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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

mer än ett år ago | 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...

mer än ett år ago | 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...

mer än ett år ago | 1

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

mer än ett år ago | 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) ...

mer än ett år ago | 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])

mer än ett år ago | 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)

mer än ett år ago | 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

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

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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))

mer än ett år ago | 0

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Answered
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)); ...

mer än ett år ago | 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})

mer än ett år ago | 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...

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Answered
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)

mer än ett år ago | 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...

mer än ett år ago | 0

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

mer än ett år ago | 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 ...

mer än ett år ago | 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...

mer än ett år ago | 0

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

mer än ett år ago | 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...

mer än ett år ago | 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','.')

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Answered
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...

mer än ett år ago | 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...

mer än ett år ago | 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

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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)...

mer än ett år ago | 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)

mer än ett år ago | 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...

mer än ett år ago | 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)

mer än ett år ago | 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,...

mer än ett år ago | 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...

mer än ett år ago | 0