Community Profile # ahmed nebli

Last seen: 2 years ago Active since 2018

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Need help with storing live data from sensors into array
what you need to do is create a vector/matri without defining its size first (e.g.: A=[]; ) then use the command vertcat. see h...

3 years ago | 0

Best sorting algorithm for large array
I suggest you just use the command sort, see this link: https://www.mathworks.com/help/matlab/ref/sort.html

3 years ago | 0

importdata not reading date and time columns

3 years ago | 0

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Remove repeat values in a text file
i suggest you need to write an if condition on the minute vector exemple : if minute(n-1) == minute(n) then you delete the row n...

3 years ago | 0

Plotting "live" data inside while loop?
i suggest you try using the function set like in the link bellow https://www.mathworks.com/help/matlab/ref/set.html

3 years ago | 0

How to split vector to seqences
u can use something like that: for i=1:8:24 var = x[i,1]; % here you need to do what store var in someplace else in order n...

3 years ago | 0

To create zeros according to the length
I don't think you can put numérical zeros ( 00000 will be 0 if so), therefore you need to write these zeros as a string. i sug...

3 years ago | 1

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Merge Matrices (365 matrix to 1)
i suggest you try using the fuction cat to create a multidimentional array like in this exemple https://www.mathworks.com/help/m...

3 years ago | 0

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I have a gps file to read, Can anyone help me with a code to read from txt?
You need to use the function fscanf but before that you need to open the file, i suggest you follow the exemple in this link htt...

3 years ago | 0

How do I plot this on MATLAB
you can run it in a for loop (each time incrementing the value of t) , store the values of v in a vector and plot the vector. ch...

3 years ago | 0

Removing NAN values from the table and deleting it.
use this : (isnan(X)) = [] % X is the table

3 years ago | 1

how do I Load multiple csv files to collate data???
try something like that i could work num_files = 5; for i = 1 : num_files lat = ncread(sprintf('rawdata0', i), 'lat'); ...

3 years ago | 0

how to do 5 fold cross-validation for regression problem?
u have to use cvpartition like this exapmple kf=5; c = cvpartition(size(data.label,1),'KFold',kf); u can find more infor...

3 years ago | 0

How to compare each four rows by each other?
i prpose this algorithm: u define a variable m=4, and n=1, n is the number of the row, each time u search for your diffrences b...

3 years ago | 0

How to find the best ratio of producers in an energy system
i think u may make a 3 nested loops in which each time you fix two variables and vary the 3 rd variable and each time u store th...

3 years ago | 0

How can i resolve this error?
u need to go back to wiener2 function and see how much variable u need, i think you forgot a variable

3 years ago | 0

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Importing a CSV with numbers and strings and blank space
u need to save the csv file as xls file and then use the function xlsread, it should work , use something like this: xlsread('...

3 years ago | 0

Hi. I want the plot with a marker symbol. I want to plot like this figure symbol(marker by red pen).

3 years ago | 0

editing large text file
this is how is suggest you can do : -import your file/-use a for loop to search for 'H' and after it a 'j' and after it a 'Y' / ...

3 years ago | 0

Combine variables in workspace into one table?

3 years ago | 0

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How to calculate mean frequency for mat signal
u can just import the frequencies, store all the frequencies in an array and then use the function mean like bellow https://...

3 years ago | 0

Mexing problem (gcc compiler version 4.9.x needed)
can u update the gcc, or try to find anothor tool for mexing files

3 years ago | 0

error: Too many output arguments
when writing the for loop it dosen't end with a ; and next the second for loop need to be under the first for loop and decaled ...

3 years ago | 0

Solved

What is Sum Of all elements of Matrix
Given the matrix x, return the sum of all elements of matrix. Example: Input x = [ 1 2 0 0 0 0 6 9 3 3 ] ...

3 years ago

Solved

Compute a dot product of two vectors x and y
x and y are input vectors, d is a number and contains their dot product

3 years ago

Solved

Square a Number
Given an input x, return y, which is equal to the square of x.

3 years ago

Solved

Test Problem; Create a 5x5 array containing all ones
This is a test for learning the process of creating a Cody problem. The goal of this test problem will be to create an array,...

3 years ago

Solved

Is my wife right?
Regardless of input, output the string 'yes'.

3 years ago