# -*- 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 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()