Quiver plot - vector direction
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Hi,
I am trying to plot quiver plot of 2d data and the generated quiver plot is not pointing in the direction of second dataset (x2,y2) from first dataset (x1,y1). Please let me the error I am committing in displaying the plot.
Thanks,
Vignesh
x1 = [5 5.5 6 6.5 7 7 7 6.5 6 5.5 5 5 5 ];
y1= [5 5 5 5 5 5.5 6 6 6 6 6 5.5 5];
plot (x1,y1)
hold on
xlim([-20 20])
ylim([-20 20])
x2 = [4.19 5.26 6.00 6.74 7.81 7.96 7.81 6.74 6.00 5.26 4.19 4.04 4.19];
y2 = [4.19 4.05 4.08 4.05 4.19 5.50 6.81 6.95 6.92 6.95 6.81 5.50 4.19];
plot(x2,y2)
hold on
quiver(x1,y1,x2,y2)
采纳的回答
Your U and V values are all positive, so all quivers will point up and to the right.
I think you want U and V to be the difference between 2 and 1, and not the location of 2.
x1 = [5 5.5 6 6.5 7 7 7 6.5 6 5.5 5 5 5 ];
y1= [5 5 5 5 5 5.5 6 6 6 6 6 5.5 5];
plot (x1,y1)
hold on
x2 = [4.19 5.26 6.00 6.74 7.81 7.96 7.81 6.74 6.00 5.26 4.19 4.04 4.19];
y2 = [4.19 4.05 4.08 4.05 4.19 5.50 6.81 6.95 6.92 6.95 6.81 5.50 4.19];
plot(x2,y2)
quiver(x1, y1,x2-x1,y2-y1)
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