Community Profile

# KSSV

### INCOIS

6,635 2011 年以降の合計貢献数

Professional Interests: Mathematical Computing

#### KSSV's バッジ

I wish to integrate this expression
syms V T v U r S C t f = (V/(9.81*(T-T*V/v)-U*r*S*C(t^2-V^2)/2)) ; int(f,V)

3日 前 | 0

I need to plot a trajectory, of a point on circumference of a circle moving around its centre and centre is moving along its x-axis.
% cicle th = linspace(0,2*pi) ; r = 1. ; xc = r*cos(th) ; yc = r*sin(th) ; % center of circle movine along ax axes x...

3日 前 | 0

Searching point unknown on the grid

4日 前 | 0

Removing zeros from a binary array if length of zeros is lesser than a value
input = [0;0;0;0;0;0;0;1;0;1;1;1;0;0;0;0;0;0;1;1;0;0;0;0] ; idx = input==1; % get the locations of 1 % split zeros and on...

4日 前 | 0

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how can i change this code
in = 0 ; pivot = table(in,index); In the above line you have indexed in to zero. There is no zero and negaitve indices in MAT...

4日 前 | 0

How to take the inverse of each individual array value and store it to a new array?
If R is value, if you want inverse use C = 1/R ; If R is an array use: C = 1./R ; In your case..use Conductances = 1....

4日 前 | 0

selecting specific rows from a matrix corresponding to the columns of other matrix
Let A abd B be your matrices of size 40*2 and 25000*9. [m,n] = size(A) ; C = cell(m,1) ; for i = 1:m C{i} = B(A(i,1...

4日 前 | 0

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Vector plot over a surface plot
TT = hypot(qx, qy); figure() pcolor(x, y, TT); xlim([-7 7]); ylim([-5 5]) colormap jet colorbar view(2) hold on quiver(...

4日 前 | 0

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Calculate the length of symbolic expression
S = char(df) ; % convert sym to string idx = strfind(s,' ') ; % get empty spaces S(idx) = [] ; % remove the mepty sp...

5日 前 | 0

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how to plot euler formula in matlab?
i = linspace(0,1,100) ; y = exp(100*i*pi) ; plot(i,y)

5日 前 | 0

K-Means Matlab cluster assignment
If idx are the indices and P are the points you have. figure hold on for i = 1:4 plot(P(idx==i,1),P(idx==i,2),'.') ; ...

5日 前 | 0

How can I limit a set of input data, 6 values, to a min and max point and as an integer
if min(user)<1 || max(user)>59 error("Check the input") endif

5日 前 | 1

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Error to applying ismember for cell arrays
load("example.mat") ; N = length(A) ; A1 =zeros(N,1) ; for i = 1:N A1(i) = str2num(A{i}') ; end B1 = cell2mat(B)' ;...

5日 前 | 0

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Converting flowchart to matlab code
x = 0 ; % your initial x value y = 100 ; % your fixed y value t0 = 0 ; % initial time dt = 0.00025 ; % time step t =...

5日 前 | 0

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How do i find the intersection between two torus ?

5日 前 | 1

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Make coastline contour from DEM (3d matrix)
[c,h] = contour(dem,[0.5 0.5]) ; % filter c idx = c(1,:)<1 ; c(:,idx) = NaN ; figure pcolor(dem) ; shading interp ;...

5日 前 | 0

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How to pull a range of values out of an array using a loop
Simply use: idx = tau < 1e8 ; In idx, 1 is acceptable and 0 is unacceptable. Read baout logical indexing. You need not run ...

5日 前 | 0

how to combine three different column into a single colum using colon
If you have it in matrix...A use.. iwant = A(:) ;

5日 前 | 0

Increase the resolution of line plots

5日 前 | 0

calculation x-value, given the y-value of a discrete function

5日 前 | 0

How can i query last column based on another values column

5日 前 | 0

How to generate point cloud of two merged spheres?
Refer here: https://in.mathworks.com/help/matlab/math/numbers-placed-randomly-within-volume-of-sphere.html

5日 前 | 0

Index in position 2 exceeds array bounds
You size of pos is 4x2....you are trying to accessing third coulmn from pos....where as it has only two columns..so obviously yo...

5日 前 | 0

Is there a way to pass in a matrix of color values (n*3) into plot in matlab
You need not use a loop..you can make your data a matrix and use plot. X = repmat(1:10,10,1) ; Y = rand(10) ; plot(X',Y')

5日 前 | 0

Convert 2D data to 3D matrix
If T is your Table...you can access the data of the column using T.(1) , T.(2), T.(3) etc.,. If you have column names....you can...

5日 前 | 1

store multiple values in one variable
dataset_folder='D:\Project\resize\'; file_name=dir(fullfile(dataset_folder,'*.jpg')); total_images=numel(file_name); r = zero...

6日 前 | 0

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How to delete values when value is 3&4 then 7&8 then 11&12....
If you have an array A...To remove a specific element use: A(A==val) = [] ;

10日 前 | 1

getting error in calculation and plot. what is the exact problem
YOu have a function handles in plot..you need to send input to those functions handles. P=101.325; a1=7.19736;b1=1574.99;...

10日 前 | 0

How can eliminate features whose values are zero from array?
If A is your array..you can remove zeros using: A(A==0) = [] ; Or A = A(A~=0) ;

10日 前 | 0

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How to map two different gray pattern in two images?
You can make boundary as below: I = imread('temp1.jpg') ; [nx,ny,nz] = size(I) ; [X,Y] = meshgrid(1:ny,1:nx) ; id = I~...

10日 前 | 0