Generate and return the natural logarithm of the EggBox density function at the specified input point X
.
More...
Generate and return the natural logarithm of the EggBox density function at the specified input point X
.
See the documentation of pm_distEggBox for details of the EggBox density function.
- Parameters
-
[in] | X | : The input contiguous vector of size (1:ndim) of,
-
type
real of kind any supported by the processor (e.g., RK, RK32, RK64, or RK128),
containing the ndim -dimensional point at which the function must be evaluated. |
[in] | mu | : The input contiguous vector of the same type, kind, rank, and size as the input X , representing the location parameter ( \(\mu\)) of the density function.
(optional, default = 0. . It must be present if and only if the input argument sigma is also present.) |
[in] | sigma | : The input contiguous vector of the same type, kind, rank, and size as the input X , representing the scale parameter ( \(\sigma\)) of the density function.
(optional, default = 1. It must be present if and only if the input argument mu is also present.) |
[in] | alpha | : The input scalar of the same type and kind as the input X , representing the shape parameter ( \(\alpha\)) of the density function.
(optional, default = 5. ) |
[in] | zeta | : The input scalar of the same type and kind as the input X , representing the intercept parameter ( \(\zeta\)) of the density function.
(optional, default = 2. ) |
- Returns
logUDF
: The output scalar of the same type and kind as the output argument x
representing the value of the density function at the specified location.
Possible calling interfaces ⛓
logUDF
= getEggBoxLogUDF(X(
1:ndim), mu(
1:ndim), sigma(
1:ndim), alpha
= alpha, zeta
= zeta)
Generate and return the natural logarithm of the EggBox density function at the specified input point...
This module contains classes and procedures for computing various statistical quantities related to t...
- Warning
- The condition
size(X) == size(mu)
must hold for the corresponding input arguments.
The condition size(X) == size(sigma)
must hold for the corresponding input arguments.
These conditions are verified only if the library is built with the preprocessor macro CHECK_ENABLED=1
.
Example usage ⛓
13 integer(IK),
parameter :: NP
= 5_IK
15 type(display_type) :: disp
19 call disp%show(
"getEggBoxLogUDF([0._RKG]) ! 1D eggbox")
24 call disp%show(
"getEggBoxLogUDF([0._RKG], [0._RKG], [1._RKG], 5._RKG, 2._RKG) ! 1D eggbox")
29 call disp%show(
"getEggBoxLogUDF([real(RKG) :: 0, 1], mu = [-1._RKG, 1._RKG], sigma = [2._RKG, .5_RKG]) ! 2D EggBox")
40 integer(IK) :: fileUnit, i, j
41 real(RKG) ,
parameter :: signif
= 2
42 real(RKG) :: point(
1000), density(
4), mu(
4), sigma(
4)
43 mu
= [
+0._RKG,
+0._RKG,
+0._RKG,
-2._RKG]
44 sigma
= [
+3._RKG,
+1._RKG,
+.
3_RKG,
1._RKG]
46 , x1
= minval(mu)
- signif
* sigma(
minloc(mu,
1))
&
47 , x2
= maxval(mu)
+ signif
* sigma(
maxloc(mu,
1))
&
49 open(newunit
= fileUnit, file
= "getEggBoxLogUDF.D1.RK.txt")
51 do j
= 1,
size(density)
54 write(fileUnit,
"(5(g0,:,','))") point(i), density
62 integer(IK) :: fileUnit, i, j
63 real(RKG) ,
parameter :: signif
= 2
64 integer(IK) ,
parameter :: ndim
= 2, npnt
= 500
65 real(RKG) :: grid(ndim, npnt, npnt), mu(ndim), sigma(ndim)
66 mu
= [
+0._RKG,
-2._RKG]
67 sigma
= [
+3._RKG,
+1._RKG]
69 grid(i, :, :)
= spread (
getLinSpace( x1
= mu(i)
- signif
* sigma(i)
&
70 , x2
= mu(i)
+ signif
* sigma(i)
&
74 open(newunit
= fileUnit, file
= "getEggBoxLogUDF.D2.RK.txt")
75 do i
= 1,
size(grid,
2)
76 do j
= 1,
size(grid,
3)
77 write(fileUnit,
"(5(g0,:,','))") grid(:, i, j),
getEggBoxLogUDF(grid(:, i, j), mu, sigma)
Generate count evenly spaced points over the interval [x1, x2] if x1 < x2, or [x2,...
Return the linSpace output argument with size(linSpace) elements of evenly-spaced values over the int...
Return the logSpace output argument with size(logSpace) elements of logarithmically-evenly-spaced val...
This is a generic method of the derived type display_type with pass attribute.
This is a generic method of the derived type display_type with pass attribute.
This module contains procedures and generic interfaces for assessing whether particular value(s) or a...
This module contains procedures and generic interfaces for generating arrays with linear or logarithm...
This module contains classes and procedures for input/output (IO) or generic display operations on st...
type(display_type) disp
This is a scalar module variable an object of type display_type for general display.
This module defines the relevant Fortran kind type-parameters frequently used in the ParaMonte librar...
integer, parameter RK
The default real kind in the ParaMonte library: real64 in Fortran, c_double in C-Fortran Interoperati...
integer, parameter IK
The default integer kind in the ParaMonte library: int32 in Fortran, c_int32_t in C-Fortran Interoper...
integer, parameter SK
The default character kind in the ParaMonte library: kind("a") in Fortran, c_char in C-Fortran Intero...
This module contains procedures and generic interfaces for evaluating the mathematical operator acti...
