# -*- coding: utf-8 -*-
# vim: tabstop=4 shiftwidth=4 softtabstop=4
#
# LICENSE
#
# Copyright (C) 2010-2018 GEM Foundation, G. Weatherill, M. Pagani,
# D. Monelli., L. E. Rodriguez-Abreu
#
# The Hazard Modeller's Toolkit 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.
#
# You should have received a copy of the GNU Affero General Public License
# along with OpenQuake. If not, see <http://www.gnu.org/licenses/>
#
# DISCLAIMER
#
# The software Hazard Modeller's Toolkit (openquake.hmtk) provided herein
# is released as a prototype implementation on behalf of
# scientists and engineers working within the GEM Foundation (Global
# Earthquake Model).
#
# It is distributed for the purpose of open collaboration and in the
# hope that it will be useful to the scientific, engineering, disaster
# risk and software design communities.
#
# The software is NOT distributed as part of GEM's OpenQuake suite
# (https://www.globalquakemodel.org/tools-products) and must be considered as a
# separate entity. The software provided herein is designed and implemented
# by scientific staff. It is not developed to the design standards, nor
# subject to same level of critical review by professional software
# developers, as GEM's OpenQuake software suite.
#
# Feedback and contribution to the software is welcome, and can be
# directed to the hazard scientific staff of the GEM Model Facility
# (hazard@globalquakemodel.org).
#
# The Hazard Modeller's Toolkit (openquake.hmtk) is therefore distributed
# 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.
#
# The GEM Foundation, and the authors of the software, assume no
# liability for use of the software.
'''
Module openquake.hmtk.plotting.catalogue.map is a graphical
function for plotting the spatial distribution of events
'''
from builtins import range
import collections
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.colors import Normalize
from openquake.hmtk.sources.area_source import mtkAreaSource
from openquake.hmtk.sources.point_source import mtkPointSource
from openquake.hmtk.plotting.beachball import Beach
from openquake.hmtk.plotting.plotting_utils import DISSIMILAR_COLOURLIST
from openquake.hmtk.sources.simple_fault_source import mtkSimpleFaultSource
from openquake.hmtk.sources.complex_fault_source import mtkComplexFaultSource
DEFAULT_SYMBOLOGY = [(-np.inf, 1., 'k.'), # M < 1
(1., 2., 'g*'), # 1 < M < 2
(2., 3., 'cx'), # 2 < M < 3
(3., 4., 'yd'), # 3 < M < 4
(4., 5., 'm^'), # 4 < M < 5
(5., 6., 'go'), # 5 < M < 6
(6., 7., 'yh'), # 6 < M < 7
(7., 8., 'bs'), # 7 < M < 8
(8., 9., 'k^'), # 8 < M < 9
(9., np.inf, 'ro')] # 9 < M < 10
LEGEND_OFFSET = (1.3, 1.0)
PORTRAIT_ASPECT = (6, 8)
LANDSCAPE_ASPECT = (8, 6)
NCOLS = len(DISSIMILAR_COLOURLIST)
def _fault_polygon_from_mesh(source):
# Mesh
upper_edge = np.column_stack([source.geometry.mesh.lons[1],
source.geometry.mesh.lats[1],
source.geometry.mesh.depths[1]])
lower_edge = np.column_stack([source.geometry.mesh.lons[-1],
source.geometry.mesh.lats[-1],
source.geometry.mesh.depths[-1]])
return np.vstack([upper_edge, np.flipud(lower_edge), upper_edge[0, :]])
[docs]class HMTKBaseMap(object):
'''
Class to plot the spatial distribution of events based in the Catalogue
imported from openquake.hmtk.
