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What is my License number?
You should contact <https://www.mathworks.com/support/contact_us/index.html?s_tid=contact_us_support_cust_serv MathWorks Support...

environ 10 ans il y a | 0

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Does anyone know to convert clock time into decimal time?
# Use <https://www.mathworks.com/help/matlab/ref/num2str.html |num2str|> # Lop off the last two characters with |a(end-1:en...

environ 10 ans il y a | 0

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Who can help me with defining a regular expression?
str1 = '@5%'; str2 = '@2.5%'; regex = '\d*\.?\d+'; [s1 e1] = regexp(str1, regex); [s2 e2] = regexp(str2, regex); ...

environ 10 ans il y a | 0

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How to do a binarization of this image?
Take a look at <https://www.mathworks.com/help/images/image-enhancement-and-analysis.html this example> and <https://www.mathwor...

environ 10 ans il y a | 0

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*.dat file reader
<https://www.mathworks.com/help/matlab/ref/readtable.html |readtable()|> should do it. Take a look at |'HeaderLines'| if needed....

environ 10 ans il y a | 0

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how can i recrord a video from webcam using matlab ?
You can use the <https://www.mathworks.com/products/imaq/features.html#app-for-image-and-video-acquisition Image Acquisition Too...

environ 10 ans il y a | 0

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Plot data from 2 different files in the same folder
It doesn't matter what files the data is in. You need to load the data and run the associated plotting commands.

environ 10 ans il y a | 0

| A accepté

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Hi, i need to find out the eigenvalues of a 8000x8000 matrix system by eig() function of matlab?? may i know the normal simulation time of the eig() function of such a huge matrix in MATLAB?
It's going to depend on the matrix, correct? Running a simulation on my machine (Surface Pro3) I was able to modify the examp...

environ 10 ans il y a | 0

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How to find multiple min values and index them for a FOR loop
The first thing I would do is find what the minimum value is. You can do this by using the <https://www.mathworks.com/help/matla...

environ 10 ans il y a | 0

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Re: find()
From what I can tell in the <https://www.mathworks.com/help/matlab/ref/find.html#budqvnh-1 |find|> documentation the answer is y...

environ 10 ans il y a | 0

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How to convert xml to excel sheet...?
Use <http://www.mathworks.com/help/matlab/import_export/importing-xml-documents.html |xmlread|> to import your data and <http://...

environ 10 ans il y a | 0

A résolu


Who is the smartest MATLAB programmer?
Who is the smartest MATLAB programmer? Examples: Input x = 'Is it Obama?' Output = 'Me!' Input x = 'Who ?' Ou...

environ 10 ans il y a

A résolu


Get the length of a given vector
Given a vector x, the output y should equal the length of x.

environ 10 ans il y a

A résolu


Return the first and last character of a string
Return the first and last character of a string, concatenated together. If there is only one character in the string, the functi...

environ 10 ans il y a

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download data from a web page
Use <http://www.mathworks.com/help/matlab/ref/webread.html webread>

environ 10 ans il y a | 0

| A accepté

A résolu


Is this triangle right-angled?
Given any three positive numbers a, b, c, return true if the triangle with sides a, b and c is right-angled. Otherwise, return f...

environ 10 ans il y a

A résolu


Area of an equilateral triangle
Calculate the area of an equilateral triangle of side x. <<http://upload.wikimedia.org/wikipedia/commons/e/e0/Equilateral-tr...

environ 10 ans il y a

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Area of an Isoceles Triangle
An isosceles triangle has equal sides of length x and a base of length y. Find the area, A, of the triangle. <<http://upload...

environ 10 ans il y a

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Length of a short side
Calculate the length of the short side, a, of a right-angled triangle with hypotenuse of length c, and other short side of lengt...

environ 10 ans il y a

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Back to basics 8 - Matrix Diagonals
Covering some basic topics I haven't seen elsewhere on Cody. Given an input vector of numbers, output a square array with the...

environ 10 ans il y a

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Trimming Spaces
Given a string, remove all leading and trailing spaces (where space is defined as ASCII 32). Input a = ' singular value deco...

environ 10 ans il y a

A résolu


Too mean-spirited
Find the mean of each consecutive pair of numbers in the input row vector. For example, x=[1 2 3] ----> y = [1.5 2.5] x=[1...

environ 10 ans il y a

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Back to basics 6 - Column Vector
Covering some basic topics I haven't seen elsewhere on Cody. Given an input vector, output true or false whether it is a colu...

environ 10 ans il y a

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Write a function (Not a built-in function) that converts a given number n in base 2 to base 10
There's a builtin function called bin2dec which turns a binary string into a decimal number. So if you convert the data into a s...

environ 10 ans il y a | 0

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How to set different colors for the text in a legend ?
Use TeX formatting to set the colors. x = -pi:pi/20:pi; y1 = sin(x); y2 = cos(x); plot(x,y1,'-ro',x,y2,'-.b'); ...

environ 10 ans il y a | 4

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Writing a result on an existing table?
Are you using matrices or tables? It's not completely clear to me in your post. If it's a matrix you can do the calculation and...

environ 10 ans il y a | 0

| A accepté

A résolu


inner product of two vectors
inner product of two vectors

environ 10 ans il y a

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How to read\open a csv file with millions of rows and hundreds of coloumns to compare/delete and save
You can do this with <https://www.mathworks.com/help/matlab/ref/textscan.html textscan>, but your <https://www.mathworks.com/hel...

environ 10 ans il y a | 0

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How can i Delete columns from many csv files?
You can use <https://www.mathworks.com/help/matlab/import_export/what-is-a-datastore.html datastore()> to read the files and the...

environ 10 ans il y a | 0

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Hi, how can i import data from many worksheet in Excel? Can i used a cicle for?please help me
You're trying to use i as your loop index. (Conventionally ii would be used to avoid confusion with <https://www.mathworks.com/h...

environ 10 ans il y a | 0

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