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# darova

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875 total contributions since 2019

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How to apply a texture to a specific portion of a surface?
Use inpolygon to copy region you want Create new surface Apply texture to object

environ 11 heures ago | 0

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How to find x value for a given y?
Here is an example: f = @(x) sin(x); x = 0:10; x0 = fzero(@(x)f(x)-0.5,pi); plot(x0,f(x0),'or') line(x,f(x)) If you have m...

environ 12 heures ago | 0

How do I create a source field of light through a circular aperture?
First of all you forgout about element-wise: X1.^2 + Y.^2 % each element of matrix in power '2' Here is what i tried

environ 12 heures ago | 0

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how to plot for loop using concatenation to increase performance
Try to plot all together at once n = size(A,1); fv.vertices = A; fv.faces = [1:n-512; 512+1:n]'; patch(fv)

environ 14 heures ago | 0

How to fit a monotonically increasing map to a certain data?
Try f = fit([x(:) y(:)],z(:),'poly11'); % or manually % f = fit([x(:) y(:)],z(:),'a*x+b*y+c');

environ 15 heures ago | 0

fsolve for a set of equations
Try this syms x a = 1; b = 2; f = a*x+b; F = matlabFunction(f); fsolve(F,1)

environ 16 heures ago | 0

Select edges that connect subgraphs together
try ismember

environ 17 heures ago | 0

Reading in different files based on a array of strings
Use this simple construction Contact = {'C1.txt','C2.txt'}; %this is the array of strings that i am using for the names of each...

environ 17 heures ago | 0

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VRML surface conic projection
Here is an idea: Projection onto cone: if your data in cartesian system - convert it to polar () New radius of projected d...

environ 20 heures ago | 0

Title on the colour bar and legend issues
Use handlers to add specific string to legend pcolor() hold on h1 = plot(); h2 = plot(); hold off legend([h1 h2],'red','bl...

1 jour ago | 0

Filling a region between parametric curves?
Try this to detect which values in a wrong order % This is a plot of the region I want to get! X = [real(z_ub) flip(real(z_ub)...

1 jour ago | 1

I am trying to create a normal random moving point for each individual point in a 3D scatter point. How do I go about to do this?
What about this? n = 5; [X,Y] = meshgrid(1:n); % create mesh T = 180*rand(n)-90; % initial angle...

1 jour ago | 0

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Trouble calculating Acceleration from given velocity vector.

2 jours ago | 0

How to load file that is without extension
Try importdata A = importdata('what.data.1')

2 jours ago | 0

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Error using ODE45
The name of function is myinput function u=myinput(t,M) But you are trying to pass as argument some u [~,Xout11] = ode45(@(t,...

2 jours ago | 0

range different longitude and latitude geoshow
Here is my idea Use meshgrid to create a grid (red points) Use inpolygon to choose points inside map (blue circles)

2 jours ago | 0

Applying different equations to sections of a column using a for loop
What about for loop? for i = 1:300 if i <= 100 y(i) = a1*x(i)+b1(1); elseif i <= 200 y(i) = a2*x(i)...

2 jours ago | 0

Make white portions of slice of flow data transparent
An example of how to make some faces transparent [X,Y] = meshgrid(-10:10); % generate mesh Z = -X.^2-Y.^2; ...

2 jours ago | 0

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calculating and writing sorted results in matlab
Can I use the command dlmwrite with some parameters? Yes you can. example M = [1 2 3; 4 3 2]; dlmwrite('myFile.txt',M,'delim...

3 jours ago | 0

solving 4 equation with 4 unkowns
It's because of the way you concantenate your equations Example of two different declarations [1 - 2] ans = -1 [1 -2] ...

3 jours ago | 0

Tight surface meshing of 3D points
I just looped through all edges and calculated length clc,clear load points.mat ii = 1:50:size(a,1); % i reduced size of...

3 jours ago | 0

Function returns a vector of length 6, but the length of initial conditions vector is 34. The vector returned by ICEMODELFUNC and the initial conditions vector must have the same number of elements.
You want several solution for thetaRAD So just put your ode45 function inside for loop tspan = t0:tdelta:tf; for i = 1:length...

3 jours ago | 0

How created a graph from unordered node list?
Try this x = x(:); y = y(:); plot([x(source) x(target)],[y(source) y(tagrget)]) or patch function fv.vertices = [x(:) y(:)]...

3 jours ago | 0

How can I get velocity values for stream3 function
A short example clc,clear cla load wind [sx sy sz] = meshgrid(80,20:10:50,0:5:15); h = streamline(stream3(x,y,z,u,v,w,sx,sy...

3 jours ago | 0

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You can create a mesh in polar system of coordinates Assuming t = linspace(0,2*pi,30); % angle r = x; ...

3 jours ago | 0

Plotting a sphere consisting of planes
Use patch for this problem % create data of format % Ax Ay Az % Ax Ay Az % ... % Bx By Bz % Bx By Bz % ... % Cx Cy Cz %...

3 jours ago | 0

tracking object in a video
if these [X_barycentre, Y_barycentre] are coordinates of a center Use imcrop to crop the image h = 50; % side of recta...

3 jours ago | 0

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