'''
def __init__(self, config,
title=None, dpi=300, ax=None, lat_lon_spacing=2.):
"""
:param dict config:
Configuration parameters of the algorithm, containing the
following information -
'min_lat' Minimum value of latitude (in degrees, float)
'max_lat' Minimum value of longitude (in degrees, float)
(min_lat, min_lon) Defines the inferior corner of the map
'min_lon' Maximum value of latitude (in degrees, float)
'max_lon' Maximum value of longitude (in degrees, float)
(min_lon, max_lon) Defines the upper corner of the map
:param str title:
Title string
"""
self.config = config
self.title = title
self.dpi = dpi
self.lat_lon_spacing = lat_lon_spacing
self.fig = None
self.ax = ax
self.m = None
self._build_basemap()
def _build_basemap(self):
'''
Creates the map according to the input configuration
'''
if self.config['min_lon'] >= self.config['max_lon']:
raise ValueError('Upper limit of long is smaller than lower limit')
if self.config['min_lon'] >= self.config['max_lon']:
raise ValueError('Upper limit of long is smaller than lower limit')
# Corners of the map
lowcrnrlat = self.config['min_lat']
lowcrnrlon = self.config['min_lon']
uppcrnrlat = self.config['max_lat']
uppcrnrlon = self.config['max_lon']
if 'resolution' not in self.config.keys():
self.config['resolution'] = 'l'
lat0 = lowcrnrlat + ((uppcrnrlat - lowcrnrlat) / 2)
lon0 = lowcrnrlon + ((uppcrnrlon - lowcrnrlon) / 2)
if (uppcrnrlat - lowcrnrlat) >= (uppcrnrlon - lowcrnrlon):
fig_aspect = PORTRAIT_ASPECT
else:
fig_aspect = LANDSCAPE_ASPECT
if self.ax is None:
self.fig, self.ax = plt.subplots(figsize=fig_aspect,
facecolor='w',
edgecolor='k')
else:
self.fig = self.ax.get_figure()
if self.title:
self.ax.set_title(self.title, fontsize=16)
parallels = np.arange(-90., 90., self.lat_lon_spacing)
meridians = np.arange(0., 360., self.lat_lon_spacing)
# Build Map
# Do not import Basemap at top level since it's an optional feature
# and it would break doctests
from mpl_toolkits.basemap import Basemap
self.m = Basemap(
llcrnrlon=lowcrnrlon, llcrnrlat=lowcrnrlat,
urcrnrlon=uppcrnrlon, urcrnrlat=uppcrnrlat,
projection='stere', resolution=self.config['resolution'],
area_thresh=1000.0, lat_0=lat0, lon_0=lon0, ax=self.ax)
self.m.drawcountries()
self.m.drawmapboundary()
self.m.drawcoastlines()
self.m.drawstates()
self.m.drawparallels(parallels, labels=[1, 0, 0, 0], fontsize=12)
self.m.drawmeridians(meridians, labels=[0, 0, 0, 1], fontsize=12)
self.m.fillcontinents(color='wheat')
[docs] def savemap(self, filename, filetype='png', papertype="a4"):
"""
Save the figure
"""
self.fig.savefig(filename,
dpi=self.dpi,
format=filetype,
papertype=papertype)
[docs] def add_catalogue(self, catalogue, overlay=False):
'''
:param catalogue:
Earthquake catalogue as instance of
:class:`openquake.hmtk.seismicity.catalogue.Catalogue`
:param dict config:
Configuration parameters of the algorithm, containing the
following information:
'min_lat' Minimum value of latitude (in degrees, float)
'max_lat' Minimum value of longitude (in degrees, float)
(min_lat, min_lon) Defines the inferior corner of the map
'min_lon' Maximum value of latitude (in degrees, float)
'max_lon' Maximum value of longitude (in degrees, float)
(min_lon, max_lon) Defines the upper corner of the map
:returns:
Figure with the spatial distribution of the events.
'''
# Magnitudes bins and minimum marrker size
# min_mag = np.min(catalogue.data['magnitude'])
# max_mag = np.max(catalogue.data['magnitude'])
con_min = np.where(np.array([symb[0] for symb in DEFAULT_SYMBOLOGY]) <
np.min(catalogue.data['magnitude']))[0]
con_max = np.where(np.array([symb[1] for symb in DEFAULT_SYMBOLOGY]) >
np.max(catalogue.data['magnitude']))[0]
if len(con_min) == 1:
min_loc = con_min[0]
else:
min_loc = con_min[-1]
if len(con_max) == 1:
max_loc = con_max[0]
else:
max_loc = con_max[1]
# min_loc = np.where(np.array([symb[0] for symb in DEFAULT_SYMBOLOGY])
# < np.min(catalogue.data['magnitude']))[0][-1]
# max_loc = np.where(np.array([symb[1] for symb in DEFAULT_SYMBOLOGY])
# > np.max(catalogue.data['magnitude']))[0][1]
symbology = DEFAULT_SYMBOLOGY[min_loc:max_loc]
for sym in symbology:
# Create legend string
if np.isinf(sym[0]):
leg_str = 'M < %5.2f' % sym[1]
elif np.isinf(sym[1]):
leg_str = 'M >= %5.2f' % sym[0]
else:
leg_str = '%5.2f <= M < %5.2f' % (sym[0], sym[1])
idx = np.logical_and(catalogue.data['magnitude'] >= sym[0],
catalogue.data['magnitude'] < sym[1])
mag_size = 1.2 * np.min([sym[0] + 0.5, sym[1] - 0.5])
x, y = self.m(catalogue.data['longitude'][idx],
catalogue.data['latitude'][idx])
self.m.plot(x, y, sym[2], markersize=mag_size, label=leg_str)
self.ax.legend(bbox_to_anchor=LEGEND_OFFSET)
if self.title:
self.ax.set_title(self.title, fontsize=16)
if not overlay:
plt.show()
def _plot_area_source(self, source, border='k-', border_width=1.0):
"""
Plots the area source
:param source:
Area source as instance of :class: mtkAreaSource
:param str border:
Line properties of border (see matplotlib documentation for detail)
:param float border_width:
Line width of border (see matplotlib documentation for detail)
"""
lons = np.hstack([source.geometry.lons, source.geometry.lons[0]])
lats = np.hstack([source.geometry.lats, source.geometry.lats[0]])
x, y = self.m(lons, lats)
self.m.plot(x, y, border, linewidth=border_width)
def _plot_point_source(self, source, point_marker='ks', point_size=2.0):
"""
Plots the area source
:param source:
Area source as instance of :class: mtkPointSource
:param str point_marker:
Marker style for point (see matplotlib documentation for detail)
:param float marker size for point:
Line width of border (see matplotlib documentation for detail)
"""
x, y = self.m(source.geometry.longitude, source.geometry.latitude)
self.m.plot(x, y, point_marker, markersize=point_size)
def _plot_simple_fault(self, source, border='k-', border_width=1.0):
"""
Plots the simple fault source as a composite of the fault trace
and the surface projection of the fault.
