# SungJun Cho

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Question

Clarifications on Dunn-Sidak Approach in multcompare.m

Hi all, I am trying to perform the Dunn's test as a non-parametric post hoc multiple comparison test based on the statistical r...

3 years ago | 0 answers | 0

### 0

answersDefine 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 ...

3 years ago | 0

| accepted

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...

3 years ago | 1 answer | 0

### 1

answerhow 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...

3 years 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...

3 years 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...

3 years 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:...

3 years ago

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...

3 years ago | 0

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...

3 years ago | 0

| accepted

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 ...

3 years ago | 0

| accepted

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...

3 years ago | 0

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...

3 years ago | 0

| accepted

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 ...

3 years ago | 0

| accepted

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 years ago | 0