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Chunru


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DSO National Laboratories

408 total contributions since 2013

Matlab user since 1990

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Answered
solving the Transfer function
% Divide G(s) into two parts (or manually simplify it) h1 = tf([0.02 1], [0.005 1 0 0 0]); h2 = tf([0.025 1], [0.001 1]); g =...

11 hours ago | 1

| accepted

Answered
I need to create a nested struct from nested folders
% List all the file in current folder and subfolders fn = dir('**/*'); % structure for the information of all the file % f...

1 day ago | 0

Solved


Replace Nonzero Numbers with 1
Given the matrix x, return the matrix y with non zero elements replaced with 1. Example: Input x = [ 1 2 0 0 0 ...

1 day ago

Solved


Matrix multiplication across rows
Given matrix m, return matrix n such that, rows of n are result of multiplication of the rows of the input matrix Example ...

1 day ago

Solved


A matrix of extroverts
Now that the introverts have had their script, the extroverts spoke up (naturally!) and demanded one as well. You will be given...

1 day ago

Solved


Convert matrix to 3D array of triangular matrices
Given a 2D numeric array x in which each column represents the vectorized form of an upper triangular matrix, return a 3D array ...

1 day ago

Answered
Running the Same code for Multiple Files in a Folder
Here is a schetch of the solution: fn = dir('a*.txt'); % obtain the file information 'a*.txt'. make your own modification for...

1 day ago | 0

Answered
issue when creating and saving file to specific folder
When dataFolder is a variable, change directory with the following statement: cd(dataFolder) ;

1 day ago | 1

Solved


Too Many Zeros, Dump Them!
Sometimes when I create a matrix, I use this syntax: a = zeros(1000,1000); But when the function ends, I find that I don'...

1 day ago

Solved


Enlarge array
Given an m-by-n numeric array (A) and a 1-by-2 vector (sz) indicating the dimensions [p q] to enlarge each element, return an (m...

1 day ago

Solved


Remove entire row and column in the matrix containing the input values
Remove the entire row and column from the matrix containing specific values. The specified value can be a scalar or a vector. Fo...

1 day ago

Solved


frame of the matrix
Given the matrix M, return M without the external frame.

1 day ago

Solved


subtract central cross
Given an n-by-n square matrix, where n is an odd number, return the matrix without the central row and the central column.

1 day ago

Answered
Bellhop: index exceeds the number of array elements (0)
Check the quotation marks. AcousticToolbox input use the single quote " ' " for input. 260.0 1502.43 / ’A’ 0.0 260.0 1600....

1 day ago | 1

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Answered
How to vertically combine two matrices with a space in-between them?
You can insert one row of NaN. An array or matrix must be filled with numbers and cannot have blanks (unless you use strings). ...

2 days ago | 0

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Answered
Code to solve integral with cosine and theta
integrate it manually integrate it symbolically syms x f(x) = cos(x).^2 int(f(x), 0, pi/2) integrate it numerically x = li...

2 days ago | 0

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Answered
Extracting elements from one matrix and placing in another
The following will do. i = [7 10 34 52 79 82 88 94 100 115] %posi SLP_top_10 = yearly_array2(:,:,i);

2 days ago | 0

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Solved


Close MATLAB with keyboard
Close MATLAB with keyboard without using mouse

3 days ago

Solved


Back to basics 11 - Max Integer
Covering some basic topics I haven't seen elsewhere on Cody. Return the largest positive integer MATLAB can handle.

3 days ago

Answered
How does division "/" = work for integer types?
MATLAB rounds the results when dividing integer data types. That is to say: uint32(1) /uint32(2) = round(1/2) = round(0.5) =1 ...

3 days ago | 0

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Answered
Simple for Loop calculation help MATLAB!
Using loop (for integer number of years): P0 = 1000; r = 0.05; y = 3; P = P0; % initialization for i=1:y P = P0*...

3 days ago | 0

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Answered
Plotting multiple images in subplot with reducing subplot distance and make title inside the each subplot images
Use tiledlayout to control the gaps. You can use text(x,y, 'title') to place text anywhere. % loose' (default) | 'compact' | '...

3 days ago | 1

| accepted

Answered
how to south outside text
bar(rand(5,2)); % some plot legend('A', 'B', 'Location', 'southoutside'); % legend can be placed southout...

3 days ago | 0

Answered
Why do I get an error message when I questdlg function
Add the default button (last argument) to be one of the specified buttons: answer1 = questdlg('Strained Method?', ... 'Option...

3 days ago | 0

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Solved


Evil Number
Check if a given natural number is evil or not. Read more at <https://oeis.org/A001969 OEIS>.

5 days ago

Solved


N-th Odious
Given index n return n-th <https://oeis.org/A000069 odious number>.

5 days ago

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Find the 9's Complement
Find the 9's complement of the given number. An example of how this works is <http://electrical4u.com/9s-complement-and-10s-c...

5 days ago

Solved


Write c^3 as sum of two squares a^2+b^2
write c^3 as sum of two squares a^2+b^2. a and b must be integer and greater than zero. For example 5^3 = 2^2 + 11^2 5...

5 days ago

Solved


Predicting life and death of a memory-less light bulb
*&#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &...

5 days ago

Solved


A Simple Tide Gauge with MATLAB
*&#8767 &#8767 &#8767 &#8767 &#8767 &#8767 &#8767 &#8767* You are standing in a few inches of sea water on a beach. You a...

5 days ago

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