# http://pyrocko.org - GPLv3
#
# The Pyrocko Developers, 21st Century
# ---|P------/S----------~Lg----------
from __future__ import absolute_import
import math
import numpy as num
from pyrocko import cake
from pyrocko.util import mpl_show
from . import mpl_labelspace as labelspace, mpl_init,\
mpl_color as str_to_mpl_color, InvalidColorDef
str_to_mpl_color
InvalidColorDef
d2r = cake.d2r
r2d = cake.r2d
def globe_cross_section():
# modified from http://stackoverflow.com/questions/2417794/
# how-to-make-the-angles-in-a-matplotlib-polar-plot-go-clockwise-with-0-at-the-top
from matplotlib.projections import PolarAxes, register_projection
from matplotlib.transforms import Affine2D, Bbox, IdentityTransform
class GlobeCrossSectionAxes(PolarAxes):
'''
A variant of PolarAxes where theta starts pointing north and goes
clockwise and the radial axis is reversed.
'''
name = 'globe_cross_section'
class GlobeCrossSectionTransform(PolarAxes.PolarTransform):
def transform(self, tr):
xy = num.zeros(tr.shape, num.float_)
t = tr[:, 0:1]*d2r
r = cake.earthradius - tr[:, 1:2]
x = xy[:, 0:1]
y = xy[:, 1:2]
x[:] = r * num.sin(t)
y[:] = r * num.cos(t)
return xy
transform_non_affine = transform
def inverted(self):
return GlobeCrossSectionAxes.\
InvertedGlobeCrossSectionTransform()
class InvertedGlobeCrossSectionTransform(
PolarAxes.InvertedPolarTransform):
def transform(self, xy):
x = xy[:, 0:1]
y = xy[:, 1:]
r = num.sqrt(x*x + y*y)
theta = num.arctan2(y, x)*r2d
return num.concatenate((theta, cake.earthradius-r), 1)
def inverted(self):
return GlobeCrossSectionAxes.GlobeCrossSectionTransform()
def _set_lim_and_transforms(self):
PolarAxes._set_lim_and_transforms(self)
try:
theta_position = self._theta_label1_position
except AttributeError:
theta_position = self.get_theta_offset()
self.transProjection = self.GlobeCrossSectionTransform()
self.transData = (
self.transScale +
self.transProjection +
(self.transProjectionAffine + self.transAxes))
self._xaxis_transform = (
self.transProjection +
self.PolarAffine(IdentityTransform(), Bbox.unit()) +
self.transAxes)
self._xaxis_text1_transform = (
theta_position +
self._xaxis_transform)
self._yaxis_transform = (
Affine2D().scale(num.pi * 2.0, 1.0) +
self.transData)
try:
rlp = getattr(self, '_r_label1_position')
except AttributeError:
rlp = getattr(self, '_r_label_position')
self._yaxis_text1_transform = (
rlp +
Affine2D().scale(1.0 / 360.0, 1.0) +
self._yaxis_transform)
register_projection(GlobeCrossSectionAxes)
tango_colors = {
'butter1': (252, 233, 79),
'butter2': (237, 212, 0),
'butter3': (196, 160, 0),
'chameleon1': (138, 226, 52),
'chameleon2': (115, 210, 22),
'chameleon3': (78, 154, 6),
'orange1': (252, 175, 62),
'orange2': (245, 121, 0),
'orange3': (206, 92, 0),
'skyblue1': (114, 159, 207),
'skyblue2': (52, 101, 164),
'skyblue3': (32, 74, 135),
'plum1': (173, 127, 168),
'plum2': (117, 80, 123),
'plum3': (92, 53, 102),
'chocolate1': (233, 185, 110),
'chocolate2': (193, 125, 17),
'chocolate3': (143, 89, 2),
'scarletred1': (239, 41, 41),
'scarletred2': (204, 0, 0),
'scarletred3': (164, 0, 0),
'aluminium1': (238, 238, 236),
'aluminium2': (211, 215, 207),
'aluminium3': (186, 189, 182),
'aluminium4': (136, 138, 133),
'aluminium5': (85, 87, 83),
'aluminium6': (46, 52, 54)
}
[docs]def path2colorint(path):
'''
Calculate an integer representation deduced from path's given name.
