How can make arrows into the line step by step?

if true
  % code
end

[madhan ravi]

Upload your input datas to test

Answer 1

[jonas]

What you see on the figure is a quiver3 plot, where the arrows describe velocity. You did not provide any velocity data, but you can make an arrow between every point in your plot as follows:

u = diff(x);
v = diff(y);
w = diff(z);
quiver3(x(1:end-1),y(1:end-1),z(1:end-1),u,v,w)

It is probably best to reduce the amount of data points, because you do not want 1500 arrows in your plot.

[Myo Gyi]

That is didn't show arrow sir...

[jonas]

Yes it does, if you zoom in you can see. You need to reduce the number of pts on your graph so that the arrows become larger

No need to accept the answer if it doesn't work for you. It is less likely someone else will post a solution if they think you are satisfies with an answer.

[Myo Gyi]

Yes Sir... Please give any suggestions sir.

[jonas]

see attached m-file. Note that the arrow size scales with the distance between the points. I don't know if you want them just for showing a direction or scale their size with something else, but you can adapt the code as needed.

[Myo Gyi]

Thank you very much sir... If I want to change the direction of arrow, how can I do that sir?

[jonas]

My pleasure!

The arrow direction and size is determined by w, v and u. Just set them all to negative and you get the opposite direction.

[Myo Gyi]

Yes Sir...Thanks

[Myo Gyi]

Hi jonas.. How can I make arrow to sart (0,0) point.

[jonas]

quiver3(0,0,0,u,v,w)

u,v,w determine direction of your arrow.

[Myo Gyi]

Thank you sir. But it is not show the arrow sir.

[jonas]

see attachment

[Myo Gyi]

Thank you sir... When I use this code, the x axis is 0 to 20 or 0 to 15 sir.I need the x axis is 0 to 10 sir. How can I do that? And then if I take the value of a = 0.02, the quiver3 is not working sir.. Help me please sir..

[jonas]

I don't understand. Quiver3 is really simple to use. The syntax is

quiver3(XStart, YStart, ZStart, XLength, YLength, ZLength,ScaleFactor)

then you can add various properties.

My code was just an example. Don't be afraid to actually change the values. If you want to change the range of the xaxis, then the syntax is.

set(gca,'xlim',[0 10])

What is a = 0.02?

[Myo Gyi]

par.a = 0.02 sir