Santhana Raj
Path Partner Technology
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https://sites.google.com/site/santhanarajarunachalam/ Professional Interests: Signal Processing, Automotive Radar, Condition Monitoring of rotating equipment.
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Feeds
FFT of sensor data
You are getting mirror images. except that matlab's FFT results are different from what you have read in your books. Normally FF...
mehr als 7 Jahre vor | 2
find commun neighbor of matrix
From my understanding of nodes, A =[0 1 0 1; 1 0 0 0; 0 1 0 0; 1 0 1 0;] h=zeros(4); for i=1:4 [~,H]=find(A(i,...
mehr als 7 Jahre vor | 0
Find the maximum value on each color dimension (red, green, or blue) and plot a circle using that color. There may be more than one pixel with a maximum value; if so, pick one pixel at random.
The property color in plot function takes input between 0 to 1. While your max color values are >1 usually. Try the below one: ...
mehr als 7 Jahre vor | 0
How to set different y limits for multiple subplots?
Your mistake is to use the function name as a variable. "min" The first loop will work. where you use the min function to get...
mehr als 7 Jahre vor | 2
How to display the name of my ODE used, as figure title?
The below code works in 2017a: figure('Name','SolverName','NumberTitle','off')
mehr als 7 Jahre vor | 0
Sum of elements per hour
try this: sum(M(find(M(:,1)=='1-Oct-13' & M(:,2)==1),3)) Repeat this in a for loop, and you can generate N.
mehr als 7 Jahre vor | 0
What is internal math of the pointsToWorld() function?
PointstoWorld function does the conversion of image points to the real world representation. The real world is some times called...
mehr als 7 Jahre vor | 0
When I use matlab neural network toolbox, what is the cost function of the training?
The default cost function is Cross Entropy, if am not wrong. You can check doc patternnet to get more details
mehr als 7 Jahre vor | 0
Data not being filtered out by threshold
If you see the help of diff, it says: diff(X), for a vector X, is [X(2)-X(1) X(3)-X(2) ... X(n)-X(n-1)]. So, in your case, ...
mehr als 7 Jahre vor | 0
Is there a way to plot a confusion matrix of the cross validation results?
I am not aware of any method to plot confusion matrix. But usually I calculate the precision and recall from the true positives...
mehr als 7 Jahre vor | 0
How create string like this: word+number+word with number=num2str(x)
x=2; y= ['I have' num2str(x) 'dogs'];
mehr als 7 Jahre vor | 3
| akzeptiert
2d plot of a function with two variables
No.You need not. generate vectors of x and t. Then implement the function for y. Use mesh to plot result. Remember to use the...
mehr als 7 Jahre vor | 0
how to calculate the classification accuracy in neural network toolbox?
There are various parameters that can and are used in different classification algorithms. Take a look at this wiki page: <ht...
mehr als 7 Jahre vor | 0
Error using xlsread (line 260)
<https://in.mathworks.com/matlabcentral/answers/305976-error-using-xlsread-line-249-excel-worksheet-could-not-be-activated>
mehr als 7 Jahre vor | 1
| akzeptiert
Problem subtracting and adding a value to a textbox using a popupmenu and push buttons
The GUI workspace handles variables differently than a normal function. The function subtract_callback has its own workspace and...
mehr als 7 Jahre vor | 0
GUI with guide, statements around the functions
U can use statements 'around' callback functions. You have to be more clear on this. Since you are new to GUIDE, I would advi...
mehr als 7 Jahre vor | 0
Loading in png file that is black
By saying that the image appears in black, do you mean that the image is still visible but the image is in grey scale?? The belo...
mehr als 7 Jahre vor | 1
| akzeptiert
Loading in png file that is black
The problem might be due to improper scaling or the type of image. Use imagesc
mehr als 7 Jahre vor | 0
why we need scale in implementations of FFT?
This is because the FFT equation implmented by Matlab is little different from your textbook equation. Usually in a engineeri...
mehr als 7 Jahre vor | 1
I want to solve this equation and plot it but lot of errors are coming kindly help
Matrices multiplication can be element by element or vector multiplication. For element by element, which I assume you want, th...
mehr als 7 Jahre vor | 0
How can I create the matrix in the photo?
Try making BNdog=[4 7]; instead of [4 4]
mehr als 7 Jahre vor | 0
Help with a for-loop of an array of iterative matrices
Consider one set of your code: col1 = rep1(:,1)'; col2 = rep1(:,2)'; col3 = rep1(:,3)'; col4 = rep1(:,4)'; col5...
mehr als 7 Jahre vor | 0
how to do curve smoothing in real time?
Try applying a moving average filter or otherwise called a box filter.
mehr als 7 Jahre vor | 0
numbers in random positions on a zero matrix
Start with the function randi(4). it generates random integers. It doesnt give 0, so you can generate with a max of 4 and subtra...
mehr als 7 Jahre vor | 0
Time shifting property DTFT
I suppose this is what you want to do: clc, clear all, close all; x=rand(1,21);n=0:20; k=0:20;w=(pi/20)*k; X=x...
mehr als 7 Jahre vor | 0
matlab 2017a takes 10 minutes+ to initialise
I had a similar problem. The reason in my case was because Matlab, due to some unknown reason, was taking too much time to locat...
mehr als 7 Jahre vor | 0
Importing / Xlsread: How to replace unknown character?
Instead of using xlsread, use readtable. one of its options is fileEncoding. I am sure it can read Swedish, but you can explo...
mehr als 7 Jahre vor | 0
How to design a position control in C using Matlab
For PID equation, you have to find the previous error values also. Foe example, for integral action, sum of all previous errors...
mehr als 7 Jahre vor | 0
Performance comparison plotting for different Back propagation algorithms
You have to calculate the mean square error and time taken. You can use (t-y) to calculate the error and tic/toc to calculate th...
mehr als 7 Jahre vor | 0
| akzeptiert
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