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George

MathWorks

Last seen: meer dan een jaar ago Active since 2014

I've worked at MathWorks since 2013. Using MATLAB isn't part of my job, but I enjoy learning about it.

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dotenv-for-MATLAB
Load environment variables from a .env file.

8 maanden ago | 4 downloads |

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Magic is simple (for beginners)
Determine for a magic square of order n, the magic sum m. For example m=15 for a magic square of order 3.

bijna 3 jaar ago

Solved


Make a random, non-repeating vector.
This is a basic MATLAB operation. It is for instructional purposes. --- If you want to get a random permutation of integer...

bijna 3 jaar ago

Solved


Generate a vector like 1,2,2,3,3,3,4,4,4,4
Generate a vector like 1,2,2,3,3,3,4,4,4,4 So if n = 3, then return [1 2 2 3 3 3] And if n = 5, then return [1 2 2...

bijna 3 jaar ago

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Number of 1s in a binary string
Find the number of 1s in the given binary string. Example. If the input string is '1100101', the output is 4. If the input stri...

bijna 3 jaar ago

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Getting the indices from a vector
This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to <http://www.mathworks....

bijna 3 jaar ago

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Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

bijna 3 jaar ago

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Return area of square
Side of square=input=a Area=output=b

bijna 3 jaar ago

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Return unique values without sorting
If the input vector A is [42 1 1], the output value B must be the unique values [42 1] The *values of B are in the s...

meer dan 7 jaar ago

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Generate N equally spaced intervals between -L and L
Given N and L, return a list of numbers (in ascending order) that divides the interval [-L L] into N equal-length segments. F...

meer dan 7 jaar ago

Solved


Set the array elements whose value is 13 to 0
Input A either an array or a vector (which can be empty) Output B will be the same size as A . All elements of A equal to 13...

meer dan 7 jaar ago

Answered
How can I create a cell array by combining arrays?
What are you having trouble with? The code you posted works. >> cellArray={['X','Y','Z'],[1 2 3],[4 5 6],[7 8 9]} c...

meer dan 7 jaar ago | 1

Answered
Using save with -v7.3 takes a long time and the mat file size is enormous
I've run into this before too. From the <https://www.mathworks.com/help/matlab/import_export/mat-file-versions.html matfile> pag...

meer dan 7 jaar ago | 0

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Answered
How do I get Matlab to recognise a text file as numerical values when importing it ?
Check out the <https://www.mathworks.com/help/matlab/ref/textscan.html#inputarg_formatSpec |formatSpec|> portion of the textscan...

meer dan 7 jaar ago | 0

Answered
how to get the specific member data from a struct array?
From the doc on <https://www.mathworks.com/help/matlab/ref/struct.html |struct|> "When you access a field of a nonscalar stru...

meer dan 7 jaar ago | 0

| accepted

Answered
predict data for input
Have you tried <https://www.mathworks.com/help/stats/compactclassificationdiscriminant.predict.html |predict()|>? results =...

meer dan 7 jaar ago | 0

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I'm trying to create a loop in which i can extract 4 columns and multiple rows from 18 difference txt files and save the extracted data in one file. Is this possible? This is my code from one file
Untested, but this should basically work. Get an array of filenames with <https://www.mathworks.com/help/matlab/ref/ls.html?s_ti...

meer dan 7 jaar ago | 0

Answered
How can I make a random array with values of either -1 or 1?
You can use rand % pseudo code x = rand(50,1); pos = x >= .5; neg = x < .5; x(pos) = 1; x(neg) = -1; ...

meer dan 7 jaar ago | 0

Answered
I'm doing iteration of credit card. In it, there are looping of month ,balance, and pay every month . How to plot graph with these three variable as the value changes everytime looping happen . Thanks
Don't try and plot it everytime it changes. Store the elements in vectors and plot those at the end.

meer dan 7 jaar ago | 0

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Elapsed Time
Given two date strings d1 and d2 of the form yyyy/mm/dd HH:MM:SS (assume hours HH is in 24 hour mode), determine how much time, ...

meer dan 7 jaar ago

Solved


Binary numbers
Given a positive, scalar integer n, create a (2^n)-by-n double-precision matrix containing the binary numbers from 0 through 2^n...

meer dan 7 jaar ago

Answered
How to remove corrupted data lines from text file
Add a NameValue pair of <https://www.mathworks.com/help/matlab/ref/textscan.html#namevaluepairs CommentStyle>. e.g., C = t...

meer dan 7 jaar ago | 0

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Counting Money
Add the numbers given in the cell array of strings. The strings represent amounts of money using this notation: $99,999.99. E...

meer dan 7 jaar ago

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Sums with Excluded Digits
Add all the integers from 1 to n in which the digit m does not appear. m will always be a single digit integer from 0 to 9. no...

meer dan 7 jaar ago

Solved


Multielement indexing of a row array
The row array birthRateChina stores the China birth rate (per 1000 people) for years 2000 to 2012. Write a statement that create...

meer dan 7 jaar ago

Answered
How to set names to column vectors?
If you want to associate a variable name with a piece of data I think your best bet is to use a <https://www.mathworks.com/help/...

meer dan 7 jaar ago | 1

| accepted

Solved


Replace NaNs with the number that appears to its left in the row.
Replace NaNs with the number that appears to its left in the row. If there are more than one consecutive NaNs, they should all ...

meer dan 7 jaar ago

Answered
How to speed up a for loop ?
Are you sure this is correct? angle=asin(A(:,3))/(sqrt(A(:,3).^2+A(:,2).^2+A(:,1).^2)); That's doing matrix division. In...

meer dan 7 jaar ago | 2

| accepted

Answered
How to find which column consists character 'example' in cell c{1,2}(:,1)
strcmp(c{1,2}(:,1), 'example') will return a logical array. You may need to surround 'example' with |cellstr()|, I can't re...

meer dan 7 jaar ago | 0

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