Community Profile # darova

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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','.')

ongeveer een uur ago | 0

maps and isolines on the map of the continents

ongeveer 2 uur ago | 0

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...

ongeveer 23 uur ago | 0

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

ongeveer 24 uur ago | 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)...

ongeveer 24 uur ago | 0

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

ongeveer 2 maanden ago | 0

Draw arc with specified angle difference

ongeveer 2 maanden ago | 0

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)

ongeveer 2 maanden ago | 0

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,...

ongeveer 2 maanden ago | 0

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...

ongeveer 2 maanden ago | 0

How to rotate a figure around an origin that is rotating?
Try this t = linspace(0,2*pi,20); [x,y] = pol2cart(t,1); n = 6; % number of small circles h = zeros(1,n)...

ongeveer 2 maanden ago | 0

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How can I convert a surface plot to an Occupancy map 3D?
What about isosurface? [x,y,z] = peaks(20); z = (z-min(z(:)))/(max(z(:))-min(z(:)))*19; % scale values inbetween [1 .. 19...

ongeveer 2 maanden ago | 0

How to create volume out of surfaces?
Your object looks symmetrical. Try manually to create surface p1 = isosurface(...); p2 = isosurface(...); v1 = p1.vertices; ...

ongeveer 2 maanden ago | 0

How can I fade Contour Lines on to the Binscatter plot?
You can extract edge of the region (yellow squares) using boundary [y,x] = im2bw(A); k = boundary(x,y); Then use i...

ongeveer 2 maanden ago | 0

Plotting cone and hyperbola
Here is an example [T,R] = meshgrid(linspace(0,2*pi,20),0:5); [X,Y] = pol2cart(T,R); Z = R; % Y = 7.46/(x+5.10) -0.86 is the...

ongeveer 2 maanden ago | 0

find the minimum distances of all points from neighboring points
Program is slow because of pre-allocation and calling pdist2 everytime try this D = pdist2(centroid,centroid); D = D + eye(si...

ongeveer 2 maanden ago | 0

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Conditionally execute a function inside a vector field while integrating with an ODE solver
Try to pass your condition inside ode function An example function dy = func1(t,x) tset = [10 20 30]; if any(abs(t-t...

ongeveer 2 maanden ago | 1

How to plot streamlines for a fea unstructured mesh with given u,v velocities?
Use griddata to create monotonic data

ongeveer 2 maanden ago | 0

Overlaying gradient patches in single plot.
See this % x_lo = [1000 ; 1000; 1600; 1600]; % x-limits for RED gradient % x_hi = [1400 ; 1400; 2000; 2000]; % x-limit...

ongeveer 2 maanden ago | 0

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Derivative calculator with central difference formula Find the volumetric thermal expansion coefficient for each temperature given in the table. Solve BY MATLAB
Or maybe gradient will be better aproach here. diff returns (n-1) points T = [291 296 305 309 311 316 322 328 331 ...

ongeveer 2 maanden ago | 0

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Zero Area Triangles in Delaunay Triangulation
What about initmesh? t = linspace(0,2*pi-0.1,20); % unclosed contour (without selfintersection) [x1,y1] = pol2cart(...

ongeveer 2 maanden ago | 0

Color gradient for graph in a for loop

ongeveer 2 maanden ago | 0

Area between two curves without intersection
Make sure curves have the same start and end xx = linspace(x1(1),x1(end),100); % new mesh y11 = interp1(x1,y1,xx); ...

ongeveer 2 maanden ago | 0

geodesic distances on a curved surface
Here is an example [x,y,z] = peaks(20); % surface % curve coordinates x1 = linspace(-3,2,20); y1 = linspace(-...

ongeveer 2 maanden ago | 0

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What values do I need to put in

ongeveer 2 maanden ago | 0

Extrapolation of potential values to higher order
scatteredInterpolant has extrapolation property. You can also interpolate the data

ongeveer 2 maanden ago | 0

Divide the 3D surface into equal patches
Try arc length interpolation. Original link: LINK function main clc,clear % generate some data [x,y] = meshgrid(-1:0.4...

ongeveer 2 maanden ago | 0

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Matlab code for extract shape features from an image including circle and rectangle
Just binarize the image A = imread('5C54390E-80C8-47DD-9293-822E85D06145.jpeg'); A1 = im2bw(A); L = bwlabel(~A1); ...

ongeveer 2 maanden ago | 0

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