Source code for svir.dialogs.load_gmf_data_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 LoadGmfDataAsLayerDialog(LoadOutputAsLayerDialog): """ Modal dialog to load gmf_data from an oq-engine output, as layer """ def __init__(self, iface, viewer_dock, output_type='gmf_data', path=None, mode=None): assert output_type == 'gmf_data' LoadOutputAsLayerDialog.__init__( self, iface, viewer_dock, output_type, path, mode) self.setWindowTitle( 'Load ground motion fields from NPZ, 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_eid_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.imt_cbx.currentIndex() != -1)
[docs] def on_rlz_or_stat_changed(self): self.dataset = self.npz_file[self.rlz_or_stat_cbx.currentText()] imts = self.dataset.dtype.names[2:] self.imt_cbx.clear() self.imt_cbx.setEnabled(True) self.imt_cbx.addItems(imts) self.set_ok_button()
[docs] def on_imt_changed(self): imt = self.imt_cbx.currentText() if imt: min_eid = 0 max_eid = (self.dataset[imt].shape[1] - 1) self.eid_sbx.cleanText() self.eid_sbx.setEnabled(True) self.eid_lbl.setText( 'Event ID (used for default styling) (range %d-%d)' % ( min_eid, max_eid)) self.eid_sbx.setRange(min_eid, max_eid) self.set_ok_button()
[docs] def populate_rlz_or_stat_cbx(self): self.rlzs_or_stats = [item[0] for item in self.npz_file.items()] self.rlz_or_stat_cbx.clear() self.rlz_or_stat_cbx.setEnabled(True) # self.rlz_or_stat_cbx.addItem('All') self.rlz_or_stat_cbx.addItems(self.rlzs_or_stats)
[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): self.build_layer(rlz_or_stat) self.style_maps() if self.npz_file is not None: self.npz_file.close()
[docs] def build_layer_name(self, rlz_or_stat, **kwargs): self.imt = self.imt_cbx.currentText() self.eid = self.eid_sbx.value() self.default_field_name = '%s-%s' % (self.imt, self.eid) # layer_name = "gmf_data_%s_eid-%s" % (rlz_or_stat, self.eid) layer_name = "scenario_damage_gmfs_%s_eid-%s" % (rlz_or_stat, self.eid) return layer_name
[docs] def get_field_names(self, **kwargs): # NOTE: we need a list instead of a tuple, because we want to be able # to modify the list afterwards, to keep track of the actual # field names created in the layer, that might be laundered to be # compliant with shapefiles constraints field_names = list(self.dataset.dtype.names) return field_names
[docs] def add_field_to_layer(self, field_name): field_name = "%s-%s" % (field_name, self.eid) 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 = [] fields = self.layer.pendingFields() layer_field_names = [field.name() for field in fields] dataset_field_names = self.get_field_names() d2l_field_names = dict( zip(dataset_field_names[2:], layer_field_names)) for row in self.dataset: # add a feature feat = QgsFeature(fields) for field_name in dataset_field_names: if field_name in ['lon', 'lat']: continue layer_field_name = d2l_field_names[field_name] value = float(row[field_name][self.eid]) feat.setAttribute(layer_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())