MATLAB: Rank the point in scatter3d figure with different color

colorrankscatter3

Dear everyone，

I want to draw a figure with 3-d data (x,y,values),and I want to rank the values then the different ranks value are with different color as you can see from figure2.

Anyone know the answer?Thanks in advance.

Hong Cheng

kwchenghong@gmail.com

Best Answer

Now I have find a easy and beautiful method to do this

 scatter3(locationX,locationY,RSSValue, 'CData',RSSValue);

just with 'CData',RSSValue parameters, we can do this

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MATLAB: How i can solve this problem? Pleas!

Your ‘T’ matrix must become a cell array. See my sample of ‘T’ for an example.

Once you do that, I would do something like this:

Y = [12.004
    13.1573 
    11.1665  
    11.8082    
    12.2129   
    12.8075   
    12.4167  
    11.5708   
    12.5798    
    13.7489];
T={'cluster2'; 'cluster1'; 'cluster3'; 'cluster9'; 'cluster0'; 'cluster7'; 'cluster4'}; % Sample Of Cell Array
[UnqClust,~,idx] = unique(T);                                                           % Unique Values & Locations
Out = Y(idx);                                                                           % Mapped Output
for k1 = 1:length(idx)
    fprintf(1, '\t%s\t%.4f\n', T{k1}, Out(k1))              % Demonstration Output (Delete Loop)
end
  cluster2  11.1665
  cluster1  13.1573
  cluster3  11.8082
  cluster9  12.4167
  cluster0  12.0040
  cluster7  12.8075
  cluster4  12.2129

MATLAB: With an xyzpoints plot, how to select points on a plane with a certain y-value? From the selection, is it possible to save it as a 2-D array

clc; clear all ;
% make a random data
x = rand(100,1) ; y = rand(100,1) ; z = rand(100,1) ;
% Pick y values of my interest/ get indices 
idx = find(y > 0.2 & y <0.5) ;
% seperate my values 
xi = x(idx) ;
yi = y(idx) ;
zi = z(idx) ;
plot3(x,y,z,'.r') ;
hold on
plot3(xi,yi,zi,'Ok')

In the above data is random, in your case as data is in plane, it shall be easy.

Best Answer

Related Solutions

MATLAB: How i can solve this problem? Pleas!

MATLAB: With an xyzpoints plot, how to select points on a plane with a certain y-value? From the selection, is it possible to save it as a 2-D array

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