Source code for svir.dialogs.load_hcurves_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 (LayerEditingManager,
                                  log_msg,
                                  WaitCursorManager,
                                  )
from svir.utilities.shared import DEBUG


[docs]class LoadHazardCurvesAsLayerDialog(LoadOutputAsLayerDialog): """ Modal dialog to load hazard curves from an oq-engine output, as layer """ def __init__(self, iface, viewer_dock, output_type='hcurves', path=None, mode=None): assert output_type == 'hcurves' LoadOutputAsLayerDialog.__init__( self, iface, viewer_dock, output_type, path, mode) self.setWindowTitle( 'Load hazard curves from NPZ, as layer') self.create_num_sites_indicator() 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))
[docs] def populate_dataset(self): self.rlzs_or_stats = self.npz_file['all'].dtype.names[2:] self.dataset = self.npz_file['all']
[docs] def show_num_sites(self): self.num_sites_lbl.setText( self.num_sites_msg % self.dataset.shape)
[docs] def populate_out_dep_widgets(self): self.populate_dataset() self.show_num_sites()
[docs] def build_layer_name(self, **kwargs): investigation_time = self.get_investigation_time() layer_name = "hazard_curves_%sy" % investigation_time return layer_name
[docs] def get_field_names(self, **kwargs): field_names = [] for rlz_or_stat in self.rlzs_or_stats: for imt in self.dataset[rlz_or_stat].dtype.names: for iml in self.dataset[rlz_or_stat][imt].dtype.names: field_name = "%s_%s_%s" % (rlz_or_stat, imt, iml) field_names.append(field_name) return field_names
[docs] def add_field_to_layer(self, field_name): 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): lons = self.npz_file['all']['lon'] lats = self.npz_file['all']['lat'] feats = [] for row_idx, row in enumerate(self.dataset): feat = QgsFeature(self.layer.pendingFields()) for field_name_idx, field_name in enumerate(field_names): rlz_or_stat, imt, iml = field_name.split('_') poe = row[rlz_or_stat][imt][iml] feat.setAttribute(field_name, float(poe)) feat.setGeometry(QgsGeometry.fromPoint( QgsPoint(lons[row_idx], lats[row_idx]))) 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): with WaitCursorManager('Creating layer...', self.iface): self.build_layer() self.style_curves() if self.npz_file is not None: self.npz_file.close()