def single_rayleigh_scattering_spd_plot(
CO2_concentration=STANDARD_CO2_CONCENTRATION,
temperature=STANDARD_AIR_TEMPERATURE,
pressure=AVERAGE_PRESSURE_MEAN_SEA_LEVEL,
latitude=DEFAULT_LATITUDE,
altitude=DEFAULT_ALTITUDE,
cmfs='CIE 1931 2 Degree Standard Observer',
**kwargs):
"""
Plots a single *Rayleigh* scattering spectral power distribution.
Parameters
----------
CO2_concentration : numeric, optional
:math:`CO_2` concentration in parts per million (ppm).
temperature : numeric, optional
Air temperature :math:`T[K]` in kelvin degrees.
pressure : numeric
Surface pressure :math:`P` of the measurement site.
latitude : numeric, optional
Latitude of the site in degrees.
altitude : numeric, optional
Altitude of the site in meters.
cmfs : unicode, optional
Standard observer colour matching functions.
Other Parameters
----------------
\**kwargs : dict, optional
{:func:`boundaries`, :func:`canvas`, :func:`decorate`,
:func:`display`},
Please refer to the documentation of the previously listed definitions.
out_of_gamut_clipping : bool, optional
{:func:`single_spd_plot`},
Whether to clip out of gamut colours otherwise, the colours will be
offset by the absolute minimal colour leading to a rendering on
gray background, less saturated and smoother. [1]_
Returns
-------
Figure
Current figure or None.
Examples
--------
>>> single_rayleigh_scattering_spd_plot() # doctest: +SKIP
"""
title = 'Rayleigh Scattering'
cmfs = get_cmfs(cmfs)
settings = {'title': title, 'y_label': 'Optical Depth'}
settings.update(kwargs)
spd = rayleigh_scattering_spd(cmfs.shape, CO2_concentration, temperature,
pressure, latitude, altitude)
return single_spd_plot(spd, **settings)
def test_rayleigh_scattering_spd(self):
"""
Tests :func:`colour.phenomenons.rayleigh.rayleigh_scattering_spd`
definition.
"""
np.testing.assert_almost_equal(rayleigh_scattering_spd().values,
RAYLEIGH_SCATTERING_SPD_DATA,
decimal=7)
def single_rayleigh_scattering_spd_plot(
CO2_concentration=STANDARD_CO2_CONCENTRATION,
temperature=STANDARD_AIR_TEMPERATURE,
pressure=AVERAGE_PRESSURE_MEAN_SEA_LEVEL,
latitude=DEFAULT_LATITUDE,
altitude=DEFAULT_ALTITUDE,
cmfs='CIE 1931 2 Degree Standard Observer',
**kwargs):
"""
Plots a single rayleigh scattering spectral power distribution.
Parameters
----------
CO2_concentration : numeric, optional
:math:`CO_2` concentration in parts per million (ppm).
temperature : numeric, optional
Air temperature :math:`T[K]` in kelvin degrees.
pressure : numeric
Surface pressure :math:`P` of the measurement site.
latitude : numeric, optional
Latitude of the site in degrees.
altitude : numeric, optional
Altitude of the site in meters.
cmfs : unicode, optional
Standard observer colour matching functions.
\**kwargs : dict, optional
Keywords arguments.
Returns
-------
bool
Definition success.
Examples
--------
>>> single_rayleigh_scattering_spd_plot() # doctest: +SKIP
True
"""
title = 'Rayleigh Scattering'
cmfs = get_cmfs(cmfs)
settings = {
'title': title,
'y_label': 'Optical Depth'}
settings.update(kwargs)
spd = rayleigh_scattering_spd(cmfs.shape,
CO2_concentration,
temperature,
pressure,
latitude,
altitude)
return single_spd_plot(spd, **settings)
def test_rayleigh_scattering_spd(self):
"""
Tests :func:`colour.phenomenons.rayleigh.rayleigh_scattering_spd`
definition.
"""
np.testing.assert_almost_equal(
rayleigh_scattering_spd().values,
RAYLEIGH_SCATTERING_SPD_DATA,
decimal=7)
def single_rayleigh_scattering_spd_plot(
CO2_concentration=STANDARD_CO2_CONCENTRATION,
temperature=STANDARD_AIR_TEMPERATURE,
pressure=AVERAGE_PRESSURE_MEAN_SEA_LEVEL,
latitude=DEFAULT_LATITUDE,
altitude=DEFAULT_ALTITUDE,
cmfs='CIE 1931 2 Degree Standard Observer',
**kwargs):
"""
Plots a single rayleigh scattering spectral power distribution.
