.layer.addFeatures(feats, makeSelected=False) if not added_ok: msg = 'There was a problem adding features to the layer.' log_msg(msg, level='C', message_bar=self.iface.messageBar())
[docs] def load_from_npz(self): for rlz in self.rlzs: if (self.load_selected_only_ckb.isChecked() and rlz != self.rlz_cbx.currentText()): continue with WaitCursorManager('Creating layer for ' ' realization "%s"...' % rlz, self.iface): self.build_layer(rlz) self.style_maps() if self.npz_file is not None: self.npz_file.close()