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Sathyanarayan Rao
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Professional Interests: Numerical Computing and Computer Modeling
MATLAB
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Submitted
Electrical resistivity tomography Geometric Factors
Comparison of analytical and numerical geometric factors for surface-borehole configuration.
6 years ago | 1 download |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/64723ab1-1479-47a7-90d5-bf39558b50ff/29a257e0-3fd4-477a-aa3f-0e089853cede/images/screenshot.png)
Submitted
Estimating parameters for van-Genuchten soil water retention curve model
Matlab inbuilt 'nlinfit' is used to estimate van-Genuchten fitting parameters.
6 years ago | 1 download |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/67075/versions/3/screenshot.png)
Submitted
Convert white pixels in a binary image to coordinates
This function forms coordinate array [x,y] of white pixels based on user defined range.
6 years ago | 1 download |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/66901/versions/1/screenshot.png)
Submitted
Perpendicular Line to a given line forming a T-shape
Given any two points, two other points can be constructed forming a T shape
6 years ago | 1 download |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/66240/versions/2/screenshot.jpg)
Submitted
Instrument output text file with header and unwanted lines to matlab matrix
Removes header and unwanted lines from any text file and saves data in matlab matrix form.
6 years ago | 1 download |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/65083/versions/1/screenshot.png)
Submitted
JPG image to EIDORS finite element model data via linear interpolation
EIDORS image is generated based on jpg image pixels.
6 years ago | 1 download |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/64943/versions/1/screenshot.png)
Submitted
Remove reciprocals from a Electrical Impedance Tomography (EIT) scheme
Removes reciprocal quadrupoles from a EIT scheme.
7 years ago | 1 download |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/64620/versions/2/screenshot.png)
Submitted
Integer to Integer map using logical indexing
Logical indexing is used to map integer from one set to another
7 years ago | 1 download |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/64282/versions/1/screenshot.jpg)
Submitted
carnatic music mayamalavagowla first sarali swara generation in MATLAB
The semitones of sarigama is generated in matlab using a sinusoidal signal.
7 years ago | 1 download |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/64025/versions/1/screenshot.jpg)
Submitted
Binary image to Finite element mesh ( GMSH geo file )
This code creates GMSH geo file from an image boundary that can be readily meshed using GMSH.
7 years ago | 5 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/61507/versions/1/screenshot.jpg)
Submitted
Visualizing GMSH .msh file in MATLAB using TRIPLOT
In this code, I import GMsh .msh file and form elements and nodes matrix which is then visualized.
8 years ago | 11 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/59682/versions/1/screenshot.jpg)
Submitted
Electrical Impedance Tomography Image Reconstruction using MATLAB based freeware EIDORS
In this code, using EIDORS Electrical Impedance Tomographic Image Reconstruction is demonstrated.
8 years ago | 71 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/59263/versions/1/screenshot.jpg)
Submitted
MATLAB to gmsh .geo file
MATLAB to gmsh compatible text file using fprintf
8 years ago | 4 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/58916/versions/1/screenshot.jpg)
Submitted
Points to Surface Matrix
Given a set of coordinates and its connection information, surface data is generated.
8 years ago | 1 download |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/58822/versions/1/screenshot.jpg)
Submitted
Regularized Least Square: Tikhonov Regularization test for Hilbert matrix.
Regularized Least Square and ordinary least square solution are compared.
8 years ago | 11 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/58736/versions/1/screenshot.jpg)
Submitted
Linear Regression: Least Square Solution
Least square solution is demonstrated for human population data
8 years ago | 2 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/58482/versions/1/screenshot.jpg)
Submitted
Transmittance and Reflectance Spectra of Multilayered Dielectric Stack using Transfer Matrix Method
Transfer Matrix Method is used to calculate transmittance and reflectance of dielectric layers.
8 years ago | 27 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/47637/versions/2/screenshot.jpg)
Submitted
Electrical Resistivity Forward problem: Poisson's equation with heterogeneous conductivity
Poisson's equation is solved for a heterogeneous medium with varying conductivity.
8 years ago | 2 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/57814/versions/1/screenshot.jpg)
Submitted
Two dimensional wave interference using Finite Difference Time Domain method (FDTD).
Using FDTD, interference of two sinusoidal source is visualized using FDTD method in TM mode.
8 years ago | 4 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/55301/versions/1/screenshot.jpg)
Submitted
Magic Time Step in 1D FDTD
1D FDTD illustration using magic time step
8 years ago | 3 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/55300/versions/1/screenshot.jpg)
Submitted
Explicit Numerical Methods to solve Differential Equation
Here , I compare Euler, Runge-Kutta and Adam-Bashforth methods to integrate a simple function.
8 years ago | 1 download |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/54726/versions/2/screenshot.png)
Submitted
Analytical plot of Dielectric function of Lorentz medium
This code plots complex dielectric function of a Lorentz medium using its analytical formula.
8 years ago | 7 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/54331/versions/1/screenshot.jpg)
Submitted
Total Field Scattered Field source with Perfectly Matched Layer Boundaries
In this code, TF/SF source is implemented for 1D FDTD source along with PML Boundary condition.
9 years ago | 2 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/53638/versions/1/screenshot.jpg)
Submitted
Optical Spectra of Dielectric slab using 1D Finite Difference Time Domain (FDTD).
This code calculates Transmission and Reflection spectra of Etalon slab using FDTD method.
9 years ago | 1 download |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/53637/versions/1/screenshot.jpg)
Submitted
1D Finite Difference Time Domain simulation (FDTD) with Perfectly Matched Layer (PML)
FDTD is illustrated with PML absorbing boundary condition at both ends of 1D space grid.
9 years ago | 5 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/53433/versions/1/screenshot.jpg)
Submitted
Optical Linear Absorption of a Two Level System
In this code, differential equation for optical polarization is solved.
9 years ago | 1 download |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/53379/versions/1/screenshot.jpg)
Submitted
Band structure of GaAs using Parabolic Approximation
Band structure of GaAs using Parabolic Approximation
9 years ago | 3 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/52690/versions/1/screenshot.png)
Submitted
Fourier transform DFT for selected range of frequencies
For selected frequency range, DFT is computed.
9 years ago | 1 download |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/52685/versions/1/screenshot.jpg)
Submitted
Numerical Solution to Optical Bloch Equation for a two level atom using Runge Kutta method
Numerical Solution to Optical Bloch Equation for a two level atom using Runge Kutta method
9 years ago | 2 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/52305/versions/1/screenshot.jpg)
Submitted
Simulation of Rabi Flopping in a Two Level Atom using Finite Difference Method
Rabi flopping for a two level quantum system is simulated for different detuning frequencies.
9 years ago | 3 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/52220/versions/1/screenshot.jpg)