Parameters
----------
CO2_concentration : numeric, optional
:math:`CO_2` concentration in parts per million (ppm).
temperature : numeric, optional
Air temperature :math:`T[K]` in kelvin degrees.
pressure : numeric
Surface pressure :math:`P` of the measurement site.
latitude : numeric, optional
Latitude of the site in degrees.
altitude : numeric, optional
Altitude of the site in meters.
cmfs : unicode, optional
Standard observer colour matching functions.
\**kwargs : dict, optional
Keywords arguments.
Returns
-------
Figure
Current figure or None.
Examples
--------
>>> single_rayleigh_scattering_spd_plot() # doctest: +SKIP
"""
title = 'Rayleigh Scattering'
cmfs = get_cmfs(cmfs)
settings = {
'title': title,
'y_label': 'Optical Depth'}
settings.update(kwargs)
spd = rayleigh_scattering_spd(cmfs.shape,
CO2_concentration,
temperature,
pressure,
latitude,
altitude)
return single_spd_plot(spd, **settings)
def the_blue_sky_plot(cmfs='CIE 1931 2 Degree Standard Observer', **kwargs):
"""
Plots the blue sky.
Parameters
----------
cmfs : unicode, optional
Standard observer colour matching functions.
\**kwargs : dict, optional
Keywords arguments.
Returns
-------
bool
Definition success.
Examples
--------
>>> the_blue_sky_plot() # doctest: +SKIP
True
"""
canvas(**kwargs)
cmfs, name = get_cmfs(cmfs), cmfs
ASTM_G_173_spd = ASTM_G_173_ETR.clone()
rayleigh_spd = rayleigh_scattering_spd()
ASTM_G_173_spd.align(rayleigh_spd.shape)
spd = rayleigh_spd * ASTM_G_173_spd
matplotlib.pyplot.subplots_adjust(hspace=0.4)
matplotlib.pyplot.figure(1)
matplotlib.pyplot.subplot(211)
settings = {
'title': 'The Blue Sky - Synthetic Spectral Power Distribution',
'y_label': u'W / m-2 / nm-1',
'standalone': False
}
settings.update(kwargs)
single_spd_plot(spd, name, **settings)
matplotlib.pyplot.subplot(212)
settings = {
'title':
'The Blue Sky - Colour',
'x_label': ('The sky is blue because molecules in the atmosphere '
'scatter shorter wavelengths more than longer ones.\n'
'The synthetic spectral power distribution is computed as '
'follows: '
'(ASTM G-173 ETR * Standard Air Rayleigh Scattering).'),
'y_label':
'',
'aspect':
None,
'standalone':
False
}
blue_sky_color = XYZ_to_sRGB(spectral_to_XYZ(spd))
single_colour_plot(ColourParameter('', normalise(blue_sky_color)),
**settings)
settings = {'standalone': True}
settings.update(kwargs)
boundaries(**settings)
decorate(**settings)
return display(**settings)
def the_blue_sky_plot(
cmfs='CIE 1931 2 Degree Standard Observer',
**kwargs):
"""
Plots the blue sky.
Parameters
----------
cmfs : unicode, optional
Standard observer colour matching functions.
\*\*kwargs : \*\*
Keywords arguments.
Returns
-------
bool
Definition success.
Examples
--------
>>> the_blue_sky_plot() # doctest: +SKIP
True
"""
canvas(**kwargs)
cmfs, name = get_cmfs(cmfs), cmfs
ASTM_G_173_spd = ASTM_G_173_ETR.clone()
rayleigh_spd = rayleigh_scattering_spd()
ASTM_G_173_spd.align(rayleigh_spd.shape)
spd = rayleigh_spd * ASTM_G_173_spd
matplotlib.pyplot.subplots_adjust(hspace=0.4)
matplotlib.pyplot.figure(1)
matplotlib.pyplot.subplot(211)
settings = {
'title': 'The Blue Sky - Synthetic Spectral Power Distribution',
'y_label': u'W / m-2 / nm-1',
'standalone': False}
settings.update(kwargs)
single_spd_plot(spd, name, **settings)
matplotlib.pyplot.subplot(212)
settings = {
'title': 'The Blue Sky - Colour',
'x_label': ('The sky is blue because molecules in the atmosphere '
'scatter shorter wavelengths more than longer ones.\n'
'The synthetic spectral power distribution is computed as '
'follows: '
'(ASTM G-173 ETR * Standard Air Rayleigh Scattering).'),
'y_label': '',
'aspect': None,
'standalone': False}
blue_sky_color = XYZ_to_sRGB(spectral_to_XYZ(spd))
single_colour_plot(colour_parameter('', normalise(blue_sky_color)),
**settings)
settings = {'standalone': True}
settings.update(kwargs)
boundaries(**settings)
decorate(**settings)
return display(**settings)
from colour.phenomenons import rayleigh_scattering_spd
from colour.plotting import * # noqa
from colour.utilities.verbose import message_box
message_box('Optical Phenomenons Plots')
message_box(('Plotting a single "Rayleigh Scattering" spectral power '
'distribution.'))
