Mohammad Sami

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377 total contributions since 2014

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Answered
Invalid training data. The output size (7) of the last layer does not match the number of classes (10).
This is because of this part of the setcat_and_table_to_cell function validcats = string(0:9); % define valid labels for catego...

5 jours ago | 0

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Accessing a structure from its field value? Going from field value backwards to structure index.
I would suggest instead of defining a patient class to store information, you store the patient information in a table. That is...

12 jours ago | 0

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Why I cannot get rid of Nan columns
The issue is in the if statements. You are doing a vector comparison, which will return a logical vector. If statement requires...

13 jours ago | 0

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How to output and name variables generated in 'for' loop into workspace.
You can store the values in a cell array. Edited portion of your code if true Signal{i} = Amp * sin(2*pi*Frequency*t)...

17 jours ago | 0

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How do I check if an entire array matches the elements of another array (different size)?
What you need is the ismember function. if true [Lia,Locb] = ismember(person1, person2); Allperson1inperson2 = all(L...

17 jours ago | 0

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Accessing elements of lists within lists
In Matlab cell arrays are the only type that can store heterogeneous data. Just change the outside [] to {} if you want to have...

17 jours ago | 0

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Stacked histogram or Stacked bar
You can try the following edges=[0 300 700 1200 2300 Inf]; %redefine the edges [N,edges] = histcounts(GTDF,edges); N = N./sum...

18 jours ago | 0

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Decimation - Optimized for speed
This problem is similar to http://www.mathworks.com/matlabcentral/cody/problems/1092-decimation, only this time the score will b...

18 jours ago

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Determine the number of odd integers in a vector
Determine the number of unique odd integers in a vector. Examples: Input x = [2 5 8 3 7 1]; Output y = 4; Inp...

18 jours ago

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Reference Index Number
Given a reference set R of elements (each unique but identical in type), and a list V of elements drawn from the set R, possibly...

18 jours ago

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Insert zeros into vector
Insert zeros after each elements in the vector. Number of zeros is specified as the input parameter. For example: x = [1 ...

18 jours ago

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Decimation
When dealing to the Roman Army, the term decimate meant that the entire unit would be broken up into groups of ten soldiers, and...

18 jours ago

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Change the sign of even index entries of the reversed vector
change the signs of the even index entries of the reversed vector example 1 vec = [4 -1 -2 9] ans = [9 2 -1 -4] example2...

18 jours ago

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Unique values without using UNIQUE function
You must return unique values in a vector in *stable* mode without using the unique function. About stable order flag: ...

18 jours ago

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Set a diagonal
Given a matrix M, row vector v of appropriate length, and diagonal index d (where 0 indicates the main diagonal and off-diagonal...

18 jours ago

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Create a vector whose elements depend on the previous element
The idea is to create a vector A whose elements depend on the previous element : *A(i+1) = 2*A(i)+1* *2 Inputs*: - A : The...

18 jours ago

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Max index of 3D array
Given a three dimensional array M(m,n,p) write a code that finds the three coordinates x,y,z of the Maximum value. Example ...

18 jours ago

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Finding peaks
Find the peak values in the signal. The peak value is defined as the local maxima. For example, x= [1 12 3 2 7 0 3 1 19 7]; ...

18 jours ago

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Find nth maximum
Find nth maximum in a vector of integer numbers. Return NaN if no such number exists. x = [2 6 4 9 -10 3 1 5 -10]; So ...

18 jours ago

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Create an index-powered vector
Given a input vector x, return y as index-powered vector as shown below. Example x = [2 3 6 9] then y should be [...

18 jours ago

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Oh Zero Zero Zero!!!
Hello all, So you have to find the largest section of zeros in a vector and then find the length of those zeros and there start...

18 jours ago

Answered
Convert data from minutes to hourly average
If your data is in timetable / table format. You can use the groupsummary to summarise your data into any intervals. a = groups...

18 jours ago | 0

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Multiple callbacks to one callback
You can assign the same function as callback to multiple ui components. Inside you function you will need to be able to access ...

18 jours ago | 0

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Answered
How to convert selected image to gray scale using MATLAB GUI
Before you can process the image, you need to load it using imread. Also it's a bad idea to directly concatenate file paths. Fo...

19 jours ago | 0

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How can I get the exact plots mentioned in the figure below
You can start here N = 50; O = 10*randn(2,10*N); tiledlayout(2,5); for i = 1:10 ax = nexttile; X = 10*randn(2,64); % gener...

19 jours ago | 0

Answered
Is it possible to use Arrayfun across rows
Something like this will work. i = [false; A.Var1(1:end-1) == A.Var1(2:end)]; j = find(i); A.Var3(i) = A.Var2(j) .* A.Var2(j-...

20 jours ago | 0

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Find last zero for each column
Given a numeric array of arbitrary size, return the row index of the last zero for each column. If a column contains all nonzero...

20 jours ago

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Count consecutive 0's in between values of 1
So you have some vector that contains 1's and 0's, and the goal is to return a vector that gives the number of 0's between each ...

20 jours ago

Solved

Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)
For a row vector: V=[7 1 2 -3] there is one sign change (from 2 to -3). So, the function you write must return N=1. F...

20 jours ago

Solved

Symmetry of vector
Determine whether the vector is symmetric or not (vector could be even or odd in length). For example: x = [1 2 3 3 2 1] ...

20 jours ago