KSSV

Last seen: Today | 2011 以来アクティブ

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https://sites.google.com/site/kolukulasivasrinivas/ Professional Interests: Mathematical Computing

Programming Languages:
Python, MATLAB, Fortran
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English, Hindi, Telugu

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How would I detect gray/white pixels in a picture?
REad about find. Gve the pixle value as zero and use find. This will give you the indices. [y,x] = find(I==0) ; % I is gray i...

1日前 | 0

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Average data to every 1, 2, 5, 12 hrs.
Read about retime

1日前 | 0

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scatteredInterpolant function is providing too much noise in interpolation
Read about griddata. Also explores the methods in these interpolations. Go for the method nearest.

3日前 | 0

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Ploting or seeing 3/4D Weather Data NC4 file in MATLAB
pcolor can be worked on only a matrix. You var3 is a 3D matrix. pcolor(var1,var2,var3(:,:,i)) ; % where i = 1,2,.....744 Also...

3日前 | 0

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how to crop a size of 25x20 from a image if centre coordinates are known
Let (x,y) be your center pixl locations. iwant = imcrop(I,[x-10 y-10 20 20]) ;

4日前 | 0

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How to plote the stress for each element in the mesh with a color map.
Refer this: https://in.mathworks.com/matlabcentral/fileexchange/32719-postprocessing-in-fem

6日前 | 0

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How to plot this type of function?
t = linspace(-5,5) ; x = exp(t) ; y = 1-exp(-t) ; z = atan2(y,x) ; plot(t,z)

6日前 | 0

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different outputs for same input in every run
%%%%%%%%% rng(1) find_kmeans=kmeans(data(:,1),2); data_2=table(data(:,1),find_kmeans(:)); data_2.Properties.VariableNa...

6日前 | 0

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Need help in plotting current and conductance
You need to initialize the arrays before loop for speed and to store the values into an array. NOTE: Check the last values of ...

7日前 | 1

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choose the limit of two y axes
x = linspace(0,25); y = sin(x/2); yyaxis left ; plot(x,y,'k'); ax(1) = gca ; r = x.^2/2; yyaxis right plot(x,r); ax(2)...

7日前 | 1

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Can somebody assist me with the Mathlab source code to plot 9x9 grids and place sensors in each grid?
x = 1:9 ; y = 1:9 ; [X,Y] = meshgrid(x,y) ; figure hold on plot(X,Y,'r',X',Y','r',X,Y,'.k')

7日前 | 0

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How do I insert a 1x1 cell array consisting of one vector into a table?
coordinates = [2,2,2,2,2]'; % single row vector T = table(coordinates)

7日前 | 0

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locally weighted least square regresion
t = linspace(0,2*pi) ; y = sin(t) ; p = polyfit(t,y,3) ; xi = linspace(t(1),t(end)) ; yi = polyval(p,xi) ; plot(t,y,'r',xi,...

7日前 | 0

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if condition picking certain day of week
thedates = (datetime(2022,01,1):datetime(2022,1,31))'; d = day(thedates,'name') ; idx = ismember(d,{'Monday','Thursday'}) ; d...

7日前 | 1

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Randomly shuffle folder of images and save it
imgFiles = dir('*.jpg') ; N = length(imgFiles) ; n = randsample(1:10,N) ; % you can out your limits here for i = N I...

7日前 | 1

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switch case not recognizing input
user_input=input('Enter the mineral name: ') ; switch user_input case 'magnetite' fprintf('Mineral:Magnetite \n ...

7日前 | 0

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How to concatenate multiple .mat files and generate a 3D matrix?
matFiles = dir('*.mat') ; N = length(matFiles) ; iwant = zeros(3048,43,N) ; for i = 1:N S = matfile(matFiles(i).name) ...

7日前 | 0

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without writing any data, I want to create blank excel file.
T = table ; % create empty table fname = 'test.xlsx' ; % here you can give path as well writetable(T,fname) ; % create ...

7日前 | 0

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Read multiple excel files
xlFiles = dir('*.xlsx') ; N = length(xlFiles) ; for i = 1:N thisFile = xlFiles(i).name ; T = readtable(thisFile) ; ...

8日前 | 0

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3D plot of Latitude, Longitude and Depth while the colour of the points represent earthquake magnitude
scatter3(long,lat,Depth,[],Depth,'filled')

8日前 | 0

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Computing the determinant of a block matrix
A = rand(2) ; B = rand(2) ; C = rand(2) ; D = rand(2) ; M = [A B; C D] ; det(M) det(A)*det(D-C*inv(A)*B) In your case, D...

9日前 | 1

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find elemets of matrix based on logical conditions
points=readtable('points.txt'); points=table2array(points); x_p=points(:,1); y_p=points(:,2); z_p=points(:,3); t_p=points...

9日前 | 0

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Find Gaussian fitting of image data set
Read about pdist.

9日前 | 0

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Fitting bimodal wind data using Weibull mixture in matlab
REad about fitdist

12日前 | 0

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write data into a file line by line inside foef(fid) loop
I would first read the complete file and then run loop for each line. T = readtable('https://in.mathworks.com/matlabcentral/an...

13日前 | 0

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How to use string with different sizes as a text in figure?
str1 = 'I' ; str2 = 'Love' ; str3 = 'MATLAB' ; str = sprintf('%s\n%s\n%s',str1,str2,str3); [X,Y,Z] = peaks(50) ; pcolor(X...

13日前 | 0

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Precipitation plot for a specific time
If you want it for all latitudes at a given time, then you have to fix one longitude. You can extract at a given time, at a fixe...

13日前 | 0

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Saving the average in each iteration of a for loop
T = readtable(myfile) ; data = table2array(T) ; avgthic = mean(data,2,'omitnan')

13日前 | 0

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how to plot k-means output
Read about gscatter

13日前 | 0

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Draw multiple circles in one image
R = 2:2:10 ; th = linspace(0,2*pi) ; figure hold on for i = 1:length(R) x = R(i)*cos(th) ; y = R(i)*sin(th) ; ...

13日前 | 0

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