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madhan ravi


3,443 total contributions since 2018

Communication through MATLAB is always better than arguing.

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Answered
Symbolic Toolbox Integration Error
You probably have a variable named int, clear that workspace using: clear int %or clear all

6 hours ago | 1

| accepted

Answered
How to get the index of a value in a table?
index = find(TABLE{:,:}==specific_value) %or [~,index] = ismember(specific_value,TABLE{:,:}) If you're dealing with decimals ...

8 hours ago | 0

| accepted

Answered
Count in a loop
N = 100; % no loops needed p_x= -1+(1+1)*rand(N,1); p_y= -1+(1+1)*rand(N,1); p = sqrt(p_x.^2 + p_y.^2); fprintf('N...

12 hours ago | 1

Answered
How to use cellstr() without losing whitespace character?
Wanted = num2cell(your_char_array,2)

12 hours ago | 1

Answered
how to plot cell array
I don’t why you’re saying multidimensional cell array all I see in the picture is a cell array containing character array. ...

16 hours ago | 0

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Answered
Store values from a for loop into a matrix
RARmat = zeros(65, 3) for ii = 1:65 RARatio = AUC/RA; disp(RARatio) % RAR Matrix RARmat(ii, :) ...

21 hours ago | 0

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Answered
Creating a MatLab code to convert numerical grades into letter grades.
You should loop through mn and save the results as a cell array in a variable which is preallocated before loop using indexing. ...

1 day ago | 0

Answered
Showing error Matrix dimensions must agree
theta =0:2*pi:100; r=linspace(0,100,numel(theta)); % theta and r should have same length/ or either one be a scalar z=2*(r-4*...

1 day ago | 0

Answered
how to find how many elements are there in a cell of an array?
No_of_elements = cellfun(@numel, cells)

1 day ago | 0

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Answered
Assign values of a result to an input variable.
That’s not a good idea, see https://in.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dyn...

1 day ago | 0

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Answered
I keep getting a 'parse error' at '='
Change arctan() to *atan()* and y=0 to *y==0*. doc if

1 day ago | 0

Answered
How to replace last row of matrix with a vector?
Tutorial

2 days ago | 0

Answered
Create a 34 element column vector, PiVec, where every element is the irrational number pi
Use those commands and add/multiply with which number you want the elements to be. doc ones doc zeros

2 days ago | 0

Answered
making a random unique vector from 0 to 9999
doc randperm

2 days ago | 1

Answered
how to convert answer to one single number
f = @(x) 2.048*exp(-((x-5.056)/0.2349).^2) +... 1.089*exp(-((x-4.887)/0.4006).^2) +... 0.4116*exp(-((x-9.103)/5.731).^...

2 days ago | 0

Answered
How to store the results from a for loop into a matrix?
F = 2; x = .1:.05:1.9; Reactions = cell(numel(x),1); b = [0 F 0 F/2 0 0 0 0 0 0]'; % there's no point in defining it over an...

2 days ago | 0

Answered
Apply function on array
Probably you're looking for cumsum() doc cumsum

2 days ago | 0

Answered
find index of a element present in matrix
[~,Z]=max(A,[],2)

3 days ago | 0

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Answered
Array indices must be positive integers or logical values
beta Operator missing here ( M Note: Don’t name a variable beta because there is an inbuilt function named *beta()*. Prealloc...

4 days ago | 0

Answered
insert zero in chosen column of matrix randomly
ix = 1:2:size(A,1); A(ix(randi(numel(ix),1)),3)=0

4 days ago | 0

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Answered
Possible matlab bug with text() function?
When you name variable as the same name as the function this happens. clear text plot sin % not sure which function you’re...

4 days ago | 0

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Answered
Swapping the columns based on matrix even length
No matter odd or even: ix=(2:2:size(matrix,2)) + [0;-1]; % if > 2016b ix = bsxfun(@plus, 2:2:size(a,2), [0;-1]) Wanted = matr...

4 days ago | 1

Answered
how to make a legend for a single point
h=plot(i,Cm_1212_voigt,'.g') % inside loop legend(h,'Points') % outside loop

5 days ago | 0

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Answered
Delete rows in intervall
An another alternative: ix = (5:7:size(TABLE,1)) + [0;1;2]; %if > 2016b ix = bsxfun(@plus, 5:7:size(TABLE,1), [0;1;2]) TABLE...

5 days ago | 0

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Answered
How can I take a mean of a matrix only from 10 first rows?
>> X = rand(50000,3); % are you sure it's a 50000 by 3 matrix? >> mean(X(1:5000,:)) ans = 0.5028 0.5015 0.4978 ...

5 days ago | 0

Answered
logical array variables in a loop
It would been simpler if they were stored in a cell array: c{1} = outlier & incl_p; c{2}= outlier & incl_r; c{3} = ou...

6 days ago | 1

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Answered
How can i get sub matrices with using for loop
a=arrayfun(@(x)A(A==unique(x)),A,'un',0) celldisp(a) If you’re goal is simply to create A with repetitions of 10 then it...

6 days ago | 0

Answered
How can I plot a sin (x^2) function
fplot(@(x)sin(x.^2),[-pi,pi])

6 days ago | 1

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