Plotting 3D graph in a plane

kagohaik — Sun, 12 Oct 2008 01:45:43 -0400

I am new in matlab and I would like to plot a 3D graph in a 2D graph.
The x and y axis are representing the independent variables. There are only two values for the dependent variables, which are 2,3, in which I would like to represent it with different symbols in the 2D graph. How am I going about doing this?

Thanks in advance.

Re: Plotting 3D graph in a plane

Walter Roberson — Sun, 12 Oct 2008 04:51:36 -0400

kagohaik wrote:
> I am new in matlab and I would like to plot a 3D graph in a 2D graph.
> The x and y axis are representing the independent variables. There are only two values
> for the dependent variables, which are 2,3, in which I would like to represent it with
> different symbols in the 2D graph. How am I going about doing this?

I suggest using scatter(). It would be easier to use different colors rather than different
symbols, but here is how you can do it using different symbols:

xt = x;
xt(z~=2) = nan;
scatter(xt,y,SymbolSize,'o'); %'o' marker for first value
xt = x;
xt(z~=3) = nan;
scatter(xt,y,SymbolSize,'+') %'+' marker for second value

If you add the color information you can obviously generalize this to as many
distinctive colour / marker combinations as you can come up with (though
if you were to get into that, you'd -probably- be wanting to use value ranges
rather than exact comparisons)

xt = x;
xt(abs(z-7.2) > 4*eps(7.2)) = nan; %preserve only values really close to 7.2

MATLAB Central Newsreader - Plotting 3D graph in a plane

Plotting 3D graph in a plane

Re: Plotting 3D graph in a plane