How to plot data points above and below the surface in a ternary plot in 3D?

Hello, I have a question. Is there a way to plot, in addition to the surface, some data points in 3 D and not in 2D in a ternary plot? And also to plot them in different colors according if they are below or above the surface ? I successed to plot the surface:

ternsurf(XA,XB,XC,f3);ternlabel('Trifluoperazine', 'Gemcitabine', 'Paclitaxel'); 
c = colorbar();

but I cannot plot data points in 3 D, the data points were plotted on the base of the ternary plot in 2 D with the command below (figure attached):

ternplot(XA, XB, XC,'marker', 'd','markerfacecolor','yellow','markersize',5); ternlabel('Trifluoperazine', 'Gemcitabine', 'Paclitaxel');

And I would like them in 3D, so I tried the commands below, but it does not work. Do you have an idea ?

    %%%%%%%%%points above the surface %%%%%%%%%%
    above=datacombinationall(C>Cf3,:) 

    Xabove=((above(:,1))./IC50A)./TT; 
    Yabove=((above(:,2))./IC50B)./TT; 
    Zabove=((above(:,3))./IC50C)./TT; 

    %%%%%%%%%points below the surface %%%%%%%%%%
    below=datacombinationall(C<Cf3,:) 

    Xbelow=((below(:,1))./IC50A)./TT; 
    Ybelow=((below(:,2))./IC50B)./TT; 
    Zbelow=((below(:,3))./IC50C)./TT; 
    % % 
    ternplot(Xabove, Yabove, Zabove, 'd','red'); ternlabel('TFP', 'GEM', 'PTX'); 
    hold on 
    ternplot(Xbelow, Ybelow, Zbelow, 'd','green'); ternlabel('TFP', 'GEM', 'PTX');

Yours sincerely,

Answer 1

[Faiz Gouri]

'ternplot' is ternary version of 'plot' command. You can plot 3d points using 'plot3' after creating the ternary axis with a 'ternsurf' command as follows: ternsurf(XA, XB, XC, f3); [x, y] = terncoords(XA, XB, XC); hold on; plot3(x, y, f3); hold off;

[Emilie M]

Thank you very much!

[Emilie M]

Hello, I have another question because it seems that the caculation of the surface is wrong with the ter n surf. I try with tersurf. Is it possible to plot some data points in 3D also with ternaryc function ?

My surface is defined :

[hg,htick,hcb]=tersurf(XA,XB,XC,f3);

and then I plot the points:

hold on
 [h,hg,htick]=terplot;
 colormap(jet)
 hter=ternaryc(XA,XB,XC);
set(hter,'marker','o','markerfacecolor','yellow','markersize',4)

Yours sincerely,