Return the Probability Density Function (PDF) of the LogUniform distribution for an input x
within the support of the distribution \(x \in [0 < x_\mathrm{min}, x_\mathrm{max} < +\infty]\).
More...
Return the Probability Density Function (PDF) of the LogUniform distribution for an input x
within the support of the distribution \(x \in [0 < x_\mathrm{min}, x_\mathrm{max} < +\infty]\).
See the documentation of pm_distLogUnif for more information on the LogUniform distribution.
- Parameters
-
[out] | pdf | : The output scalar or array of the same shape as any input array-like argument, of the same type and kind the input argument x , containing the natural logarithm of the PDF of the distribution. |
[in] | x | : The input scalar or array of the same shape as other array like arguments, of type real of kind any supported by the processor (e.g., RK, RK32, RK64, or RK128), containing the value at which the PDF must be computed.
|
[in] | pdfnf | : The input scalar or array of the same shape as other array-like arguments, of the same type and kind as x , containing the normalization factor of the PDF of the LogUniform distribution.
Specifying this argument when calling this procedure repeatedly with fixed \((x_\mathrm{min}, x_\mathrm{max})\) parameters will significantly improve the runtime performance.
This argument can be readily obtained by calling getLogUnifPDFNF(logMinX, logMaxX).
|
Possible calling interfaces ⛓
Return the Probability Density Function (PDF) of the LogUniform distribution for an input x within th...
This module contains classes and procedures for computing various statistical quantities related to t...
- Warning
- Be warned that the procedures under this generic interface have no mechanism for checking for the consistency of the specified input arguments with each other.
-
The
pure
procedure(s) documented herein become impure
when the ParaMonte library is compiled with preprocessor macro CHECK_ENABLED=1
.
By default, these procedures are pure
in release
build and impure
in debug
and testing
builds.
- See also
- setLogUnifPDF
Example usage ⛓
11 type(display_type) :: disp
15 call disp%show(
"!%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%")
16 call disp%show(
"! Compute the Probability Density Function (PDF) of the LogUniform distribution.")
17 call disp%show(
"!%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%")
21 call disp%show(
"call setLogUnifPDF(PDF(1), x = 3., pdfnf = getLogUnifPDFNF(logMinX = log(2.), logMaxX = log(5.)))")
28 call disp%show(
"call setLogUnifPDF(PDF(1:3), x = [3., 4., 2.5], pdfnf = getLogUnifPDFNF(logMinX = log(2.), logMaxX = log(5.)))")
40 real :: MinX(
2), MaxX(
2), X(
2000), PDF(
2), PDFNF(
2)
41 integer(IK) :: fileUnit, i
42 call setLogSpace(X, logx1
= log(
0.1), logx2
= log(
13.))
46 open(newunit
= fileUnit, file
= "setLogUnifPDF.RK.txt")
49 if (MinX(
1)
<= X(i)
.and. X(i)
<= MaxX(
1))
call setLogUnifPDF(PDF(
1), X(i), PDFNF(
1))
50 if (MinX(
2)
<= X(i)
.and. X(i)
<= MaxX(
2))
call setLogUnifPDF(PDF(
2), X(i), PDFNF(
2))
51 write(fileUnit,
"(*(g0,:,', '))") X(i), PDF
Return the logSpace output argument with size(logSpace) elements of logarithmically-evenly-spaced val...
Generate and return the normalization factor of the PDF of the LogUniform distribution for an input p...
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 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 LK
The default logical kind in the ParaMonte library: kind(.true.) in Fortran, kind(....
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...
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 ⛓
14+0.363785535,
+0.272839159,
+0.436542660
Postprocessing of the example output ⛓
3import matplotlib.pyplot
as plt
16xlab = {
"CK" :
"X ( real/imaginary components )"
17 ,
"IK" :
"X ( integer-valued )"
18 ,
"RK" :
"X ( real-valued )"
20legends = [
r"$x_{min} = +3., x_{max} = +7.$"
21 ,
r"$x_{min} = +2., x_{max} = +10.$"
24for kind
in [
"IK",
"CK",
"RK"]:
26 pattern =
"*." + kind +
".txt"
27 fileList = glob.glob(pattern)
28 if len(fileList) == 1:
30 df = pd.read_csv(fileList[0], delimiter =
", ")
32 fig = plt.figure(figsize = 1.25 * np.array([6.4, 4.8]), dpi = 200)
36 plt.plot( df.values[:, 0]
39 , linewidth = linewidth
42 plt.plot( df.values[:,1]
45 , linewidth = linewidth
49 plt.plot( df.values[:, 0]
52 , linewidth = linewidth
56 , fontsize = fontsize - 5
59 plt.xticks(fontsize = fontsize - 2)
60 plt.yticks(fontsize = fontsize - 2)
61 ax.set_xlabel(xlab[kind], fontsize = 17)
62 ax.set_ylabel(
"Probability Density Function (PDF)", fontsize = 17)
66 plt.grid(visible =
True, which =
"both", axis =
"both", color =
"0.85", linestyle =
"-")
67 ax.tick_params(axis =
"y", which =
"minor")
68 ax.tick_params(axis =
"x", which =
"minor")
71 plt.savefig(fileList[0].replace(
".txt",
".png"))
73 elif len(fileList) > 1:
75 sys.exit(
"Ambiguous file list exists.")
Visualization of the example output ⛓
- Test:
- test_pm_distLogUnif
- Todo:
- Very Low Priority: This generic interface can be extended to
complex
arguments.
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 478 of file pm_distLogUnif.F90.