'''
s = sum([ord(char) for char in path.phase.given_name()])
return s
def light(color, factor=0.2):
return tuple(1-(1-c)*factor for c in color)
def dark(color, factor=0.5):
return tuple(c*factor for c in color)
def to01(c):
return tuple(x/255. for x in c)
colors = [to01(tango_colors[x+i]) for i in '321' for x in
'scarletred chameleon skyblue chocolate orange plum'.split()]
shades = [light(to01(tango_colors['chocolate1']), i*0.1) for i in range(1, 9)]
shades2 = [light(to01(tango_colors['orange1']), i*0.1) for i in range(1, 9)]
shades_water = [
light(to01(tango_colors['skyblue1']), i*0.1) for i in range(1, 9)]
def plot_xt(
paths, zstart, zstop,
axes=None,
vred=None,
distances=None,
coloring='by_phase_definition',
avoid_same_colors=True,
phase_colors={}):
if distances is not None:
xmin, xmax = distances.min(), distances.max()
axes = getaxes(axes)
all_x = []
all_t = []
path_to_color = make_path_to_color(
paths, coloring, avoid_same_colors, phase_colors=phase_colors)
for ipath, path in enumerate(paths):
if distances is not None:
if path.xmax() < xmin or path.xmin() > xmax:
continue
color = path_to_color[path]
p, x, t = path.draft_pxt(path.endgaps(zstart, zstop))
if p.size == 0:
continue
all_x.append(x)
all_t.append(t)
if vred is not None:
axes.plot(x, t-x/vred, linewidth=2, color=color)
axes.plot([x[0]], [t[0]-x[0]/vred], 'o', color=color)
axes.plot([x[-1]], [t[-1]-x[-1]/vred], 'o', color=color)
axes.text(
x[len(x)//2],
t[len(x)//2]-x[len(x)//2]/vred,
path.used_phase().used_repr(),
color=color,
va='center',
ha='center',
clip_on=True,
bbox=dict(
ec=color,
fc=light(color),
pad=8,
lw=1),
fontsize=10)
else:
axes.plot(x, t, linewidth=2, color=color)
axes.plot([x[0]], [t[0]], 'o', color=color)
axes.plot([x[-1]], [t[-1]], 'o', color=color)
axes.text(
x[len(x)//2],
t[len(x)//2],
path.used_phase().used_repr(),
color=color,
va='center',
ha='center',
clip_on=True,
bbox=dict(
ec=color,
fc=light(color),
pad=8,
lw=1),
fontsize=10)
all_x = num.concatenate(all_x)
all_t = num.concatenate(all_t)
if vred is not None:
all_t -= all_x/vred
xxx = num.sort(all_x)
ttt = num.sort(all_t)
return xxx.min(), xxx[99*len(xxx)//100], ttt.min(), ttt[99*len(ttt)//100]
def labels_xt(axes=None, vred=None, as_degrees=False):
axes = getaxes(axes)
if as_degrees:
axes.set_xlabel('Distance [deg]')
else:
axes.set_xlabel('Distance [km]')
xscaled(d2r*cake.earthradius/cake.km, axes)
if vred is None:
axes.set_ylabel('Time [s]')
else:
if as_degrees:
axes.set_ylabel('Time - Distance / %g deg/s [ s ]' % (
vred))
else:
axes.set_ylabel('Time - Distance / %g km/s [ s ]' % (
d2r*vred*cake.earthradius/cake.km))
def troffset(dx, dy, axes=None):
axes = getaxes(axes)
from matplotlib import transforms
return axes.transData + transforms.ScaledTranslation(
dx/72., dy/72., axes.gcf().dpi_scale_trans)
def plot_xp(
paths,
zstart,
zstop,
axes=None,
coloring='by_phase_definition',
avoid_same_colors=True,
phase_colors={}):
path_to_color = make_path_to_color(
paths, coloring, avoid_same_colors, phase_colors=phase_colors)
axes = getaxes(axes)
all_x = []
for ipath, path in enumerate(paths):
color = path_to_color[path]
p, x, t = path.draft_pxt(path.endgaps(zstart, zstop))
# converting ray parameters from s/rad to s/deg
p /= r2d
axes.plot(x, p, linewidth=2, color=color)
axes.plot(x[:1], p[:1], 'o', color=color)
