基于MATLAB实现的在流场中和电磁场中有必要画出箭头图来进一步显示清楚+使用说明文档.zip

% Plot 3D quiver % 流体场或电磁场 figure (3) hold on % quiver3(xx,yy,zz,Ax,Ay,Az,1,'b-') % quiver3 % % % 3-D quiver or velocity plot % % % % % GUI Alternatives % % % To graph selected variables, use the Plot Selector in the Workspace Browser, or use the Figure Palette Plot Catalog. Manipulate graphs in plot edit mode with the Property Editor. For details, see Plotting Tools — Interactive Plotting in the MATLAB Graphics documentation and Creating Graphics from the Workspace Browser in the MATLAB Desktop Tools documentation. % Syntax % quiver3(x,y,z,u,v,w) % quiver3(z,u,v,w) % quiver3(...,scale) % quiver3(...,LineSpec) % quiver3(...,LineSpec,'filled') % quiver3(axes_handle,...) % h = quiver3(...) % Description % % % A three-dimensional quiver plot displays vectors with components (u,v,w) at the points (x,y,z), where u,v,w,x,y, and z all have real (non-complex) values. % % quiver3(x,y,z,u,v,w) plots vectors with components (u,v,w) at the points (x,y,z). The matrices x,y,z,u,v,w must all be the same size and contain the corresponding position and vector components. % % quiver3(z,u,v,w) plots the vectors at the equally spaced surface points specified by matrix z. quiver3 automatically scales the vectors based on the distance between them to prevent them from overlapping. % % quiver3(...,scale) automatically scales the vectors to prevent them from overlapping, and then multiplies them by scale. scale = 2 doubles their relative length, and scale = 0.5 halves them. Use scale = 0 to plot the vectors without the automatic scaling. % % quiver3(...,LineSpec) specifies line type and color using any valid LineSpec. % % quiver3(...,LineSpec,'filled') fills markers specified by LineSpec. % % quiver3(axes_handle,...) plots into the axes with the handle axes_handle instead of into the current axes (gca). % % h = quiver3(...) returns a vector of line handles. % % Plot the surface normals of the function . [X,Y] = meshgrid(-2:0.25:2,-1:0.2:1); Z = X.* exp(-X.^2 - Y.^2); [U,V,W] = surfnorm(X,Y,Z); quiver3(X,Y,Z,U,V,W,0.5); hold on surf(X,Y,Z); colormap hsv view(-35,45) axis ([-2 2 -1 1 -.6 .6]) hold off % Examples % Plot the surface normals of the function . [X,Y] = meshgrid(-2:0.25:2,-1:0.2:1); Z = X.* exp(-X.^2 - Y.^2); [U,V,W] = surfnorm(X,Y,Z); quiver3(X,Y,Z,U,V,W,0.5); hold on surf(X,Y,Z); colormap hsv view(-35,45) axis ([-2 2 -1 1 -.6 .6]) hold off