Converting 3D scatter plot into 2D plot?

Hello everybody,

I have a data include 10 column and more than 400000 row. I plot scatter3(x,y,z) to get 3D plot. Here x is the coordinate,y is the coordinate,z is the colour.

the function which i use to get x and y is:

x = sin(data.angle) .* data.Id

y = cos(data.angle) .* data.Id

z= data.load;

Now I want to convert my 3D plot into 2D without losing too much data. My 3D plot is kind of 4 pipe with different diameters and load (z) value is the colour is different in a each point of pipe. It is a bit difficult to explain, but hopefully you understood. If there is any suggestion to convert from 3D to 2D, i would be glad to hear.

[Rik]

What do you mean with losing data?

Do you want to interpolate to a grid in x and y and use z as color?

It would be really helpful if you would provide data or code to generate plausible data.

[Walter Roberson]

If z is the color then you can

scatter(x, y, POINTSIZE, z)