single_rayleigh_scattering_spd_plot()
print('\n')
message_box(('Comparing multiple "Rayleigh Scattering" spectral power '
'distributions with different CO_2 concentrations.'))
name_template = 'Rayleigh Scattering - CO2: {0} ppm'
rayleigh_spds = []
for ppm in (0, 50, 300):
rayleigh_spd = rayleigh_scattering_spd(CO2_concentration=ppm)
rayleigh_spd.name = name_template.format(ppm)
rayleigh_spds.append(rayleigh_spd)
multi_spd_plot(rayleigh_spds,
title=('Rayleigh Optical Depth - '
'Comparing "C02" Concentration Influence'),
y_label='Optical Depth',
legend_location='upper right')
print('\n')
message_box('Plotting "The blue Sky".')
the_blue_sky_plot()
"""
import colour
from colour.phenomenons import (rayleigh_optical_depth,
rayleigh_scattering_spd,
scattering_cross_section)
from colour.utilities.verbose import message_box
message_box('Rayleigh Optical Depth Computations')
wavelength = 555 * 10e-8
message_box(('Computing the scattering cross section per molecule at given '
'wavelength in cm:\n'
'\n\tWavelength: {0} cm'.format(wavelength)))
print(scattering_cross_section(wavelength))
print('\n')
message_box(('Computing the "Rayleigh Optical depth" as function of '
'wavelength in cm:\n'
'\n\tWavelength: {0} cm'.format(wavelength)))
print(rayleigh_optical_depth(wavelength))
print('\n')
message_box(('Creating a "Rayleigh" spectral power distribution with default '
'spectral shape:\n'
'\n\t{0}'.format(colour.DEFAULT_SPECTRAL_SHAPE)))
spd = rayleigh_scattering_spd()
print(spd[555])
from colour.utilities.verbose import message_box
message_box('Optical Phenomenons Plots')
colour_plotting_defaults()
message_box(('Plotting a single "Rayleigh" scattering spectral power '
'distribution.'))
single_rayleigh_scattering_spd_plot()
print('\n')
message_box(('Comparing multiple "Rayleigh" scattering spectral power '
'distributions with different CO_2 concentrations.'))
name_template = 'Rayleigh Scattering - CO2: {0} ppm'
rayleigh_spds = []
for ppm in (0, 50, 300):
rayleigh_spd = rayleigh_scattering_spd(CO2_concentration=ppm)
rayleigh_spd.name = name_template.format(ppm)
rayleigh_spds.append(rayleigh_spd)
multi_spd_plot(rayleigh_spds,
title=('Rayleigh Optical Depth - '
'Comparing "C02" Concentration Influence'),
y_label='Optical Depth',
legend_location='upper right')
print('\n')
message_box('Plotting "The Blue Sky".')
the_blue_sky_plot()
import colour
from colour.phenomenons import (
rayleigh_optical_depth,
rayleigh_scattering_spd,
scattering_cross_section)
from colour.utilities.verbose import message_box
message_box('Rayleigh Optical Depth Computations')
wavelength = 555 * 10e-8
message_box(('Computing the scattering cross section per molecule at given '
'wavelength in cm:\n'
'\n\tWavelength: {0} cm'.format(wavelength)))
print(scattering_cross_section(wavelength))
print('\n')
message_box(('Computing the "Rayleigh Optical depth" as function of '
'wavelength in cm:\n'
'\n\tWavelength: {0} cm'.format(wavelength)))
print(rayleigh_optical_depth(wavelength))
print('\n')
message_box(('Creating a "Rayleigh" spectral power distribution with default '
'spectral shape:\n'
'\n\t{0}'.format(colour.DEFAULT_SPECTRAL_SHAPE)))
spd = rayleigh_scattering_spd()
print(spd[555])