axes.plot(x[-1:], p[-1:], 'o', color=color)
axes.text(
x[len(x)//2],
p[len(x)//2],
path.used_phase().used_repr(),
color=color,
va='center',
ha='center',
clip_on=True,
bbox=dict(
ec=color,
fc=light(color),
pad=8,
lw=1))
all_x.append(x)
xxx = num.sort(num.concatenate(all_x))
return xxx.min(), xxx[99*len(xxx)//100]
def labels_xp(axes=None, as_degrees=False):
axes = getaxes(axes)
if as_degrees:
axes.set_xlabel('Distance [deg]')
else:
axes.set_xlabel('Distance [km]')
xscaled(d2r*cake.earthradius*0.001, axes)
axes.set_ylabel('Ray Parameter [s/deg]')
def labels_model(axes=None):
axes = getaxes(axes)
axes.set_xlabel('S-wave and P-wave velocity [km/s]')
xscaled(0.001, axes)
axes.set_ylabel('Depth [km]')
yscaled(0.001, axes)
def make_path_to_color(
paths,
coloring='by_phase_definition',
avoid_same_colors=True,
phase_colors={}):
assert coloring in ['by_phase_definition', 'by_path']
path_to_color = {}
definition_to_color = phase_colors.copy()
available_colors = set()
for ipath, path in enumerate(paths):
if coloring == 'by_phase_definition':
given_name = path.phase.given_name()
int_rep = path2colorint(path)
color_id = int_rep % len(colors)
if given_name not in definition_to_color:
if avoid_same_colors:
if len(available_colors) == 0:
available_colors = set(range(0, len(colors)-1))
if color_id in available_colors:
available_colors.remove(color_id)
else:
color_id = available_colors.pop()
assert color_id not in available_colors
definition_to_color[given_name] = colors[color_id]
path_to_color[path] = definition_to_color[given_name]
else:
path_to_color[path] = colors[ipath % len(colors)]
return path_to_color
def plot_rays(paths, rays, zstart, zstop,
axes=None,
coloring='by_phase_definition',
legend=True,
avoid_same_colors=True,
aspect=None,
phase_colors={}):
axes = getaxes(axes)
if aspect is not None:
axes.set_aspect(aspect/(d2r*cake.earthradius))
path_to_color = make_path_to_color(
paths, coloring, avoid_same_colors, phase_colors=phase_colors)
if rays is None:
rays = paths
labels = set()
for iray, ray in enumerate(rays):
if isinstance(ray, cake.RayPath):
path = ray
pmin, pmax, xmin, xmax, tmin, tmax = path.ranges(
path.endgaps(zstart, zstop))
if not path._is_headwave:
p = num.linspace(pmin, pmax, 6)
x = None
else:
x = num.linspace(xmin, xmin*10, 6)
p = num.atleast_1d(pmin)
fanz, fanx, _ = path.zxt_path_subdivided(
p, path.endgaps(zstart, zstop), x_for_headwave=x)
else:
fanz, fanx, _ = ray.zxt_path_subdivided()
path = ray.path
color = path_to_color[path]
if coloring == 'by_phase_definition':
phase_label = path.phase.given_name()
else:
phase_label = path
for zs, xs in zip(fanz, fanx):
if phase_label in labels:
phase_label = ""
axes.plot(xs, zs, color=color, label=phase_label)
if legend:
labels.add(phase_label)
if legend:
axes.legend(loc=4, prop={'size': 11})
def sketch_model(mod, axes=None, shade=True):
from matplotlib import transforms
axes = getaxes(axes)
trans = transforms.BlendedGenericTransform(axes.transAxes, axes.transData)
for dis in mod.discontinuities():
color = shades[-1]
axes.axhline(dis.z, color=dark(color), lw=1.5)
if dis.name is not None:
axes.text(
0.90, dis.z, dis.name,
transform=trans,
va='center',
ha='right',
color=dark(color),
bbox=dict(ec=dark(color), fc=light(color, 0.3), pad=8, lw=1))
for ilay, lay in enumerate(mod.layers()):
if lay.mtop.vs == 0.0 and lay.mbot.vs == 0.0:
