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# KSSV

### INCOIS

6,512 2011 이후 총 참여 횟수

Professional Interests: Mathematical Computing

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define x and y for interpolation of scattered data
Let A be the matrix, which is of size m*n x = 1:n ; y = 1:m ; [X,Y] = meshgrid(x,y) ; xq = 1:0.5:n ; yq = 1:0.5:m ; ...

약 4시간 전 | 0

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How can I save data in a multidimensional array
As you have Table T in your hand. You have what you want in hand already. You can access your required array suing. T.Vego ...

약 4시간 전 | 0

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using a vector to represent three coefficients.

약 4시간 전 | 0

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Getting the max value of a certain column, fetching the entire row from a 3D matrix and write those in a new matrix
A = rand(68,8,30) ; % randmom data for demo col = 3 ; % third column from which max to be seeked [m,n,p] =size(A) ; ...

약 5시간 전 | 0

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How to smooth out a surf plot
surf(z_vec, v2in_vec, all_v2.') Increase the dimensions of z_vec and v2in_vec. Make the difference/ step size small to increase...

약 5시간 전 | 0

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Classification learner app input issue
Two options: Merge all the csv files into single csv file and load the data through csv file. Load each file data into works...

약 5시간 전 | 0

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How to make visualization of multi-vehicle motion?
Use interpolation and get all the vehicles to the same time vector. Read about interp1. When you do this, your position of each ...

3일 전 | 0

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How to sum columns of a matrix in MATLAB in specified number of columns?
A = rand(2500,500) ; B = reshape(A,2500,10,[]) ; iwant = squeeze(B,2) ;

3일 전 | 0

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How to make every element in the form of isoparametric, Lagrangian quadratic element?
nodes = [nodes(:,1) nodes(:,5) nodes(:,2) nodes(:,6) nodes(:,3) nodes(:,7) nodes(:,4) nodes(:,8) nodes(:,9)] ;

3일 전 | 0

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Obtaining the pixel values within an ROI
As you have the coordinates for the boundary, use inpolygon and get the locations of the points lying inside the clsoed region.....

3일 전 | 0

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contour plot for 3d data with x, y, z and c in matlab

4일 전 | 0

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How to use a shapefile to extract regions outside the shapefile?
Read the shape file using shaperead. This has single/ multiple regions. Pick one closed region fromt he shape file Take the ...

10일 전 | 0

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Choose n points randomly from a circle, how to calculate the probability that all the points are in one semicircle?
% Generate circle r = 1. ; % radius th = linspace(0,2*pi) ; x = r*cos(th) ; y = r*sin(th) ; % Geenrate random points...

10일 전 | 0

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Plot 4000x500 2D matrix

10일 전 | 0

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Generate (X,Y) grid coordinates from within contour boundary
Use boundary to get the boundary of your required region. Use inpolygon with the generated grid and boundary points to get the...

10일 전 | 0

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I want to read image name to be an string
imgNames = dir('*.jpg') ; N = length(imgNames) ; for i = 1:N img = imgNames(i).name end

12일 전 | 0

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How to draw three graphs together to make a composite figure
C = [0 0 ; 1 0 ; 1 1 ; 0 1 ; 0 0 ] ; A = [0 1 ; 0 1.25 ; 1 1.25 ; 1 1 ; 0 1] ; B = [1 0 ; 1 1 ; 1.25 1 ; 1.25 0 ; 1 0] ; ...

12일 전 | 1

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Converting output from 'find' into a logical
Read about ind2vec. By the way you can straightaway logical, there is no need to use find.

12일 전 | 0

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Find the surface area of an object using stereo vision.
After using delaunayTriangulation, you have vertices and nodal connectivity in hand. Then you can use this function to get the a...

13일 전 | 0

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Is there a way to come up with all the combination between 0 and 1 that sum up to equal 1?
x = 0:1/100:1 ; id = nchoosek(1:length(x),4) ; thesum = sum(x(id),2) ; % find sum == 1 idx = thesum==1 ; iwant = x(id...

13일 전 | 1

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Damping ratio computing from a MATLAB plot
For natural frequency you need to look into fft. Damping ratio can be calculated using logarithamic decrement approach. https:...

13일 전 | 0

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How to extract data from a cell array?
Already you have the cells in your desired way. You can access them using C{1} , C{2}, C{3} . You need to store them again...

14일 전 | 0

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How to plot data T(3023x1 table) and I(3023x1 table)?
plot(t.1,i.1)

14일 전 | 0

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How do I restrict a decimal number to 2 significant decimal places?
Refer for the same discussion: https://in.mathworks.com/matlabcentral/answers/79928-reduce-precision-of-a-number

14일 전 | 0

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how to divide a region into elements where each element is 9 node element in matlab?
You can extend the following to your needs. https://in.mathworks.com/matlabcentral/fileexchange/33731-meshing-a-plate-using-...

14일 전 | 0

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interpolation with non-zero data only when using griddata
Get the boundary of your required region use inpolygon to get the points lying inside and outside the boundary Make the data f...

14일 전 | 0

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how to solve the nonlinear equatios?
Try this. syms v T p=30;d=1;lamda=0.8;c=10;r=35;h=0.05;chi=200;k=0.02;b=7;a =0.01; w = k*(1-exp(-a*chi)); M=k*a; equation1...

18일 전 | 0

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length and width of room is increased by 20 percentage.what percentage has the area increased by
Let l, b be your old length and breadths. l1, b1 be new lengths and breadths l1 = 120/100*l ; b1 = 120/200*b ; A1 = l1*b1...

18일 전 | 0

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help!!! with plot
a=200;b=5;cm=10;cr=3;v=600;k=6;u=0.1;s=0.2;e=2;cp=2;t=1; pr=1:10; r=-(pr*u*(b*cm - a + cp*e*k + b*cp*e*t))./(8*v + 2*b*pr.^2*u...

27일 전 | 0

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I'm trying to do a Taylor series method for the equation y and compare it to the analytical solution. However, I keep getting a matrix dimension error. any help would be much appreciated.
Using diff reduces the dimension of the array by 1. You check the dimensions of y1, y2, y3, y4..they are of size 1X20, 1X19, 1x1...

27일 전 | 0