Community Profile

# Sathyanarayan Rao

76 total contributions since 2013

Professional Interests: Numerical Computing and Computer Modeling

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Submitted

Remove reciprocals from a Electrical Impedance Tomography (EIT) scheme
Removes reciprocal quadrupoles from a EIT scheme.

How to extract data from a plot for various values of X and Y axis?
speed = [1 2 3 4 5] time = [0.03 0.05 0.07 0.09 0.1] h = plot(time,speed); xdata = (get(h, 'XData')) ydata =...

1 month ago | 0

Submitted

Integer to Integer map using logical indexing
Logical indexing is used to map integer from one set to another

Submitted

Decomposing stimulation pattern for electrical resistivity tomography into direct and reciprocal
Given a set of quadrupole pattern and measurement data, this code finds direct and reciprocals.

How to convert binary image to 2D triangulation?
Check this code that uses Gmsh https://nl.mathworks.com/matlabcentral/fileexchange/61507-binary-image-to-finite-element-mesh...

2 months ago | 0

Submitted

carnatic music mayamalavagowla first sarali swara generation in MATLAB
The semitones of sarigama is generated in matlab using a sinusoidal signal.

Solved

convert matrix to single column
given any matrix, convert it to single column

6 months ago

Solved

Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

6 months ago

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.

To read nodes and elements of the .msh file to Matlab
Please check http://nl.mathworks.com/matlabcentral/fileexchange/59682-visualizing-gmsh-msh-file-in-matlab-using-triplot and let ...

1 year ago | 0

Responded

Re: Importing a GMSH .msh file into NIRFAST(matlab platform)
Please check http://nl.mathworks.com/matlabcentral/fileexchange/59682-visualizing-gmsh-msh-file-in-matlab-using-triplot and let ...

1 year ago | 5514 views

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.

Submitted

Electrical Impedance Tomography Image Reconstruction using MATLAB based freeware EIDORS
In this code, using EIDORS Electrical Impedance Tomographic Image Reconstruction is demonstrated.

Submitted

MATLAB to gmsh .geo file
MATLAB to gmsh compatible text file using fprintf

Submitted

Points to Surface Matrix
Given a set of coordinates and its connection information, surface data is generated.

Submitted

Regularized Least Square: Tikhonov Regularization test for Hilbert matrix.
Regularized Least Square and ordinary least square solution are compared.

Submitted

Linear Regression: Least Square Solution
Least square solution is demonstrated for human population data

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.

Submitted

Electrical Resistivity Forward problem: Poisson's equation with heterogeneous conductivity
Poisson's equation is solved for a heterogeneous medium with varying conductivity.

Question

What is Block error in Simulink ?
I am trying to simulate a very simple RC circuit and I get the following error when I try to run the model. Each physical ne...

1 year ago | 0 answers | 0

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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.

Submitted

Magic Time Step in 1D FDTD
1D FDTD illustration using magic time step

Submitted

Explicit Numerical Methods to solve Differential Equation
Here , I compare Euler, Runge-Kutta and Adam-Bashforth methods to integrate a simple function.

Submitted

Analytical plot of Dielectric function of Lorentz medium
This code plots complex dielectric function of a Lorentz medium using its analytical formula.

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.

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.

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.

Submitted

Optical Linear Absorption of a Two Level System
In this code, differential equation for optical polarization is solved.

Submitted

Band structure of GaAs using Parabolic Approximation
Band structure of GaAs using Parabolic Approximation