Answered
how to assign a variable using a string
Try (genvarname) with (eval) functions. Example (alter the example below to your use, i.e., instead of eval([b]) use eval([b = '...

11 years ago | 0

Answered
Making a magic square matrix singular
I don't think details are required since A=magic(n)-ones(n)*((1+n*n)/2) is changed into an antisymmetric matrix, any such...

11 years ago | 1

| accepted

Answered
Please help me implement the equations: Pij = (f(i,j))/(∑_(i=1)^M∑_(j=1)^N〖f(i,j)〗) and H = ─∑_(i=1)^M∑_(j=1)^NPijlog2Pij
It would be something like (provide your own functions for f, and set up the values of M and N), clc;clear;close; % set u...

11 years ago | 0

| accepted

Answered
How to calculate the determinant of a symbolic matrix 5x5
I don't think it is possible to concatenate a matrix such as K if A-F have sizes > (1,1), thus no value of the determinant exist...

11 years ago | 0

| accepted

Answered
How do I assign a matrix column as my x or y values so that can plot them?
Use the basic matrix notation, the colon operator is very helpful in such cases. Example: y=magic(5) y = 17 ...

11 years ago | 1

Answered
Plotting Legends of Rows of a Matrix ???
A=[1 2 3 4; 1 2 3 5; 2 3 4 5]; plot(A) C=num2str(A); H=legend(C); set(H,'Interpreter','none');

11 years ago | 0

Answered
background suppression from any real time image
I've tried (Embedded Matlab Function) blocks once for a similar thing, and used my own program to handle the output.

11 years ago | 0

Answered
Why does the function real return expressions containing i ?
Check the math, e.g.: ... TheEq=w*1i*eye(n)-A-B1*e1-B2*e2- B3*(cos(tau3*w)-1i*sin(tau3*w))-B4*cos(tau4*w)-1i*sin(tau4...

11 years ago | 0

Answered
How do i interpolate a large matrix of data thats not in ascending order?
There are few interpolation techniques in Matlab. You can start with the functions interp1q % for simple 1-D interpolation...

11 years ago | 0

| accepted

Answered
Can rectangularized data be achieved by modifying a text file with MATLAB?
Hi Brad. Instead of InputText=textscan(fid,'%s',1,'delimiter','\n'); Try this out [InputText, dn1]=fscanf(fid,'...

11 years ago | 0

| accepted

Answered
Make error when using a embedded matlab function
Probably there is a simulink model with the same name. Try to use a slightly different function name for youe swap function such...

11 years ago | 0

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...

11 years ago

Answered
Check each pixel for a specific color
Try I=imread('imageHere'); [a,b,c]=size(I); % change is needed for i=1:a for j=1:b F(i,j)=all(I(i,j)==0); e...

11 years ago | 0

Answered
how to resize a given signal?
Use reshape Y=function(X,m,n) It works for any input matrix (X) with number of elements (m x n). The output is Y with m...

11 years ago | 0

Answered
large text file reading
Try this and note to specify your filename input (FIN) and filename output (FOUT) properly, i.e., FOUT must be with extension (...

11 years ago | 0

Answered
How to convert a string to a symbol ?
@Jacky (the actual expression is : (x>=1 & x<9)). This is the question! This is a logical comparison statement. The meaning...

11 years ago | 1

| accepted

Submitted

immovieFolder.m
IMMOVIEFOLDER records a movie from a group of image files in a specified folder, and plays it.

11 years ago | 1 download |

Answered
How to convert a string to a symbol ?
sym and syms are used to declare symbolic variables, see: <http://www.mathworks.com/help/symbolic/symbolic-variables-express...

11 years ago | 1

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...

11 years ago

Solved

Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

11 years ago

Solved

Swap the input arguments
Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...

11 years ago

Answered
can someone explain to me what is this entire code means?
This code finds log10 of the values of some vector (x). The line: y = -Inf*ones(size(x)); is meaningless in this part o...

11 years ago | 0

Submitted

folderFiles.m
Reads filename contents of a folder.

11 years ago | 2 downloads |

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...

11 years ago

Solved

Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

11 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...

11 years ago

Solved

Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

11 years ago

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

11 years ago

Solved

Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

11 years ago

Solved

Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

11 years ago