# KSSV

https://sites.google.com/site/kolukulasivasrinivas/

Professional Interests: Mathematical Computing

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Extract Tables from within a cell

load('Tables.mat'); T = cellfun(@table2array,Tables,'UniformOutput',false) ; iwant = cell2mat(T') ;

en dag ago | 0

How can I find the index of a specific element in an array

R = 5000; T = [0 8 39.3 103 236.5 511.7 1026.1 1906.9 3148.7 4293 4011.9 2628.4 1037.4 203.7 28.6 9.4 4.2 1.4 1....

en dag ago | 0

How do I have different colours for each plot even having a different option in the popupmenu

x = (1:10)' ; A = rand(10,3) ; figure plot(x,A(:,1),'r',x,A(:,2),'b',x,A(:,3),'g') figure plot(x,A) figure hold on plo...

en dag ago | 0

Detecting Contour of bubble

I = imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/814649/image.jpeg') ; % Remove boundary/ crop I = ...

en dag ago | 0

how to change the orientation of an extrapolated image?

Let (X,Y) be your original grid data coordinates. lon0 = min(X(:)) ; lon1 = max(X(:)) ; lat0 = min(Y(:)) ; lat1 = max(Y(:)) ...

2 dagar ago | 0

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How to convert the complex number as a 2D vector to train a neural network

To get real and imaginary part of the complex number, use real and imag. For other part use reshape.

2 dagar ago | 0

finding number of centroids of a binary image

REad about regionprops. You can also try kmeans. Read about it.

3 dagar ago | 0

Is there any way that indexing(subscript) 0 can be permitted. As these should be positive integer or logicals.

Note that a logical is 0 / 1 idx = logical(0)

3 dagar ago | 2

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Geotif image appears darker

Use geotiffread / readgeoraster and the plot the data. Read about pcolor to plot.

3 dagar ago | 0

ODE45/ODE15 inquiry about nonlinear spring

You may refer the following links to understand what to do. https://in.mathworks.com/matlabcentral/fileexchange/33168-springpe...

3 dagar ago | 0

how to remove the NaN values from a dataset?

Read about isnan, A = [1 2 NaN 2 NaN rand] ; idx = isnan(A) ; A(idx) = [] % remove NaNs If you try to remove NaN's from...

4 dagar ago | 1

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I need to repeat a sequence 33 times

Read about repmat. A = [1 2 3] ; B = repmat(A,1,3)

4 dagar ago | 0

How to muliply non equal vectors with slicing?

A = 1:12; B = 1:4; A = reshape(A,4,[])' ; iwant = A.*B

4 dagar ago | 0

Extracting closed contours of streamfunction

Did you try this? https://in.mathworks.com/help/matlab/ref/streamline.html

4 dagar ago | 0

how to save variable as txt in a specified location with variable value appearing in the file name

path='c:/users/user/desktop'; filename = [path,filesep,'Gauss',num2str(width),'.txt']; fid = fopen(filename,'w') ; fprintf(fi...

4 dagar ago | 0

How to plot 3D filled contour ?

You can plot one level at a time: for i = 1:18 plot(lon,lat,levels(:,:,i)') shading interp drawnow end If you ...

4 dagar ago | 0

Index exceeds the number of array elements. Index must not exceed 3.

This error occurs when you try to extract more number of elements then present in the array. A = rand(1,4) ; % 1x4 array A...

4 dagar ago | 0

How to downsize image in x and y direction?

Read about imresize. img = imread('img') new_img2 = imresize(img, 1/2); imshow(new_img2)

4 dagar ago | 0

How do I refer to the next y point in a function?

You need to define x as an array, when you sustitue x in the function f, you will get output array y which is of same dimension ...

4 dagar ago | 1

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How to make 3d plot to model logistic regression?

a0 = -3.936212854; a1 = 0.140718658; a2 = -0.102108952; m = 100 ; n = 100 ; C = linspace(0, 320,m); P = linspace(0, 0.58,n...

4 dagar ago | 1

How do I plot this beam, given the coordinates, distances between the nodes, and the connections, and the lengths of each segment?

Read about delaunayTriangulation. This would be easy to use to plot the shown. https://in.mathworks.com/help/matlab/ref/delaun...

4 dagar ago | 0

Making all Elements in Matrix Even.

a=[53, 59, 61, 87] ; iwant = a+mod(a,2)

5 dagar ago | 0

Retain all initial even value elements, add all odd values with 1

Hint: Read about mod. If mod(x,2) is 1 then x is odd. mod(4,2) % even number mod(5,2) % odd number

5 dagar ago | 0

Find position of the maximum value and then convert the row zeros and the position of the maximum value should become 1. just like in the image attach

A = rand(4) ; [m,n] = size(A) ; B = zeros(m,n) ; [val,i] = max(A,[],2) ; idx = sub2ind(size(A),(1:m)',i) ; B(idx) = ...

5 dagar ago | 0

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Size of Q is undefined

You need to define the input variables and then call the function. It seems you are striaght away hitting the f5/ run button so ...

5 dagar ago | 0

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How to find the contigous coordinate points between two varaibles datasets and do regression

idx = knnsearch(A(:,1:2),B(:,1:2)) ; B = B(idx,:) ;

5 dagar ago | 0

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Simple logical conditional flag column

Simple, Let C1 , C2 be your two columns. C2(C1==1)=1 ; C2(C1==-1)=0 ;

5 dagar ago | 1

Problem for doing Monte Carlo Integration

Your y in the ocde is a anonymous function: function_handle with value: @(x)sin(x) You need to input some value into ...

5 dagar ago | 1

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How to draw multiple plots in one picture?

subplot(411) plot(rand(100,1)) subplot(412) plot(rand(100,1)) subplot(413) plot(rand(100,1)) subplot(414) plot(rand(100,1...

5 dagar ago | 1

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I want to arrange a 1st column of a matrix in descending order an the elements in the row is going to arrange itself according to change of the row of first vector

A= [3 2; 1 4; 2 6] ; [val,idx] = sort(A(:,1),'ascend') A = A(idx,:)

5 dagar ago | 1