Below is a demonstration of the features of the quiverVec function
clear; close all; clc;
This function is a short-hand version of the quiver3Dpatch function which enables colormapped and 3D rendering of directional or vector data. The inputs are: P: The vector origins V: The vectors vecSize: The vector sizes colorSpec: The color data which is a string, rgb values or colormapped arrays edgeColorOpt: Edge coloring of the vector quiverStyleOpt: The quiver style, which is 1=normal arrow, 2=Arrive at origin, 3=Pass through origin, 4=Two-sided. alphaLevel: the transparancy level
clear; close all; clc;
Example for multidimensional image data: colormap driven vectors
Simulating 3D volume and vector data
n=15; [X,Y,Z]=meshgrid(linspace(-4.77,4.77,n)); phi=(1+sqrt(5))/2; M=2 - (cos(X + phi*Y) + cos(X - phi*Y) + cos(Y + phi*Z) + cos(Y - phi*Z) + cos(Z - phi*X) + cos(Z + phi*X)); [u,v,w] = gradient(M); %Vector components C=hypot(hypot(u(:),v(:)),w(:)); %Vector lenghts P=[X(:) Y(:) Z(:)]; V=[u(:) v(:) w(:)];
cFigure; quiverVec(P,V,C,C); colormap(cMap); colorbar; axisGeom(gca,fontSize); camlight headlight; lighting flat clim([1 3]) drawnow;
Example for face normal plotting with variable color
See also patchNormPlot
Creating a surface model
[F,V]=geoSphere(2,1); [N,Vn]=patchNormal(F,V); %Get face normals Cn=Vn(:,1); %Color data
cFigure; gpatch(F,V,'w','none'); quiverVec(Vn,N,0.5,Cn); colormap(cMap); colorbar; axisGeom(gca,fontSize); camlight headlight; drawnow;
Kevin Mattheus Moerman, [email protected]
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GIBBON: The Geometry and Image-based Bioengineering add-On. A toolbox for image segmentation, image-based modeling, meshing, and finite element analysis.
Copyright (C) 2006-2023 Kevin Mattheus Moerman and the GIBBON contributors
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