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# prasanth s

##### Last seen: 9 days ago
54 total contributions since 2018

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piratepal colors for plots
New colormap for plots (from piratepal function in R)

Submitted

Cyclic cellular automaton simple
cyclic cellular automaton implementation as from the website https://codepen.io/jlfwong/pen/YWZoyk

How Can I create struct field in a loop?
'struct' command creates new structure. you have to create new structure at the starting of loop. add new fields to the structur...

4 months ago | 0

| accepted

Specific change points in large dataset
Here is one of the methods using 'diff' function. use following code to get all the difference values and plot those values to...

7 months ago | 0

read multiple csv files from different subfolders
Use 'dir' function to get the directory and file list of any folder. e.g D=dir('Raw data'); output 'D' is an structure array c...

7 months ago | 0

Thanks for detailed data

8 months ago | 0

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...

8 months 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...

8 months 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.

8 months ago | 2 answers | 0

### 2

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...

8 months ago | 0

| accepted

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' ...

8 months ago | 1

| accepted

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...

8 months ago | 1

| accepted

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...

8 months ago | 0

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...

8 months ago | 0

Question about import a .txt file into matlab

8 months ago | 0

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...

8 months ago | 0

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 ...

8 months ago | 1

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...

8 months ago | 1

| accepted

Loop iteration filling an array
you have used semicolom at the middle of 'AAA = [SETT,[NEXTse(1 ........' code. so may be the size did not matching. try usin...

8 months ago | 0

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

8 months ago | 0

I need to make a square wave

8 months ago | 0

Write down the MATLAB commands for each of the following tasks.
solving equations: https://in.mathworks.com/help/symbolic/solve.html

8 months ago | 0

particle swarm optimization code https://in.mathworks.com/matlabcentral/fileexchange/52857-particle-swarm-optimization-pso you...

9 months ago | 0

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

10 months ago | 0

To use Totrolet Transform what inbuilt function and parameters to be used in matlab

10 months ago | 0

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...

1 year ago | 2

Detect the changes in two images
you can extract the region level features such as SIFT, hog descriptors from each image and compare. Or, detect object regions u...

1 year ago | 0

how can detect objects from images?
some object detection methods Viola-Jones Algorithm for object and face detection hog descriptors for pedestrian detection ...

1 year ago | 0

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...

1 year 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 ...

1 year ago