Answered

Define a variable?

The red underline occurs when you have not preallocated your array (or matrix). You can just do k = zeros(1,n); for i = 1:n ...

Define a variable?

The red underline occurs when you have not preallocated your array (or matrix). You can just do k = zeros(1,n); for i = 1:n ...

4 days ago | 0

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Question

Understanding CWT Morlet: Time and frequency resolution

Hello all, I have been using a continuous 1-D wavelet transform (MATLAB cwt function) to compute and plot wavelet scalograms. F...

1 month ago | 1 answer | 0

Answered

how to count the number of occurrences of these numbers (with some conditions)

Hi, The code below should solve your problem. A(1,:) = [1,2,5,2,1,2]; A(2,:) = [0,1,1,0,1,0]; uA = unique(A(1,:)); answ...

how to count the number of occurrences of these numbers (with some conditions)

Hi, The code below should solve your problem. A(1,:) = [1,2,5,2,1,2]; A(2,:) = [0,1,1,0,1,0]; uA = unique(A(1,:)); answ...

2 months ago | 0

Solved

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...

2 months ago

Solved

Find the longest sequence of 1's in a binary sequence.

Given a string such as s = '011110010000000100010111' find the length of the longest string of consecutive 1's. In this examp...

2 months ago

Solved

Times 2 - START HERE

Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

2 months ago

Answered

Pre-allocation issue non existent before

First of all, when I ran your code, Avg_saving outputs 1 x 200 double array, so you might want to preallocate the arrays in righ...

Pre-allocation issue non existent before

First of all, when I ran your code, Avg_saving outputs 1 x 200 double array, so you might want to preallocate the arrays in righ...

2 months ago | 0

Answered

how do I put arrays into a for loop

To calculate the mean of the first N elements of an array, you can use mean_y1 = mean(y1(1:N)); However, you may import a .ma...

how do I put arrays into a for loop

To calculate the mean of the first N elements of an array, you can use mean_y1 = mean(y1(1:N)); However, you may import a .ma...

2 months ago | 0

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Answered

Changing a a value in table column dependent on another column.

You can just do e = [ 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 78 78 78 78 78 78 78 78 78 78]; e = e'; d = [ 2 2 2 2 2 2 2 2 2 2 2 2 2 ...

Changing a a value in table column dependent on another column.

You can just do e = [ 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 78 78 78 78 78 78 78 78 78 78]; e = e'; d = [ 2 2 2 2 2 2 2 2 2 2 2 2 2 ...

2 months ago | 0

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Answered

Find the index range of ones/trues?

I made a brief function that gives you a two-column matrix of the start and end indices when a logical vector is given as an inp...

Find the index range of ones/trues?

I made a brief function that gives you a two-column matrix of the start and end indices when a logical vector is given as an inp...

2 months ago | 0

Answered

how to extract data from .mat file?

If you want to extract first 10000 elements from the x, you can just do extracted_x = x(:,:,1:10000); % Or if you want specifi...

how to extract data from .mat file?

If you want to extract first 10000 elements from the x, you can just do extracted_x = x(:,:,1:10000); % Or if you want specifi...

2 months ago | 0

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Answered

How to know which loop is being calculated?

Hello, To find out which step the loop is processing, you can always click pause and check "k" and "j". However, you can also ...

How to know which loop is being calculated?

Hello, To find out which step the loop is processing, you can always click pause and check "k" and "j". However, you can also ...

2 months ago | 0

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Answered

Morlet wavelet: what is the difference between 'morl' and 'amor' wavelets?

Hi Maja, It seems quite late to answer your question, but to simply put, the difference between 'morl' and 'amor' wavelets lies...

Morlet wavelet: what is the difference between 'morl' and 'amor' wavelets?

Hi Maja, It seems quite late to answer your question, but to simply put, the difference between 'morl' and 'amor' wavelets lies...

3 months ago | 0