how i can connect equal point to gather of 2 separated graph on same figure

 i want to know how to connect equal data point to gather of 2 separated graph on same figure

[Walter Roberson]

duplicate is at http://www.mathworks.co.uk/matlabcentral/answers/58008-how-i-can-add-point-to-mesh-plot-and-connect-it-with-mesh-surface

Answer 1

[Image Analyst]

Not sure what "connect" means to you, but how about using the line() function?

[mansour]

a=[8.5319; 5.8468; 1.9691; 1.3863; -2.5172; 2.7046] F=a(1)+a(2)*X+a(3)*Y+a(4)*X.^2+a(5)*X.*Y+a(6)*Y.^2; x1=-1:.01:1; y1=-2:.01:2; [X,Y]=meshgrid(x1,y1);%data points

z=[7.87 18.36 2.94 12.43 14.30 9.76... 20.26 13.83 14.81 22.76 5.82 6.41... 18.63 15.10 14.30]';

%x vector

x=[.39 .28 -.37 -.55 .12 .77... .99 .13 -.93 -.27 -.96 -.35... .50 .37 .66]';

%y-vector

y=[-.48 -1.91 -.2 .18 -1.25 -.17... .83 -1.82 1.54 1.87 .19 -1.61... -1.23 -1.33 1.02]';

mesh(X,Y,F)

hidden off

hold on

plot3(x,y,b,'*','MarkerSize',10)

[mansour]

above code generate mesh plot and data on same figure i want to connect data with mesh surface, is it clear ???

[Image Analyst]

This code doesn't run, even after fixing about 10 things. Please paste code that I can simply copy, paste, and run.

[mansour]

a=[8.5319; 5.8468; 1.9691; 1.3863; -2.5172; 2.7046]

x1=-1:.01:1;

y1=-2:.01:2;

[X,Y]=meshgrid(x1,y1);

F=a(1)+a(2)*X+a(3)*Y+a(4)*X.^2+a(5)*X.*Y+a(6)*Y.^2;

%data points

b=[7.87 18.36 2.94 12.43 14.30 9.76 20.26 13.83 14.81 22.76 5.82 6.41 18.63 15.10 14.30]';

%x vector

x=[.39 .28 -.37 -.55 .12 .77 .99 .13 -.93 -.27 -.96 -.35 .50 .37 .66]';

%y-vector

y=[-.48 -1.91 -.2 .18 -1.25 -.17 .83 -1.82 1.54 1.87 .19 -1.61 -1.23 -1.33 1.02]';

mesh(X,Y,F)

hidden off

hold on

plot3(x,y,b,'*','MarkerSize',10)

[mansour]

is it ok?

[Image Analyst]

Yes, it runs now, though you can just paste your code in, highlight it, and click {}Code icon. You don't need to double space the lines if you do that.

But I still don't know what "connect equal data point to gather of 2 separated graph" means. I thought there was going to be 2 graphs, not 1. And I still don't know what connect means. Would line() work? And do you mean "gather" (it means to collect into a group), or does "to gather" really mean together (like joined or linked to each other)? And how do you define "equal"?

[mansour]

my code generate mesh surface and data point ('*') in same figure i need to connect data point with its equal in mesh surface to appear like stems connect data point('*') with surface

[mansour]

http://www.mathworks.com/matlabcentral/fx_files/12395/4/thumbnail.jpg

see this pic as example

[mansour]

http://www.google.jo/imgres?um=1&hl=en&client=firefox-a&tbo=d&rls=org.mozilla:en-US:official&channel=fflb&noj=1&tbm=isch&tbnid=cZ4x4-U4W6L_5M:&imgrefurl=http://www.mathworks.com/matlabcentral/fileexchange/12395&docid=tR3mPk-vbk5zwM&imgurl=http://www.mathworks.com/matlabcentral/fx_files/12395/4/plane3D.PNG&w=1201&h=901&ei=R4LoUL2jGOOx0AXKg4G4Bg&zoom=1&iact=rc&dur=334&sig=103568397953449674434&page=1&tbnh=146&tbnw=188&start=0&ndsp=34&ved=1t:429,r:0,s:0,i:85&tx=95&ty=54&biw=1280&bih=671

[mansour]

waiting yours response

[Image Analyst]

OK. Like I said, line() should do it. For each x,y coordinate, you call

line([xMesh, xData], [yMesh, yData], [zMesh, zData]);