3D DATA evaluation, robot workspace

First: I want to import 4D data (.txt or .xls) to matlab and respresent data with scatter command. I have coordiantes x,y,z and paramter wich represent some value in 3d space. Do you have idea how to do that?

Second: I want to evaluate robot 3d workspace. Can you help me with that?

I have 3 axis robot with axis limitations ( q1=linspace (....)... and x,y,z coordinates in the tool center point.

So i want to sketch 3d workspace. Do you have any idea how to do that?

THANL YOU VERY MUCH

Answer 1

[Walter Roberson]

num = xlsread('YourFile.xlsx');
x = num(:,1);
y = num(:,2);
z = num(:,3);
V = num(:,4);
pointsize = 20;
scatter3(x, y, z, pointsize, V)

Please expand on what you mean by "evaluate robot 3d workspace" and "sketch 3d workspace". Can you post a link to a sample output?

[Matej]

Thank you

Something like that

http://pubs.sciepub.com/ajme/1/7/42/

https://engineerjau.files.wordpress.com/2013/07/dexterity-workspace.png

http://www.autonomousrobotsblog.com/grasping-with-robots-which-object-is-in-reach/

If i have invesrse kinematics and point x,y,z in the top of robot tool, i have also limitations of axis, i want to determine the workspace...