Jason

Active since 2016

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Write one year date into a excel?
If I want to write one year date into a excel, like year 2016. I have no idea how to code in matlab. Thanks 1/1/2016 1/2...

9 years ago | 1 answer | 0

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Question

Combine the subplot into a one plot
I have a for-loop, in each loop, it will draw a plot. How can I combine those each plot in a big plot? I mean how to combine ...

9 years ago | 1 answer | 0

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Question

How to insert a 50% image into this original image
I have a image, then I get 50% of this image, how to I insert this 50% image to the original image? Steganalysis

9 years ago | 1 answer | 0

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Question

How to get 1% of the image?
After I load a image, how do we get the 1% of the image?

9 years ago | 1 answer | 0

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Question

LSB watermark and LSB replacement difference?
Is those two are the same concept or any relationship between them? I search online and could not find any useful information. T...

9 years ago | 1 answer | 0

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Question

How to solve override writing file problem?
I have try-catch in my code, when I catch the error, I write the error information to a file, but it always override the previou...

9 years ago | 1 answer | 0

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Question

!!!Very challenge - copy one row to following two row
I have a excel file, in row 11, I have some headers. A11 is Date, B11 is Time, C11-G11 is P1 to P5. Starts row 12, there are da...

9 years ago | 1 answer | 0

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Question

How to write error information into a file
For the following code, if we catch a error, how do I do so that the error information('Inconsistent data in iteration %s, skipp...

9 years ago | 1 answer | 0

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Question

Count another directory subfolder
Now I am in a script under "C:\User\Jason\MATLAB". In this script, I want to count how many subfolder in another directory 'C:\U...

9 years ago | 1 answer | 0

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Question

How to skip error and continue to execute the code
I have a for loop, but when I faced the following error, my script will stop executing. How can I do to skip the error and conti...

9 years ago | 2 answers | 0

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Solved

The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

9 years ago

Question

Whether ADD SEMICOLON for output will reduce execution time?
If my code compute data for 1 day. If I ADD SEMICOLON after the statements, means nothing display in Command Windows, does this ...

9 years ago | 1 answer | 0

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Question

Copy file to a new folder
Under a folder, I have a lot of .mat. "19800101.mat", "19800102.mat", ......."19800201.mat", "19800202.mat", ......"19801201.mat...

9 years ago | 3 answers | 0

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Question

Write 10 excel for loop
Now I have one original.xlsx, I want to write Data in Sheet1 from E1. xlswrite('Original.xlsx',Data,'Sheet1','E1') How d...

10 years ago | 2 answers | 0

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Question

Reduce computing time of these code
The following code takes 98.5% computing time of a script. Is there any code can be rewritten to improve time efficiency? [...

10 years ago | 0 answers | 0

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answers

Question

How to count how many sub folders under a folder
In a folder, there are many sub folder, how do we count how many sub folder they are?

10 years ago | 2 answers | 0

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Solved

Summing digits
Given n, find the sum of the digits that make up 2^n. Example: Input n = 7 Output b = 11 since 2^7 = 128, and 1 + ...

10 years ago

Solved

Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

10 years ago

Solved

Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

10 years ago

Solved

Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

10 years ago

Solved

Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

10 years ago

Solved

Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

10 years ago

Solved

Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

10 years ago

Solved

Remove the vowels
Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

10 years ago

Solved

inner product of two vectors
inner product of two vectors

10 years ago

Solved

Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

10 years ago

Solved

Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

10 years ago

Solved

Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

10 years ago

Solved

Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

10 years ago

Solved

Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

10 years ago