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madhan ravi


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4.220 total contributions since 2018

Communication through MATLAB is always better than arguing.

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Answered
Undefined function or variable 'imnlmfilt'
It requires Image Processing Toolbox and a valid license for it. Contact your IT department in your University to get the licens...

1 día ago | 0

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Answered
Solving symbolic trig equation in terms of theta, using "sol."
The solution is returned in a struct so to access it you need to use the dot. It has occurred that there are two solutions?

2 días ago | 0

| accepted

Answered
How to convert a char into double?
sscanf(f,'%d')

3 días ago | 0

Answered
lines through markers on legend
x = -10 : 0.1 : 10; y = cos(x); plot(x, y, '--o', 'MarkerSize', 5) hold on y = sin(x) plot(x, y, '--d', 'MarkerSize',...

3 días ago | 1

Answered
How to create function handle with matrix inputs, vector output?
FCN = @(x) x(:, 1) + x(:, 2); sum(in, 2) % ??

3 días ago | 0

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Answered
"str2sym" delete the element wise operation
doc matlabFunction

3 días ago | 1

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Answered
How to replace multiple elemets at particular index in vector ?
a(3 : 2 : 7) = [.7, .1, .9]

4 días ago | 1

| accepted

Answered
extract num and den from matrix transfer function
Use it inside the loops, preallocation is recommended for the variables.

4 días ago | 0

Answered
How can i get the last element of a maxium with the help of findpeaks?
<https://www.mathworks.com/help/signal/ref/findpeaks.html#bufhxsk-2> It states: _“For the flat peak, the function returns ...

4 días ago | 0

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Answered
Error 'Array indices must be positive integers or logical values.' when the number of indices is large
In this case it’s probable that b has elements less than 1 and greater than 32. Outside_bounds = nnz((b < 1) | (b > 32)) % t...

5 días ago | 0

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Answered
fzero or fplot function
The anonymous function should perform element wise operations (warnings for fplot) and (errors for fzero).

5 días ago | 0

Answered
How parentheses effects multiplication with pi ?
In the first the order of operation is from left to right. In the second the order of operation is inside the parenthesis and...

6 días ago | 0

Answered
How do I delete my account?
Contact MathWorks Support Team.

6 días ago | 0

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Answered
how to label strings in an array with an ID
T = cell2table(StringID(:, 2)); T.Properties.RowNames = StringID(:, 1); Wanted = T{num2cell(tc), :}

6 días ago | 0

Answered
Error while plotting matrix of complex numbers
plot(real(sub), 'r-', imag(sub) ,'b*');

7 días ago | 0

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Answered
Variable for loop storage
low = A(lowPs, :)

7 días ago | 0

Answered
Variable for loop storage
low = cell(numel(lowPs), 1); for k = 1 : numel(lowPs) B = A(:,1) == lowPs(k); %%row numbers in A where A(:,1) that co...

7 días ago | 0

| accepted

Answered
random matrix with a given number of specified elements
v = [repelem(1, 5), repelem(0, 4)]; Wanted = v(reshape(randperm(numel(v)), 3, []))

7 días ago | 1

| accepted

Answered
How can I randomize the order of a matrix of images
Filenames = compose('image%d.png', 1:4); Filenames(randperm(numel(Filenames))) % ?

7 días ago | 0

Answered
Using Surf function with matrix
surf(C)

8 días ago | 0

Answered
Plotting in 3d
doc fsurf

9 días ago | 0

Answered
wrong differential equation solution
a1 = matlabFunction(simplify(sol)); a = matlabFunction((1/80)*(36*exp(-t)-35*cos(t)-cos(3*t)+125*sin(t)-3*sin(3*t))); t ...

9 días ago | 1

Answered
Livescript: equation number
No, the workaround would be to use section titles.

9 días ago | 0

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Answered
Why does the second matrix start with zeros?
MATLAB assigns zero to the previous indices, for better understanding: clear a a(11) = 1; % now you will see elements fro...

9 días ago | 1

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Answered
How to remove array items that include a certain substring?
v = regexprep(filetable, '^[a,b].*', ''); v(cellfun('isempty', v)) = []

10 días ago | 0

Answered
Problem about rounding to 0
w = u_1 * u_2 - u_3 * sym(u_4) Click on the tag floating-point.

11 días ago | 1

Answered
How can I get maximum and minimum value with sym variables
Use matlabFunction() and fminbnd() to find the minimum value of that function and to find the maximum extreme use negative sign ...

11 días ago | 0

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Answered
Sorting a matrix using it's index
Asort2 = A(sub2ind(size(A), repmat((1:size(A,1)).', 1, size(A,2)), idA))

11 días ago | 0

Answered
How to reshape matrix 2 columns by 2 columns
First = matrix(:, 1:2:end); Second = matrix(:, 2:2:end); Wanted = [First(:), Second(:)]

11 días ago | 0

Answered
SUBS function not working properly - R2020a
double(val) %or vpa(val)

11 días ago | 0

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