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KSSV


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6,452 total contributions since 2011

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

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Answered
Anonymous function outputs to table
q = 0:0.01:0.25 ; doublingtime = @(q) log(2)./log(1+q); dt = doublingtime(q); T = table(q,dt)

1 day ago | 1

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Answered
i need to convert below batrix to another matrix
b=[308 -1 2 3 -1 2 -1; -1 -1 2 1 0 1 0; 1 2 -1 -1 -1 -1 2; 0 0 1 -1 -1 2 -1]; % Get positive co...

4 days ago | 0

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Answered
Finding closest coordinates and rearranging order to match
Read about knnsearch. This is your function for today.

4 days ago | 0

Answered
use matlab to plot fft from excel sheet
It looks like there is no variable name A2 in the table. Try using: T.(1), T.(2) etc...or check the variablenames by printing...

4 days ago | 0

Answered
How to divide an image into different shapes?
doc imcrop doc impoly doc imfreehand YOu can also define your locations in the shape you want......use inpoly and pick only i...

4 days ago | 0

Answered
How can we read specific rows from an excel file in matlab?
Read about readtable. T = readtable(filename) ; YOu can access the columns using T.(1), T.(2) or T.(alpha), T.(beta), etc. ...

4 days ago | 0

Answered
Help with inverse logarithm
Read about element by element operations in matlab. % Solve for life using SWT equations for a, b, and c. Sa = 220; % Stres...

4 days ago | 0

Answered
Making a Function with output only, no input
Run / call the function by typing as below in the command window. [x,y] = getData() ;

4 days ago | 0

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Answered
How can I turn vector to scalar?
x = 10:10:70 ; % this will generate [10,20,..70] ; sumx = sum(x) ; % this will give you sum of array Also you can call eac...

4 days ago | 0

Answered
Reassigning values in a matrix
Read about max toget the maximum value in the array. Read about inequalitites >and < to get the other task solved. Read abou...

2 months ago | 0

Answered
How to normalize two waves on a single plot
t=0:0.001:0.05; y= 11.18*cos(60*pi*t+26.565); y2= -60*pi*11.18*sin(60*pi*t+26.565); title('Phasor Waveforms') y=y/max(y) ;...

2 months ago | 0

Answered
How to find intersection of 2 non-equally sized arrays in matlab
Use interX from here: https://in.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections?focused=5165138&tab=function...

2 months ago | 0

Answered
How to create multiple cdfplot in one graph?
figure hold on lgd = cell(size(NPV_all,2),1) ; for ki = 1:size(NPV_all,2) cdfplot(NPV_all(:,ki)); lgd{ki} = strca...

2 months ago | 0

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Answered
How can I use "eig" in symbolic variables?
syms a b l A=[2*a+3*b ,2*b+3*a ; a+b,a-b] ; B=[5*a+8*b, b^2+5 ; a-5*b,2*b+3*a] ; C = A-l^2*B ; eqn= det(C)==0 ; iwant = s...

2 months ago | 0

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Answered
Fitting the data so that one a single continuous line is achived
I = imread('Annotation 2019-09-04 112619.png') ; I1 = imcrop(I) ; % crop to remove white borders present around the image I1...

2 months ago | 0

Answered
How Can I put some numbers in a sym and sum its cells?
syms a b c d B = [ 1 2 ; 3 4] ; x = B(:,1) ; y = B(:,2) ; A = [ a*(x(1)^2)+y(1) , b*(y(1)^3)+x(1) ; d*(x(2)^2)*y(2) ,...

2 months ago | 0

Answered
storing function outputs from a nested for loop
maxDisp_x=cell(Nrt,lhsN,NGM); for scenario=1:Nsnro for i=1:Nrt ....... for j=1:lhsN ......

2 months ago | 0

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Answered
find t and Use a graphical method to locate the initial estimate
syms t ; v = 4.8626; w = 4.4721; x=0.17; f = x - t*v*exp(-w*t)==0 ; s = double(solve(f)) ;

2 months ago | 0

Answered
Bug in matrix indexing?
USe this: test = 1.0e+03 *[1.1506 -0.0094 -0.0043 -0.0012 -0.0001 -0.0007 0.0003 0.0004 -0.0082 0.0...

2 months ago | 0

Answered
Difference and probability in plot
thedifference=-5:1:5 ; N = length(thedifference) ; probability=zeros(N,1) ; for i = 1:N thediff = thedifference(i) ;...

2 months ago | 0

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Answered
A statement under "for" gets skipped during the last loop
YOu are changing the loop index ii inside the if...else statements.......that is now allowed... function coded = caesar (v,s) ...

2 months ago | 0

Answered
I want to load multiple text files into variable cell array
files = dir('*.txt') ; N = length(files) ; iwant = cell(N,1) ; for i = 1:N filename = files(i).name ; startRow ...

3 months ago | 1

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Answered
How can we make a rhombus in the middle?
Play with the points in R....you give the vertices of vertices..you will get it. fr=zeros(512,512); % Rhombus points R = ...

3 months ago | 0

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Answered
linear interpolation without meshgrid
Read this: https://in.mathworks.com/help/matlab/ref/scatteredinterpolant.html

3 months ago | 0

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Answered
How can I put two noises in an image?
How about imshow((tp+k)/2)

3 months ago | 0

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Answered
How can I place a quiver plot on top of a triangular surface (trisurf) plot?
USe 2D plot: patch('faces',tri(:,2:4),'vertices',[Xp' Yp'],'facevertexcdata',z','facecolor','interp','edgecolor','none') ; ...

3 months ago | 1

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Answered
how to get variable value in plot automatically
x = 0:10 ; figure hold on for i = 1:3 y = i*x ; plot(x,y) end legend OR x = 0:10 ; figure hold on for i =...

3 months ago | 0

Answered
How can I compare a set of variables?
x1= 1; x2= 3; x3= 4; x4= 3; x5= 3; x6= 1; x7=2; x = [x1 x2 x3 x4 x5 x6 x7] ; [c,ia,ib] = unique(x) ; iwant = cell(le...

3 months ago | 0

Answered
location of logical matrix
Read about ismember idx = round(rand(10,2)) ; vec = [1 1] ; [c,ia] = ismember(idx,vec,'rows') ; iwant = find(c) ; idx(...

3 months ago | 0

Answered
comparing two data sets and extract specific data from one of them
YOu can make your blue lines a closed polygon.......and use inpolygon to get the points lying inside and on the blue lines. Read...

3 months ago | 0

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