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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)
Visualizing min, max and mean
x = [1 2 3 4 5]; ymin = [0.01 0.02 0.03 0.04 0.05]; % lower error bar position ymax = [0.02 0.03 0.04 0.05 0.06]; % uppe...
6 years ago | 0
how to draw a bar chart with max and min
x = [1 2 3 4 5]; ymin = [0.01 0.02 0.03 0.04 0.05]; % lower error bar position ymax = [0.02 0.03 0.04 0.05 0.06]; % uppe...
6 years ago | 0
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)
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 =...
7 years ago | 0
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)
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...
7 years ago | 0
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)
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 ...
7 years 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.
7 years ago | 5 downloads |
![Thumbnail](/matlabcentral/mlc-downloads/downloads/submissions/61507/versions/1/screenshot.jpg)
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 ...
8 years ago | 0
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 | 12 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 | 75 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 | 7 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 | 28 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)
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...
8 years ago | 1 answer | 0
1
answerSubmitted
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)