Answered
How to convert time to a number?
use following code to get values as string array. time=input(prompt,'s'); split the output 'time' using split function with de...

5 years ago | 0

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...

5 years ago

Question

why 'colormap' did not change the color of my plots?
example: figure, plot(rand(5)) colormap hot above code did not change the color of plot.

5 years ago | 2 answers | 0

2

answers

Answered
Extracting Slices From Slice Function
use the vector slicing to get one slice, Let V is the input volume. e.g S=V(:,:,1); use 'imshow' or 'imagesc' functions to vie...

5 years ago | 0

| accepted

Answered
Help with Loops and Switch cases and Mean
here is the code Q=input('Would you like to enter a real number? (Yes or No) ','s'); n=[]; switch Q case 'Yes' ...

5 years ago | 1

| accepted

Answered
How to shift a matrix
loop version: M=[ 1,2,3; 4,5,6; 7,8,9; ]; C=nan(3,4); for i=1:size(M,1) if mod(i,2)==1 C(i,2:end)=M...

5 years ago | 1

| accepted

Answered
How to upload csv. files from multiple folders
to automate the file and folder access operations, do not use 'uigetfile' or 'uigetdir' functions. use 'dir' function to get th...

5 years ago | 0

Answered
How to access data from a struct when the dot notated reference is passed as a char array?
To to get the field names of struct array, use 'fieldnames' function S.x=1; S.y=2; fields = fieldnames(S) then, to get the...

5 years ago | 0

Answered
Question about import a .txt file into matlab
you can use 'fopen' and 'fread' functions. https://www.mathworks.com/help/matlab/ref/fread.html

5 years ago | 0

Answered
wirte in excel sheet.
Delete the already created excel sheet. Change the last line of code to xlswrite('Book1.xlsx',q,'A1:BI1') if you want to stor...

5 years ago | 0

Answered
Problem with data saving in a for loop
Best solution is: store the output variable 'vector' fom each iteration, into another variable(array, cell array). then at the ...

5 years ago | 1

Answered
Problem with data saving in a for loop
you have to put the 'xlswrite' functions inside the for loop. also, for each iteration, change the sheet number or the 'xlRange...

5 years ago | 1

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Answered
Create lookup table for cell array
Code example to convert cell array to table. A={1,2,3} B=array2table(A');

5 years ago | 0

Answered
I need to make a square wave
see: https://in.mathworks.com/help/signal/examples/signal-smoothing.html https://in.mathworks.com/matlabcentral/answers/3205...

5 years ago | 0

Answered
sir,i would like to implement pso (particle swarm optimization)in speech could you please help
particle swarm optimization code https://in.mathworks.com/matlabcentral/fileexchange/52857-particle-swarm-optimization-pso you...

5 years ago | 0

Answered
Creating shapes in binary images
you can insert a shape in a image using the function 'insertShape'. e.g. RGB = insertShape(I,shape,position);

5 years ago | 0

Answered
Hovering mouse over a variable suddenly doesn't show present value in R2015b?
I got this issue in matlab 2018a. I found that one of my variable name is 'eval'. 'eval' is an inbuild function name, so i chang...

6 years ago | 3

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...

6 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 ...

6 years ago

Answered
join close lines in one thicker
why matlab did not have functions to draw and burn basic shapes (line, triange,..) in image.i did not find any file exchange als...

6 years ago | 0

Channel

test channel
test data

6 years ago

Solved

Getting logical indexes
This is a basic MATLAB operation. It is for instructional purposes. --- Logical indexing works like this. thresh = 4...

6 years ago

Solved

Area of a circle
Given the radius x, y would be the area of a circle. Pi = 3.1416

6 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...

6 years ago

Solved

Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

6 years ago

Solved

Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

6 years ago

Solved

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

6 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...

6 years ago

Solved

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

6 years ago

Solved

Who Has the Most Change?
You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

6 years ago