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how to export two mat.files into a single excel sheet?
Read all your files using load Write all the data using writematrix

2年以上前 | 0

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Plotting letter "D" on 3D space
3D letter D r = [1 1.5 1.5 1 1]; % radius of a circles t = [-20:10:200 -20]'*pi/180; % closed contour [T...

2年以上前 | 0

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How to restart a for loop when specific condition is met?
Place for loop inside while loop k = 0; while k < 5 for i = 1:10 if i > 5 k = k + 1; b...

2年以上前 | 1

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extracting sub matrix from a cell array
Try data1 = data{1}(:,3:8)

2年以上前 | 1

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how can I plot a matrix against two other ones? (need to a matrix 3d plotting )
Use surf [x,y,z] = peaks(30); h = surf(x,y,z); for i = 1:20 z = z + 0.5*rand(30); set(h,'zdata',z) pause(0.5) ...

2年以上前 | 0

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Finding the intersection points between two curves
I'd try fsolve for solving Read help carefully: fplot(f,[0 10])

2年以上前 | 1

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isosurface with wall thickness
What abouy simply to make thicker a lines? [x,y,z] = peaks(30); surf(x,y,z,'linewidth',3)

2年以上前 | 0

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how do i continuously calculate an output with an increasing input of angles ?
You need to make wi vector the same size as wj and wk wi = [-w_n+theta*0 0 0]; % i component of W

2年以上前 | 0

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How to get the curvature of a meshed surface?
Here are some ideas: Simple way: Precise way:

2年以上前 | 1

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Change the value of independent variables to solve the dependent variable equation
Use function handle x = 0:.1:10; f = @(a) sin(a*x); plot(x,f(2),'r') line(x,f(5))

2年以上前 | 0

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Detecting circles in noisy images with high intensity variations (must work for all cases)
Is the circle the only figure of closed form? A0 = imread('Sem Título.png'); A1 = im2bw(A0); A2 = imdilate(A1,ones(10)); ...

2年以上前 | 0

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Detecting black blob (mouse) in .tif frames
Here is the siple script that does the job A0 = imread('img1.png'); A1 = im2bw(A0,0.2); montage({A0 A1})

2年以上前 | 0

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Plot lines from FEM (PDE) stress vectors
% generata data n = 20; % number of points x = rand(20,1); y = rand(20,1); u = rand(20,1); v = rand...

2年以上前 | 0

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Can this loop containing different indices be vectorized using implicit expansion (or otherwise)?
Simply remove keywords for and end. Don't forget about element wise operator (dot)

2年以上前 | 0

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Plot a moving wheel in the 3D space
% create model t = linspace(0,2*pi,10); [x,y] = pol2cart(t,1); X = [y*0;y*0;y*0+2;y*0+2]; Y = [y*0;y;y;y*0]; Z = [x*0;x...

2年以上前 | 0

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How to Draw an ellipsoid between two 3d coordinates
Use rotate to rotate the ellipsoid

2年以上前 | 0

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FEM : plotting stress field in each T3 element
Here is an example: [x,y] = meshgrid(-2:0.2:2); % x,y range z = x.^2+y.^2-4; % z value h0 ...

2年以上前 | 0

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Specifying condition criteria for while loop iteration
Did you try to assume the sign of the function value? Derivative can be positive and negative regardless of the value Maybe s...

2年以上前 | 0

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How to get the volume and surface area of separated isosurfaces
Use bwlabel to separate each blob

2年以上前 | 0

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How to find opposing triangle pairs in triangulated objects?
Here is an idea or finding neigbour points; % some data x0 = rand(40,1); y0 = rand(40,1); s1 = max(max(x0)-min(x0),max(y...

2年以上前 | 0

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vector of line chart objects returned by plot - problem with modifying markers,...
Try this x = 0:10; y = sin(x); h(1) = plot(x,y,'r'); h(2) = line(x,y+.5); set(h(2),'marker','.')

2年以上前 | 0

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maps and isolines on the map of the continents
What about this? t = 0:0.02:2*pi; % angle r = 1 + 0.1*cos(10*t); % radius [x0,y0] = pol2cart(t,r); % calcu...

2年以上前 | 0

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Solve a complex differential equation over different intervals
Here are some notes: there is no need of creating special mesh. You have 3d order diff equation so you need 3 yinit yinit = [p...

2年以上前 | 0

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Transform a Numpy array of a mask
Assume A is your 3D matrix (1024x1024x3) A1 = A(:,:,1); % extract first matrix

2年以上前 | 0

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Extracting points from polyshape
See this link about curve interpolation: LINK Saving the data as a picture is a good idea too: try print x = 0:20; y = sin(x)...

2年以上前 | 1

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How to create membership functions matlab in triangular form?
Use sine wave x = 0:pi/2:20; y = sin(x); plot(x,y)

3年弱前 | 0

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Draw arc with specified angle difference
Wha about this representation? s = load('data.mat'); t = linspace(0,1,20)*pi/180; % angle array [X,Y,Z] = deal( ze...

3年弱前 | 0

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How to show two axis on a plot only where i want them
try this yticks h = plot(0:10,sin(0:10)); yy = 0:0.2:1; [x,y] = ndgrid([0 10],yy); line(x,y) yticks(yy)

3年弱前 | 0

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Volume of a solid of revolution for a cross section by points
Looks like simple ellipsoid. Try alphaShape n1 = 50; % circle points n2 = 10; % number of circles [x,...

3年弱前 | 1

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Generate distinct geometric shapes by using radius ?
Here is ax example t = linspace(0,2*pi,4); % triangle [x,y] = pol2cart(t,30); % cartesian coordinates % move tria...

3年弱前 | 0