Generate and return an object of type display_type.
Example Unix compile command via Intel ifort
compiler ⛓
3ifort -fpp -standard-semantics -O3 -Wl,-rpath,../../../lib -I../../../inc main.F90 ../../../lib/libparamonte* -o main.exe
Example Windows Batch compile command via Intel ifort
compiler ⛓
2set PATH=..\..\..\lib;%PATH%
3ifort /fpp /standard-semantics /O3 /I:..\..\..\include main.F90 ..\..\..\lib\libparamonte*.lib /exe:main.exe
Example Unix / MinGW compile command via GNU gfortran
compiler ⛓
3gfortran -cpp -ffree-line-length-none -O3 -Wl,-rpath,../../../lib -I../../../inc main.F90 ../../../lib/libparamonte* -o main.exe
Example output ⛓
10getEggBoxLogUDF([
real(RKG) ::
0,
1], mu
= [
-1._RKG,
1._RKG], sigma
= [
2._RKG, .
5_RKG])
Postprocessing of the example output ⛓
3import matplotlib.pyplot
as plt
17xlab = {
"CK" :
"X ( real/imaginary components )"
18 ,
"IK" :
"X ( integer-valued )"
19 ,
"RK" :
"X ( real-valued )"
21legends = [
r"$\mu = 0.0,~\sigma = 3.0$"
22 ,
r"$\mu = 0.0,~\sigma = 1.0$"
23 ,
r"$\mu = 0.0,~\sigma = 0.3$"
24 ,
r"$\mu = -2.,~\sigma = 1.0$"
27for kind
in [
"IK",
"CK",
"RK"]:
31 pattern =
"*.D1."+kind+
".txt"
32 fileList = glob.glob(pattern)
33 if len(fileList) == 1:
35 df = pd.read_csv(fileList[0], delimiter =
",")
37 fig = plt.figure(figsize = 1.25 * np.array([6.4, 4.8]), dpi = 300)
41 plt.plot( df.values[:, 0]
44 , linewidth = linewidth
47 plt.plot( df.values[:, 1]
50 , linewidth = linewidth
54 plt.plot( df.values[:, 0]
57 , linewidth = linewidth
64 plt.xticks(fontsize = fontsize - 2)
65 plt.yticks(fontsize = fontsize - 2)
66 ax.set_xlabel(xlab[kind], fontsize = 17)
67 ax.set_ylabel(
"Probability Density Function (PDF)", fontsize = 17)
69 plt.grid(visible =
True, which =
"both", axis =
"both", color =
"0.85", linestyle =
"-")
70 ax.tick_params(axis =
"y", which =
"minor")
71 ax.tick_params(axis =
"x", which =
"minor")
74 plt.savefig(fileList[0].replace(
".txt",
".png"))
76 elif len(fileList) > 1:
78 sys.exit(
"Ambiguous file list exists.")
81 pattern =
"*.D2."+kind+
".txt"
82 fileList = glob.glob(pattern)
83 if len(fileList) == 1:
85 df = pd.read_csv(fileList[0], delimiter =
",", header =
None)
88 npnt = math.isqrt(len(df[:, 0]))
89 gridx = np.reshape(df[:, 0], newshape = (npnt, npnt), order =
'F')
90 gridy = np.reshape(df[:,1], newshape = (npnt, npnt), order =
'F')
91 gridz = np.reshape(df[:,2], newshape = (npnt, npnt), order =
'C')
93 fig, ax = plt.subplots(subplot_kw = {
"projection":
"3d"})
94 fig = plt.figure(figsize = 1.25 * np.array([6.4, 4.8]), dpi = 300)
95 ax = fig.add_subplot(1, 1, 1, projection =
'3d')
97 ax.plot_surface(gridx, gridy, gridz, cmap =
'viridis', linewidth = 0)
98 ax.set_xlabel(
'X axis')
99 ax.set_ylabel(
'Y axis')
100 ax.set_zlabel(
"Log ( Density )", fontsize = 17)
102 plt.xticks(fontsize = fontsize - 2)
103 plt.yticks(fontsize = fontsize - 2)
105 plt.grid(visible =
True, which =
"both", axis =
"both", color =
"0.85", linestyle =
"-")
106 ax.tick_params(axis =
"y", which =
"minor")
107 ax.tick_params(axis =
"x", which =
"minor")
110 plt.savefig(fileList[0].replace(
".txt",
".png"))
112 elif len(fileList) > 1:
114 sys.exit(
"Ambiguous file list exists.")
Visualization of the example output ⛓
- Test:
- test_pm_distEggBox
Final Remarks ⛓
If you believe this algorithm or its documentation can be improved, we appreciate your contribution and help to edit this page's documentation and source file on GitHub.
For details on the naming abbreviations, see this page.
For details on the naming conventions, see this page.
This software is distributed under the MIT license with additional terms outlined below.
-
If you use any parts or concepts from this library to any extent, please acknowledge the usage by citing the relevant publications of the ParaMonte library.
-
If you regenerate any parts/ideas from this library in a programming environment other than those currently supported by this ParaMonte library (i.e., other than C, C++, Fortran, MATLAB, Python, R), please also ask the end users to cite this original ParaMonte library.
This software is available to the public under a highly permissive license.
Help us justify its continued development and maintenance by acknowledging its benefit to society, distributing it, and contributing to it.
- Copyright
- Computational Data Science Lab
- Author:
- Amir Shahmoradi, Oct 16, 2009, 11:14 AM, Michigan
Definition at line 110 of file pm_distEggBox.F90.