tab = shades_water
else:
if isinstance(lay, cake.GradientLayer):
tab = shades
else:
tab = shades2
color = tab[ilay % len(tab)]
if shade:
axes.axhspan(
lay.ztop, lay.zbot, fc=color, ec=dark(color), label='abc')
if lay.name is not None:
axes.text(
0.95, (lay.ztop + lay.zbot)*0.5,
lay.name,
transform=trans,
va='center',
ha='right',
color=dark(color),
bbox=dict(ec=dark(color), fc=light(color, 0.3), pad=8, lw=1))
def plot_source(zstart, axes=None):
axes = getaxes(axes)
axes.plot([0], [zstart], 'o', color='black')
def plot_receivers(zstop, distances, axes=None):
axes = getaxes(axes)
axes.plot(
distances, cake.filled(zstop, len(distances)), '^', color='black')
def getaxes(axes=None):
from matplotlib import pyplot as plt
if axes is None:
return plt.gca()
else:
return axes
def mk_sc_classes():
from matplotlib.ticker import FormatStrFormatter, AutoLocator
class Scaled(FormatStrFormatter):
def __init__(self, factor):
FormatStrFormatter.__init__(self, '%g')
self._factor = factor
def __call__(self, v, i=0):
return FormatStrFormatter.__call__(self, v*self._factor, i)
class ScaledLocator(AutoLocator):
def __init__(self, factor):
AutoLocator.__init__(self)
self._factor = factor
def bin_boundaries(self, vmin, vmax):
return [x/self._factor for x in AutoLocator.bin_boundaries(
self, vmin*self._factor, vmax*self._factor)]
return Scaled, ScaledLocator
def xscaled(factor, axes):
Scaled, ScaledLocator = mk_sc_classes()
xaxis = axes.get_xaxis()
xaxis.set_major_formatter(Scaled(factor))
xaxis.set_major_locator(ScaledLocator(factor))
def yscaled(factor, axes):
Scaled, ScaledLocator = mk_sc_classes()
yaxis = axes.get_yaxis()
yaxis.set_major_formatter(Scaled(factor))
yaxis.set_major_locator(ScaledLocator(factor))
def labels_rays(axes=None, as_degrees=False):
axes = getaxes(axes)
if as_degrees:
axes.set_xlabel('Distance [deg]')
else:
axes.set_xlabel('Distance [km]')
xscaled(d2r*cake.earthradius/cake.km, axes)
axes.set_ylabel('Depth [km]')
yscaled(1./cake.km, axes)
def plot_surface_efficiency(mat):
from matplotlib import pyplot as plt
data = []
for angle in num.linspace(0., 90., 910.):
pp = math.sin(angle*d2r)/mat.vp
ps = math.sin(angle*d2r)/mat.vs
escp = cake.psv_surface(mat, pp, energy=True)
escs = cake.psv_surface(mat, ps, energy=True)
data.append((
angle,
escp[cake.psv_surface_ind(cake.P, cake.P)],
escp[cake.psv_surface_ind(cake.P, cake.S)],
escs[cake.psv_surface_ind(cake.S, cake.S)],
escs[cake.psv_surface_ind(cake.S, cake.P)]))
a, pp, ps, ss, sp = num.array(data).T
plt.plot(a, pp, label='PP')
plt.plot(a, ps, label='PS')
plt.plot(a, ss, label='SS')
plt.plot(a, sp, label='SP')
plt.xlabel('Incident Angle')
plt.ylabel('Energy Normalized Coefficient', position=(-2., 0.5))
plt.legend()
mpl_show(plt)
def my_xp_plot(
paths, zstart, zstop,
distances=None,
as_degrees=False,
axes=None,
show=True,
phase_colors={}):
if axes is None:
from matplotlib import pyplot as plt
mpl_init()
axes = plt.gca()
else:
plt = None
labelspace(axes)
xmin, xmax = plot_xp(
paths, zstart, zstop, axes=axes, phase_colors=phase_colors)
if distances is not None:
xmin, xmax = distances.min(), distances.max()
axes.set_xlim(xmin, xmax)
labels_xp(as_degrees=as_degrees, axes=axes)
if plt:
if show is True:
mpl_show(plt)
def my_xt_plot(
paths, zstart, zstop,
distances=None,
as_degrees=False,
vred=None,
axes=None,
show=True,
