Pcolor Plot for 50,000 values

Let me try to put it this way:

I have 50,000 particles in a 2-D box. After I do my simulation, I get that some of the particles swirl around each other and kind of form a vortex type structure.

So now I have 50,000 x-cordinate(x), y-cordinate(y) and 50,000 value of x-velocity(vx) and y-velocity(vy).

What I want is to plot this data in such a way that it should show the vortex with arrows representing the direction of velocity.

Also it should have a colorbar.

One of my friend said that it can be plotted using pcolor and the arrows can be shown using quiver plot.

I need high quality image

Can anyone help, thank you!

[Image Analyst]

Probably but you forgot to attach your data so no one can try anything for you.

[Adam Danz]

Decent starting point:

https://www.mathworks.com/help/matlab/vector-fields.html?s_tid=CRUX_lftnav

[Alakesh Upadhyaya]

The data is too big but here I will attach a mat.file, the 3rd and 4th coulumn are x and y positions and 5th and 6th coloumn are x and y component of velocity.

[KSSV]

Unable to load the file.

Have a look on this file exchange function: https://in.mathworks.com/matlabcentral/fileexchange/3225-quiverc

[Alakesh Upadhyaya]

let's just say I ahve 50000 partcles in a 100 x 100 box,

box=100;

x=box*randn(50000,1); x-positions

y=box*randn(50000,1); y-positions

vx=randn(50000,1); x-velocity

vy=randn(50000,1); y-velocity

how do I pcolor plot these with arrows showing the direction of the particles

[Walter Roberson]

The file turns out to be a text file that has been named with the .mat extension.

Answer 1

[Walter Roberson]

https://www.mathworks.com/matlabcentral/fileexchange/38856-quiver-plot-for-scattered-data