Answered
How to NOT share variable with nested function?
If you declare function or variable inside nested function it rewrites itself. There is no option for mistake function main a ...

mer än 2 år ago | 0

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Rotate the centre plate in a geometry
You can rotate it using rotation matrix Or you can use rotate()

mer än 2 år ago | 0

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How to create a single gobjects for different plots to avoid using clf
Try this way x = 0:.2:10; y1 = x + nan; y2 = x + nan; h1 = plot(x,y1,'r'); h2 = line(x,y2); for i = 1:length(x) y1(i)...

mer än 2 år ago | 0

Answered
ODE 45 couldn't solve the differential equation.
Try this way psol = []; for k = 1:3 ode_ = @(z,Pp) (-ap + (((sca*nc)-(sac*na))*Tp*Nt(k)*Pp))'; psol = [psol; ode45(o...

mer än 2 år ago | 0

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How can I change the line colour in a geoplot based on data?
Try set h1 = geoplot(..); set(h1,'color','r')

mer än 2 år ago | 0

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Ignoring certain matrix entries with surf plot
Don't use '==' equal sign for comparing double numbers ii = abs(MatrixName-0)<0.1; % precision MatrixName(ii) = NaN;

mer än 2 år ago | 0

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how can i let all number in matrix X between 0~1?
It's called scaling A1 = (A-min(A(:)))/(max(A(:))-min(A(:))) *1;

mer än 2 år ago | 0

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How to place/ define points on a triangulated meshed surface?
How about simple griddata with using initmesh t = 0:.2:5; x = [t; t]; % some data y = [t*0; t*0+3]; ...

mer än 2 år ago | 1

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RK 6 method giving large errors
First of all you should rewrite your code to make more readable. The code is very difficult to to check. Make it as clear as pos...

mer än 2 år ago | 2

Answered
How to 3D plot eight 4x4 matrices to form a cuboid?
What about cylinder? r = sqrt(2); t = linspace(0,2*pi,5)+pi/4; z = [0 0 1 1]; [T,Z] = ndgrid(t,z); [X,Y] = pol2cart(T,r); ...

mer än 2 år ago | 0

Answered
How can I do a spline interpolation with tangent continuity
What about this? I calculated tangent at each point and added points dx = 0.1; % adding points distan...

mer än 2 år ago | 0

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Get the percentage of dark spots
Use first matrix of an image (red channel) A0 = imread('image.png'); A1 = ~im2bw(A0,0.8); % select the stick A2 = A0(:...

mer än 2 år ago | 1

Answered
3D surface reconstruction from 2D image recorded through a prism
Try something like this: % [xw3,yw3,zw3] - 3D positions of white markers % [xw2, yw2] - 2D positions of white markers % [x...

mer än 2 år ago | 0

Answered
How to solve exceed number of array element (1) problem?
Here is the problem. You are redefining the variable inside for loop and it has (1) element again

mer än 2 år ago | 0

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Answered
Results are NaN or absurd if a certain parameter changes.
I suggest you to visualize the data in 3D. See how values change each step T = zeros(20); a = 0.04; % consta...

mer än 2 år ago | 0

Answered
How to calculate an area with obtained nodes?
An example of boundary function. polyarea is used to calculate area r = 1; x = linspace(-1,1,20); y = sqrt(r^2 - x.^2); x = ...

mer än 2 år ago | 0

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Answered
How to count white pixels in Watershed segmented image?
Here is an example with using bwlabel A = zeros(100); t = linspace(0,2*pi,1000); % a lot of points [x,y] = pol2cart(t,1)...

mer än 2 år ago | 0

Answered
aligning data for fprintf
Here is ax example a = rand(10,1)*1e4; sprintf('a = %7.2f\n',a')

mer än 2 år ago | 0

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Answered
Plot a sine wave with decreasing frequency over time
Modify x coordinate x = 0:.1:30; y = sin(x); x1 = x - 10*(x/max(x)).^2; % shift last point 10 units plot(x1,y)

mer än 2 år ago | 0

Answered
Simulate a dot moving in an ellipse
Use pause() t = linspace(0,2*pi,20); x = 5*cos(t); y = 3*sin(t); h = plot(5,0,'.r'); line(x,y) for i = 1:20 set(h,'xd...

mer än 2 år ago | 1

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Answered
I want to find the value of two constants from an equation with two variables
Try fit

mer än 2 år ago | 1

Answered
Estrarre l'intervallo di dati impostando il valore sulla matrice
Use griddata to interpolate the data Use slice to create slices

mer än 2 år ago | 1

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plot 2D matrix data
Use griddata to create matrices

mer än 2 år ago | 0

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How can I condense a larger matrix into a smaller matrix based on elements of a vector?
Read about mat2cell

mer än 2 år ago | 0

Answered
Is there anyway to Re-grid one dataset to another dataset resolution without interpolating??
Maybe this A = ones(3,3); B = [A;nan(6,3)]; C = reshape(B,3,[])

mer än 2 år ago | 0

Answered
How can i draw graphene first brillouin zone using matlab?
Here is ax example t = linspace(0,2*pi,7); [x,y] = pol2cart(t,3); surf([x;x],[y;y],[x*0;x*0+1],'facecolor','none') axis equa...

mer än 2 år ago | 0

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Answered
Need to access the structure values in numerical form and store it in an array each time the loop runs
Make some modifications An example syms x y sol = solve([5*x-y y-1])

mer än 2 år ago | 1

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Answered
How to compare solution of ODE for each time step?
Maybe you are looking for event option. Then just place ode45 insife while loop t0 = 1; while contdition [t,x] = ode45(f,...

mer än 2 år ago | 0

Answered
How to integrate the indices of a vector of doubles?
Sure t = linspace(0,1,12054); S = trapz(t,AT);

mer än 2 år ago | 0

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Answered
trying to use integral transform to multiple large arrays but getting an error about array being too large to calculate
Maybe you need just interpolate the data to make the same size % x data with 88000 elements t1 = linspace(1,88000,15001); ...

mer än 2 år ago | 0