phase_colors={}):
if axes is None:
from matplotlib import pyplot as plt
mpl_init()
axes = plt.gca()
else:
plt = None
labelspace(axes)
xmin, xmax, ymin, ymax = plot_xt(
paths,
zstart,
zstop,
vred=vred,
distances=distances,
axes=axes,
phase_colors=phase_colors)
if distances is not None:
xmin, xmax = distances.min(), distances.max()
axes.set_xlim(xmin, xmax)
axes.set_ylim(ymin, ymax)
labels_xt(as_degrees=as_degrees, vred=vred, axes=axes)
if plt:
if show is True:
mpl_show(plt)
def my_rays_plot_gcs(
mod, paths, rays, zstart, zstop,
distances=None,
show=True,
phase_colors={}):
from matplotlib import pyplot as plt
mpl_init()
globe_cross_section()
axes = plt.subplot(1, 1, 1, projection='globe_cross_section')
plot_rays(paths, rays, zstart, zstop, axes=axes, phase_colors=phase_colors)
plot_source(zstart, axes=axes)
if distances is not None:
plot_receivers(zstop, distances, axes=axes)
axes.set_ylim(0., cake.earthradius)
axes.get_yaxis().set_visible(False)
if plt:
if show is True:
mpl_show(plt)
def my_rays_plot(
mod, paths, rays, zstart, zstop,
distances=None,
as_degrees=False,
axes=None,
show=True,
aspect=None,
shade_model=True,
phase_colors={}):
if axes is None:
from matplotlib import pyplot as plt
mpl_init()
axes = plt.gca()
else:
plt = None
if paths is None:
paths = list(set([x.path for x in rays]))
labelspace(axes)
plot_rays(
paths, rays, zstart, zstop,
axes=axes, aspect=aspect, phase_colors=phase_colors)
xmin, xmax = axes.get_xlim()
ymin, ymax = axes.get_ylim()
sketch_model(mod, axes=axes, shade=shade_model)
plot_source(zstart, axes=axes)
if distances is not None:
plot_receivers(zstop, distances, axes=axes)
labels_rays(as_degrees=as_degrees, axes=axes)
mx = (xmax-xmin)*0.05
my = (ymax-ymin)*0.05
axes.set_xlim(xmin-mx, xmax+mx)
axes.set_ylim(ymax+my, ymin-my)
if plt:
if show is True:
mpl_show(plt)
def my_combi_plot(
mod, paths, rays, zstart, zstop,
distances=None,
as_degrees=False,
show=True,
vred=None,
phase_colors={}):
from matplotlib import pyplot as plt
mpl_init()
ax1 = plt.subplot(211)
labelspace(plt.gca())
xmin, xmax, ymin, ymax = plot_xt(
paths, zstart, zstop,
vred=vred,
distances=distances,
phase_colors=phase_colors)
if distances is None:
plt.xlim(xmin, xmax)
labels_xt(vred=vred, as_degrees=as_degrees)
plt.setp(ax1.get_xticklabels(), visible=False)
plt.xlabel('')
ax2 = plt.subplot(212, sharex=ax1)
labelspace(plt.gca())
plot_rays(paths, rays, zstart, zstop, phase_colors=phase_colors)
xmin, xmax = plt.xlim()
ymin, ymax = plt.ylim()
sketch_model(mod)
plot_source(zstart)
if distances is not None:
plot_receivers(zstop, distances)
labels_rays(as_degrees=as_degrees)
mx = (xmax-xmin)*0.05
my = (ymax-ymin)*0.05
ax2.set_xlim(xmin-mx, xmax+mx)
ax2.set_ylim(ymax+my, ymin-my)
if show is True:
mpl_show(plt)
def my_model_plot(mod, axes=None, show=True):
if axes is None:
from matplotlib import pyplot as plt
mpl_init()
axes = plt.gca()
else:
plt = None
labelspace(axes)
labels_model(axes=axes)
sketch_model(mod, axes=axes)
z = mod.profile('z')
vp = mod.profile('vp')
vs = mod.profile('vs')
axes.plot(vp, z, color=colors[0], lw=2.)
axes.plot(vs, z, color=colors[2], lw=2.)
ymin, ymax = axes.get_ylim()
xmin, xmax = axes.get_xlim()
xmin = 0.
my = (ymax-ymin)*0.05
mx = (xmax-xmin)*0.2
axes.set_ylim(ymax+my, ymin-my)
axes.set_xlim(xmin, xmax+mx)
if plt:
if show is True:
mpl_show(plt)
