已回答
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 前 | 0

已解决

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 前

提问

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 前 | 2 个回答 | 0

2

个回答

已回答
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 前 | 0

| 已接受

已回答
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 前 | 1

| 已接受

已回答
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 前 | 1

| 已接受

已回答
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 前 | 0

已回答
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 前 | 0

已回答
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 前 | 0

已回答
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 前 | 0

已回答
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 前 | 1

已回答
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 前 | 1

| 已接受

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

5 years 前 | 0

已回答
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 前 | 0

已回答
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 前 | 0

已回答
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 前 | 0

已回答
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...

5 years 前 | 3

已解决

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 前

已解决

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 前

已回答
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 前 | 0

频道

test channel
test data

6 years 前

已解决

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

6 years 前

已解决

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

6 years 前

已解决

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 前

已解决

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 前

已解决

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 前

已解决

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

6 years 前

已解决

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 前

已解决

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

6 years 前

已解决

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 前