prasanth s

Last seen: 12 months ago | Active since 2018

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Droplet size calculation of a spray image
using 'kmeans' for segmentation and 'regionprops' to get properties of particles, image=imread('particle.jpg'); jqimage=rgb2...

1 year ago | 0

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Comparing an occurance of colors between 2 images
convert the images to HSV colorspace and use the hue component to clustering. match the colors using the obtained cluster cente...

1 year ago | 0

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Can anyone explain me how to read ecg .dat, .hea, .atr files ?
check ecg-kit https://physionet.org/content/ecgkit/1.0/common/

1 year ago | 0

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Can someone help me with the square wave plot here?
T=12; N=3; D=25; A=3; t= 0:0.001:1; x = A*((1+square(2*pi*N*t,D))/2); t2=t*T*N; plot(t2, x);

1 year ago | 1

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How to export data used to make MATLAB figure?
fig=openfig('SophiesFigure_nanodomains.fig'); data1=fig.Parent.Children(2).CurrentAxes.Children.YData %histogram xdata=ww.Cu...

1 year ago | 0

Answered
loops and conditional statements in Matlab for data filtration
A=[1 3 4 2 3 -9 4 -7 8 6 7 -1 2 3 4 6 19 7 12 3 -4 -5 6 7 8 2 3 5 2 3 4 ]'; A(A<0)=0; A(A>10)=0;

1 year ago | 0

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How to extract value from a matrix with given indices
code example is ind = sub2ind(size(matrix),index,1:5); new=matrix(ind)

1 year ago | 1

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implay a video and draw n points with ginput
try: h=implay(video) [x,y] = getpts(h.Visual.Axes)

1 year ago | 0

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How to match array data and excel data?
if all data type is in array type, the matching row positions can be obtained using rows=all(B==I,2) contents from 'A' obtain...

1 year ago | 0

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how to convert hours and minutes from decimals to datetime objects
First convert it into string type with the format "yyyy-MM-dd hh-mm" using hours_decimal=15.9 myDate=string("2008-05-07 ")+str...

1 year ago | 0

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Anyway to Pre-allocate Memory for Struct
s=struct; s(1).Name=0 s(2).Name=0

1 year ago | 0

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how to find the length of the foot automatically from the image
refer https://in.mathworks.com/help/images/image-segmentation.html https://in.mathworks.com/help/images/ref/regionprops.html...

1 year ago | 0

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Select specific area of a DICOM file
remove noise using median filter IM=medfilt2(P); find gradient [Gmag,Gdir] = imgradient(IM); then apply circle detection or ...

1 year ago | 0

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GAN examples for Neural Network/Deep Learning Toolbox of R2018b or earlier?
you can find some in github. https://github.com/jonzhaocn/GAN-Base-on-Matlab

4 years ago | 0

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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 years ago | 0

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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...

4 years ago | 0

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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...

4 years ago | 0

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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...

4 years ago | 0

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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.

4 years ago | 2 answers | 0

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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...

4 years ago | 0

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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' ...

4 years ago | 1

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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...

4 years ago | 1

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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...

4 years ago | 0

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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...

4 years ago | 0

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

4 years ago | 0

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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...

4 years ago | 0

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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 ...

4 years ago | 1

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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...

4 years ago | 1

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

4 years ago | 0

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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...

4 years ago | 0

prasanth s

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