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/>.

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,
                                  extract_npz,
                                  )
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, session, hostname, calc_id, output_type='hmaps', path=None, mode=None): assert output_type == 'hmaps' LoadOutputAsLayerDialog.__init__( self, iface, viewer_dock, session, hostname, calc_id, output_type, path, mode) # FIXME: add layout only for output types that load from file self.remove_file_hlayout() self.setWindowTitle( 'Load hazard maps as layer') self.create_load_selected_only_ckb() self.create_num_sites_indicator() self.create_rlz_or_stat_selector() self.create_imt_selector() self.create_poe_selector() self.npz_file = extract_npz( session, hostname, calc_id, output_type, message_bar=iface.messageBar(), params=None) 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 populate_rlz_or_stat_cbx(self): # excluding lon, lat and the final vs30 self.rlzs_or_stats = self.npz_file['all'].dtype.names[2:-1] self.rlz_or_stat_cbx.clear() self.rlz_or_stat_cbx.setEnabled(True) self.rlz_or_stat_cbx.addItems(self.rlzs_or_stats)
[docs] def on_rlz_or_stat_changed(self): self.dataset = self.npz_file['all'][self.rlz_or_stat_cbx.currentText()] self.imts = {} imts_poes = self.dataset.dtype.names for imt_poe in imts_poes: imt, poe = imt_poe.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 show_num_sites(self): # NOTE: we are assuming all realizations have the same number of sites, # which currently is always true. # If different realizations have a different number of sites, we # need to move this block of code inside on_rlz_or_stat_changed() rlz_or_stat_data = self.npz_file['all'][ self.rlz_or_stat_cbx.currentText()] self.num_sites_lbl.setText( self.num_sites_msg % rlz_or_stat_data.shape)
[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_or_stat, **kwargs): imt = self.imt_cbx.currentText() poe = self.poe_cbx.currentText() self.default_field_name = '%s-%s' % (imt, poe) investigation_time = self.get_investigation_time() layer_name = "hazard_map_%s_%sy" % (rlz_or_stat, investigation_time) return layer_name
[docs] def get_field_names(self, **kwargs): field_names = [self.default_field_name] return field_names
[docs] def add_field_to_layer(self, field_name): try: # NOTE: add_numeric_attribute uses LayerEditingManager added_field_name = add_numeric_attribute(field_name, self.layer) except TypeError as exc: log_msg(str(exc), level='C', message_bar=self.iface.messageBar()) return 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): # add a feature feat = QgsFeature(self.layer.pendingFields()) for field_name in field_names: # NOTE: without casting to float, it produces a # null because it does not recognize the # numpy type value = float(row[field_name]) feat.setAttribute(field_name, value) 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): for rlz_or_stat in self.rlzs_or_stats: if (self.load_selected_only_ckb.isChecked() and rlz_or_stat != self.rlz_or_stat_cbx.currentText()): continue with WaitCursorManager('Creating layer for "%s"...' % rlz_or_stat, self.iface.messageBar()): self.build_layer(rlz_or_stat) self.style_maps() if self.npz_file is not None: self.npz_file.close()