Formatting quiver() arrows

Hi all - I plotted a quiver arrow to join two points in my scatter plot and the formatting of this arrow is really important to get my task done. When I tried to, for example, format the LineStyle to '--' (dashed), the arrow head also became dashed. Is it possible to format the arrow stem only? I would like to format the arrow stem (dashed, etc) but maintaining the arrow head line style as solid line. Is this possible in any way?

Besides that, how do I choose the direction of the arrow in quiver plot?

Appreciate the help very much.

Answer 1

[Walter Roberson]

Yes, it turns out to be possible using undocumented properties.

h = quiver(...., 'LineStyle', '--')   %use the linestyle appropriate for the body
h.Head.LineStyle = 'solid';           %magic property, magic property value, notice this is not '-'

Answer 2

[José-Luis]

If you wanna go kosher:

 data = rand(10,4);

 qH = quiver(data(:,1),data(:,2),data(:,3),data(:,4),0);
 hold on
 qH1 = quiver(data(:,1),data(:,2),data(:,3),data(:,4),0);
 qH2 = quiver(data(:,1),data(:,2),data(:,3),data(:,4),0);
 colorVector = rand(1,3);

 qH.LineStyle = '-';
 qH.Color = colorVector;

 qH1.LineStyle = '-';
 qH1.Color = 'w';
 qH1.ShowArrowHead = 'off';

 qH2.LineStyle = '--';
 qH2.Color = colorVector;
 qH2.ShowArrowHead = 'off';