:param source:
Fault source as instance of :class: mtkSimpleFaultSource
:param str border:
Line properties of border (see matplotlib documentation for detail)
:param float border_width:
Line width of border (see matplotlib documentation for detail)
"""
# Get the trace
trace_lons = np.array([pnt.longitude
for pnt in source.fault_trace.points])
trace_lats = np.array([pnt.latitude
for pnt in source.fault_trace.points])
surface_projection = _fault_polygon_from_mesh(source)
# Plot surface projection first
x, y = self.m(surface_projection[:, 0], surface_projection[:, 1])
self.m.plot(x, y, border, linewidth=border_width)
# Plot fault trace
x, y = self.m(trace_lons, trace_lats)
self.m.plot(x, y, border, linewidth=1.3 * border_width)
def _plot_complex_fault(self, source, border='k-', border_width=1.0,
min_depth=0., max_depth=None, alpha=1.0):
"""
Plots the simple fault source as a composite of the fault trace
and the surface projection of the fault.
:param source:
Fault source as instance of :class: mtkSimpleFaultSource
:param str border:
Line properties of border (see matplotlib documentation for detail)
:param float border_width:
Line width of border (see matplotlib documentation for detail)
"""
if not max_depth:
max_depth = 70.
# Get outline
top_edge = np.column_stack([source.geometry.mesh.lons[0],
source.geometry.mesh.lats[0]])
bottom_edge = np.column_stack([source.geometry.mesh.lons[-1][::-1],
source.geometry.mesh.lats[-1][::-1]])
outline = np.vstack([top_edge, bottom_edge, top_edge[0, :]])
lons = source.geometry.mesh.lons.flatten()
lats = source.geometry.mesh.lats.flatten()
depths = source.geometry.mesh.depths.flatten()
norm = Normalize(vmin=min_depth, vmax=max_depth)
x1, y1 = self.m(lons, lats)
self.m.scatter(x1, y1,
marker=".",
s=20,
c=depths,
norm=norm,
cmap="jet_r",
alpha=alpha,
linewidths=0.0,
zorder=4)
# Plot border
x2, y2 = self.m(outline[:, 0], outline[:, 1])
self.m.plot(x2, y2, border, linewidth=border_width)
[docs] def add_source_model(
self, model, area_border='k-', border_width=1.0,
point_marker='ks', point_size=2.0, overlay=False, min_depth=0.,
max_depth=None, alpha=1.0):
"""
Adds a source model to the map
:param model:
Source model of mixed typologies as instance of :class:
openquake.hmtk.sources.source_model.mtkSourceModel
"""
for source in model.sources:
if isinstance(source, mtkAreaSource):
self._plot_area_source(source, area_border, border_width)
elif isinstance(source, mtkPointSource):
self._plot_point_source(source, point_marker, point_size)
elif isinstance(source, mtkComplexFaultSource):
self._plot_complex_fault(source, area_border, border_width,
min_depth, max_depth, alpha)
elif isinstance(source, mtkSimpleFaultSource):
self._plot_simple_fault(source, area_border, border_width)
else:
pass
if not overlay:
plt.show()
[docs] def add_colour_scaled_points(self, longitude, latitude, data, shape='s',
alpha=1.0, size=20, norm=None, overlay=False):
"""
Overlays a set of points on a map with a fixed size but colour scaled
according to the data
:param np.ndarray longitude:
Longitude
:param np.ndarray latitude:
Latitude
:param np.ndarray data:
Data for plotting
:param str shape:
Marker style
:param float alpha:
Sets the transparency of the marker (0 for transparent, 1 opaque)
:param int size:
Marker size
:param norm:
Normalisation as instance of :class: matplotlib.colors.Normalize
"""
if not norm:
norm = Normalize(vmin=np.min(data), vmax=np.max(data))
x, y, = self.m(longitude, latitude)
mappable = self.m.scatter(x, y,
