Hello,
I'm trying to plat a 3D arrow using the vectarrow function. I don't get any arrow messages but there is just now arrow in my plot. It would be great to get some tipps:)
My code is the following:
%50 J
[X1,Y1] = meshgrid(1:0.025:1.7,0.05:0.05:0.25);p00_1 = 1.289;p10_1 = -0.3693; p01_1 = 0.7187; p20_1 = 0.1467; p11_1 = -1.188; p02_1 = 1.188; colormap(flipud(jet));Z1 = p00_1 + p10_1.*X1 + p01_1.*Y1 + p20_1.*X1.^2 + p11_1.*X1.*Y1 + p02_1.*Y1.^2s1 = surf(X1,Y1,Z1,'FaceColor','interp','EdgeColor', 'none')colorbar;hold on;%Patch
Z2 = 0.9 + 0*X1 + 0*Y1s2 = surf(X1,Y1,Z2,'FaceColor','none','FaceAlpha',1.0,'EdgeColor','none')v = [1.7 0.05 0.9; 1.7 0.1689 0.9; 1 0.05 0.9; 1.3909 0.25 0.9 ; 1 0.25 0.9; 1 0.05 0.9];f = [1 2 3 4 5 6];p = patch('Faces',f,'Vertices',v,'FaceColor',[17 17 17]/30,'FaceAlpha',1.0,'EdgeColor','k','LineWidth',0.5);zdiff = Z1 - Z2;C = contours(X1, Y1, zdiff, [0 0]);% Extract the x- and y-locations from the contour matrix C.
xL = C(1, 2:end);yL = C(2, 2:end);% Interpolate on the first surface to find z-locations for the intersection line.
zL = interp2(X1, Y1, Z1, xL, yL);% Visualize the line.
line(xL, yL, zL, 'Color', 'k', 'LineWidth', 1.0);% Label axes
xlabel( 'f_{u}/f_{y}');ylabel([char(949) '_{u}']);zlabel( 'F_{max}/F_{soll}');xlim([1 1.7])ylim([0.05 0.25])zlim([0.0 1.1])grid ontitle('S355 LP=0 KV=100J')v = [0.9 0.9]%contour(X1,Y1,Z1,v)
M1 = contour(X1,Y1,Z1,v,'red','LineWidth',2.0)%Achsenrichtung
view(axes1,[124.8 23.8]);grid(axes1,'on');hold(axes1,'off');set(gca,'xticklabel',num2str(get(gca,'xtick')','%.2f'))set(gca,'yticklabel',num2str(get(gca,'ytick')','%.2f'))set(gca,'zticklabel',num2str(get(gca,'ztick')','%.2f')function vectarrow(p0,p1)%Arrowline 3-D vector plot.
% vectarrow(p0,p1) plots a line vector with arrow pointing from point p0
% to point p1. The function can plot both 2D and 3D vector with arrow
% depending on the dimension of the input
%
% Example:
% 3D vector
p0 = [1.7 0.16 0.9]; % Coordinate of the first point p0
p1 = [1.7 0.16 0.0]; % Coordinate of the second point p1
vectarrow(p0,p1) if max(size(p0))==3 if max(size(p1))==3 x0 = p0(1); y0 = p0(2); z0 = p0(3); x1 = p1(1); y1 = p1(2); z1 = p1(3); plot3([x0;x1],[y0;y1],[z0;z1]); % Draw a line between p0 and p1
p = p1-p0; alpha = 0.1; % Size of arrow head relative to the length of the vector
beta = 0.1; % Width of the base of the arrow head relative to the length
hu = [x1-alpha*(p(1)+beta*(p(2)+eps)); x1; x1-alpha*(p(1)-beta*(p(2)+eps))]; hv = [y1-alpha*(p(2)-beta*(p(1)+eps)); y1; y1-alpha*(p(2)+beta*(p(1)+eps))]; hw = [z1-alpha*p(3);z1;z1-alpha*p(3)]; hold on plot3(hu(:),hv(:),hw(:)) % Plot arrow head
grid on xlabel('x') ylabel('y') zlabel('z') hold off else error('p0 and p1 must have the same dimension') end elseif max(size(p0))==2 if max(size(p1))==2 x0 = p0(1); y0 = p0(2); x1 = p1(1); y1 = p1(2); plot([x0;x1],[y0;y1]); % Draw a line between p0 and p1 p = p1-p0; alpha = 0.1; % Size of arrow head relative to the length of the vector beta = 0.1; % Width of the base of the arrow head relative to the length hu = [x1-alpha*(p(1)+beta*(p(2)+eps)); x1; x1-alpha*(p(1)-beta*(p(2)+eps))]; hv = [y1-alpha*(p(2)-beta*(p(1)+eps)); y1; y1-alpha*(p(2)+beta*(p(1)+eps))]; hold on plot(hu(:),hv(:)) % Plot arrow head grid on xlabel('x') ylabel('y') hold off else error('p0 and p1 must have the same dimension') end else error('this function only accepts 2D or 3D vector') endend
Best Answer