darova
Last seen: 12 giorni ago
1.453 total contributions since 2019
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Awarded to darova on 05 Mar 2019
Use a different colormap scale for different sections of a matrix
YOu can create your own color matrix [x,y,z] = peaks(30); ix = x.^2 + y.^2 < 2^2; c1 = z*0; c2 = z*0; c1(ix) = 1; c2(~ix) ...
12 giorni ago | 0
Medial axis extraction from a .STL file
An example [x,y,z] = cylinder(10); h = surf(x,y,z); p = surf2patch(h,'triangle'); p.facecolor = 'red'; stlwrite('test',p) ...
12 giorni ago | 0
Solving Population Balance Equation for multiple initial particle dimensions
First of all - timespan 0:1.2 is just [0 1] L=[1.2]; % Pipe Length ranges (m) [Z,N]=ode15s(...
12 giorni ago | 1
how to add titles row wise in the montage ?
What about text function? load mri montage(D, map) text(500,25,'TITLE 1','fontsize',30,'color','yellow','fontweight','bold') ...
12 giorni ago | 0
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Plot in 300 or 600 dpi
Use print x = 0:10; y = sin(x); plot(x,y); print('test','-dpng','-r300')
12 giorni ago | 1
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Plotting dates on the x-axis
Just use datenum a = rand(5,4,3); datenum(a(:,1),a(:,2),a(:,3)) Use sort if needed
12 giorni ago | 0
Solve an equation, for a variable, with prompts?
What about this? function main a = myprompt('Please enter a:'); b = myprompt('the same way b:'); function y = myprompt(s...
12 giorni ago | 0
Looping of more than one first order equations in in function file that can be updated for different value variable parameter
See this example f = @(t,x,a) [x(2); x(1)-a*sin(x(1))]; a = rand(10,1); % parameter cmap = jet(10); for i = 1:length(a)...
12 giorni ago | 0
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How do I print probability distribution object into textbox?
Here pd = makedist('Normal'); sig1 = pd.sigma mu1 = pd.mu
13 giorni ago | 1
solving equations with trigonometric functions
Here is the similar example. Maybe you will be interested , , and length are given. angle is changing Calculate length and...
13 giorni ago | 0
How to get back the values of a curve from its cumulative integral value?
Use diff to find real curve from cumulative trapezoid result
14 giorni ago | 0
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How to convert from surf to plot3 ?
Try meshgrid [X1,Y1] = meshgrid(X,Y); plot3(X1,Y1,Z1) line(X1',Y1',Z1')
14 giorni ago | 1
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How do I create variable vectors with a new value for each iteration of a loop?
Here are some corrections % yp=y0; % you are replacing variable yp with y0 yp(1) = y0; % you need to replace first valu...
14 giorni ago | 0
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Measure distance and angle of object
Here is the algorithm crop the region 1 and find min/max [m,n] = size(step1); [~,x1] = find(step1(:,1:n/2),1,'last'); [~,x2...
14 giorni ago | 0
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how to compute derivative
Only you know initial conditions. Imagine the situation: you are throwing the ball, initial conditions are velocity and angle. O...
14 giorni ago | 1
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Plotting Convergence Graph from Bisection Method
Try this while %condition % code line(iter,erorr,'marker','.') iter = iter + 1; end
14 giorni ago | 0
How to generate straight lines to 2D target points, each straight line is connected by 10 points which represent 10 steps from (0,0) to target point, for example (5,6)?
What about this x = rand(20,1); y = rand(20,1); line([x x*0]',[y y*0]')
15 giorni ago | 0
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How to detect a curve (surface roughness) from image?
binarize image first remove noise using bwareaopen use edge remove noise if needed using bwareaopen
15 giorni ago | 1
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Having trouble making a surface plot using data from Excel
Either use triangulation x = rand(20,1); y = rand(20,1); z = rand(20,1); dt = delaunay(x,y); trisurf(dt,x,y,z) Either gr...
15 giorni ago | 0
How can I use the subplot command to plot the root estimates vs iterations and the error vs iterations
Try this figure hold on while %condition % some code subplot(2,1,1) plot(iter,root) subplot(2,1,2) p...
15 giorni ago | 0
Integrating a function with one of the limits a matrix
Why don't just use for loop? integralCalculated = zeros(size(u)); for i = 1:length(u) integralCalculated(i) = integral(@(...
15 giorni ago | 0
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Evaluating polynomial functions to get integer as answer
solve can be used for simple problems. Use fsolve or vpasolve to get numerical results
15 giorni ago | 1
How to calculate area under each peak in plot from sampled data
Here is ax example x = 0:20; y = sin(x); [xc,yc] = polyxpoly(x,y,[0 20],[0 0]); % find '0' points intersections x1 = [x...
16 giorni ago | 0
Triangulation of a domain
Here is ax example of triangulation t = (0:90:270)+45; [x,y] = pol2cart(t*pi/180,1); gd = [2;length(x);x(:);y(:)]; % geomet...
16 giorni ago | 1
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empty figure for a given code
You forgot the dot (element-wise operator) You can simplify your code using for loop a0 = 1; for i = 1:5 a0 = ((a0*K-a...
16 giorni ago | 1
Filling in a spherical triangle
clc,clear t = [0; 45; 45]*pi/180; q = [45; 45; 90]*pi/180; [x,y,z] = sph2cart([t;t(1)],[q;q(1)],1); % convert angl...
16 giorni ago | 0
How to create custom color wheel for velocity data stored as RGB and only using R/G channels?
What about this? [R,G] = ndgrid(0:10:360,0:1); % polar coordinates [X,Y] = pol2cart(R*pi/180,G); % convefrt o cart...
16 giorni ago | 0
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i want to draw a streamline at 45 degree.
clc,clear [t,r] = ndgrid(0:5:45,0:10); % create mesh in polar coordinates [x,y] = pol2cart(t*pi/180,r); % con...
16 giorni ago | 0
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How to get all yellow piexels that interact with the blue piexels?
What about contour? [m,n] = size(data); [x,y] = meshgrid(1:m,1:n); [C,h] = contour(x,y,data,[0.9 0.9]); h1 = get(h,'children...
16 giorni ago | 0
Compute x and y by integrating the ODE system using Huen's method.
You should use for loop function [x,y] = odeHuen (f,x0,h,nSteps,y0) % Initialize the output solution arrays. m = length(y0);...
16 giorni ago | 0
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