marker=shape,
s=size,
c=data,
norm=norm,
alpha=alpha,
linewidths=0.0,
zorder=4)
self.m.colorbar(mappable=mappable, fig=self.fig, ax=self.ax)
if not overlay:
plt.show()
[docs] def add_size_scaled_points(
self, longitude, latitude, data, shape='o',
logplot=False, alpha=1.0, colour='b', smin=2.0, sscale=2.0,
overlay=False):
"""
Plots a set of points with size scaled according to the data
:param bool logplot:
Choose to scale according to the logarithm (base 10) of the data
:param float smin:
Minimum scale size
:param float sscale:
Scaling factor
"""
if logplot:
data = np.log10(data.copy())
x, y, = self.m(longitude, latitude)
self.m.scatter(x, y,
marker=shape,
s=(smin + data ** sscale),
c=colour,
alpha=alpha,
zorder=2)
if not overlay:
plt.show()
def _select_color_mag(self, mag):
if (mag > 8.0):
color = 'k'
# color.append('k')
elif (mag < 8.0) and (mag >= 7.0):
color = 'b'
# color.append('b')
elif (mag < 7.0) and (mag >= 6.0):
color = 'y'
# color.append('y')
elif (mag < 6.0) and (mag >= 5.0):
color = 'g'
# color.append('g')
elif (mag < 5.0):
color = 'm'
# color.append('m')
return color
[docs] def add_focal_mechanism(self, catalogue, magnitude=None, overlay=True):
"""
Plots a the the focal mechanism based on the beachball representation.
The focal_menchanism flag must contain: strike, dip, rake.
"""
longitude = catalogue.data['longitude']
latitude = catalogue.data['latitude']
strike = catalogue.data['strike1']
dip = catalogue.data['dip1']
rake = catalogue.data['rake1']
if not magnitude or (magnitude < 0):
magnitude = catalogue.data['magnitude']
for i, mag in enumerate(magnitude):
color = self._select_color_mag(mag)
focal_mechanism = [strike[i], dip[i], rake[i]]
x, y = self.m(longitude[i], latitude[i])
self.m.plot(x, y)
size = mag * 10000
beach = Beach(focal_mechanism, linewidth=1, xy=(x, y),
width=size, zorder=size, facecolor=color)
self.ax.add_collection(beach)
if not overlay:
plt.show()
else:
for i in range(0, catalogue.get_number_tensors()):
x, y = self.m(longitude[i], latitude[i])
self.m.plot(x, y)
focal_mechanism = [strike[i], dip[i], rake[i]]
size = magnitude * 10000.
beach = Beach(focal_mechanism, linewidth=1, xy=(x, y),
width=size, zorder=size, facecolor='r')
self.ax.add_collection(beach)
if not overlay:
plt.show()
[docs] def add_catalogue_cluster(self, catalogue, vcl, flagvector,
cluster_id=None, overlay=True):
"""
Creates a plot of a catalogue showing where particular clusters exist
"""
# Create simple magnitude scaled point basemap
self.add_size_scaled_points(catalogue.data['longitude'],
catalogue.data['latitude'],
catalogue.data['magnitude'],
shape="o",
alpha=0.8,
colour=(0.5, 0.5, 0.5),
smin=1.0,
sscale=1.5,
overlay=True)
# If cluster ID is not specified just show mainshocks
if cluster_id is None:
idx = flagvector == 0
self.add_size_scaled_points(catalogue.data['longitude'][idx],
catalogue.data['latitude'][idx],
catalogue.data['magnitude'][idx],
shape="o",
colour="r",
smin=1.0,
sscale=1.5,
overlay=overlay)
return
if not isinstance(cluster_id, collections.Iterable):
cluster_id = [cluster_id]
for iloc, clid in enumerate(cluster_id):
if iloc == (len(cluster_id) - 1):
# On last iteration set overlay to function overlay
temp_overlay = overlay
else:
temp_overlay = True
idx = vcl == clid
self.add_size_scaled_points(
catalogue.data["longitude"][idx],
catalogue.data["latitude"][idx],
catalogue.data["magnitude"][idx],
shape="o",
colour=DISSIMILAR_COLOURLIST[(iloc + 1) % NCOLS],
smin=1.0,
sscale=1.5,
overlay=temp_overlay)