how to plot cell ?

Question

Tomas 2013-11-12

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/105847-how-to-plot-cell

评论： Tomas 2013-11-12

I have for example cell {1x1 cell} {1x7 cell} {1x2 cell}, each cell is cluster.

I have to plot each cluster, how to plot together in one figure ?

Thanks

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Walter Roberson 2013-11-12

编辑：Walter Roberson 2013-11-12

What is the data structure inside the cells? For example is it an array of XYZ coordinates? Are you wanting to scatter3() based on the coordinates?

Tomas 2013-11-12

在 MATLAB Online 中打开

ans = Z{1}

[1x3 double]

ans = Z{2}

Columns 1 through 6
    [1x3 double]    [1x3 double]    [1x3 double]    [1x3 double]    [1x3 double]    [1x3 double]
Column 7
    [1x3 double]

ans = Z{3}

[1x3 double] [1x3 double]

I want to differentiate the color each Z{1} Z{2} Z{3}

Thanks

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Answer 1

Walter Roberson 2013-11-12

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/105847-how-to-plot-cell#answer_115006

在 MATLAB Online 中打开

pointsize = 10;
nclust = length(Z);
colorfrac = linspace(0, 1, nclust);
clustcoords = cellfun( @cell2mat, Z, 'Uniform', 0 );
for k = 1 : length(clustcoords)
  XYZ = clustcoords{k};
  scatter3(XYZ(:,1), XYZ(:,2), XYZ(:,3), pointsize, colorfrac(k));
  hold on
end

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Tomas 2013-11-12

在 MATLAB Online 中打开

i have to use plot3

this is my cod i want to plot Z

clear,clc

MON = [2.8 3.6 17.2; 5.4 8.3 15.8; 2.5 3.2 17.6; 9.9 10.7 13.6; 5.5 8.9 15.5; 9.7 11 13.9; 2.3 3.9 17.9; 5.7 8.1 15.1; 9.4 10.5 13; 9.9 13.2 13.7];

    [m,n]=size(MON)
    figure;
hold on
for k=1:size(MON,1)
      plot3(MON(k,1),MON(k,2),MON(k,3),'X')
end
    T=input('Zadaj počet typickych bodov :')%uzivatel zada koľko chce mať typickych bodov
       for i=1:T %Pociatocne typicke body
        TAZ=MON(1:T,:);
    end
    TAZ
    hold on
    for t=1:size(TAZ,1)
        plot3(TAZ(t,1),TAZ(t,2),TAZ(t,3),'kx','MarkerSize', 12, 'LineWidth', 2)
    end
     [r,s]=size(TAZ)%rozmery TAZ
     Z=cell(1,T)%vytvorenie zhlukov

z=1;

        for i=1:m
     for j=1:r
    B = MON(i,:);
    for k=1:size(B,1)
      plot3(B(k,1),B(k,2),B(k,3),'Oc')
end
    Z1(j)= euklid6(TAZ(j,:),B);%euklidovska vzdialenost
     end
      Z1
      minD = min([Z1]);%minimalna hodnota
      [i_min,j_min]=find(Z1==minD);%indexacia minimalnej hodnoty
      [e,f]=size(Z1);
      %postupne ukladanie podla prislusnosti objektu do zhlukov
      for h=1:f
          if (Z1(h) == Z1(j_min))
          Z{h}{z}=B;
          z=z+1;
          end
      end
     end
      Z;   
      d1=length(Z)
      for i=1:d1 %zmaze prazdne miesta v poli
          Z{i}(cellfun(@isempty,Z{i})) = [];
      end
      Z
    [z1,z2]=size(Z)
    Znew={};%nove pole 
      for j=1:z2
        S1(j)=sucet1(Z(j));
    end
    S1
S2=0; 
   iter=1;
   while (S1~=S2)
      [t1,t2]=size(Z);%rozmery Z
   for j=1:t2
   d(j,:)=tazisko6(Z(j));%vypocet noveho taziska
 end
   d

[x,y]=size(d)%rozmery d

   for k=1:size(d,1)
      plot3(d(k,1),d(k,2),d(k,3),'ro','MarkerSize', 12, 'LineWidth', 2')
end   
w=1;

for i=1:m for j=1:x

       B = MON(i,:);
   Z1(j)= euklid6(d(j,:),B);%euklidovska vzdialenost
     end
      Z1
       minD = min([Z1]);%minimalna hodnota
      [i_min,j_min]=find(Z1==minD);%indexacia minimalnej hodnoty
      [e,f]=size(Z1);%rozmery Z1
        %postupne ukladanie podla prislusnosti objektu do zhlukov
      for h=1:f
          if (Z1(h) == Z1(j_min))
          Znew{h}{w}=B;
          w=w+1;
          end
      end
     end
      Znew;
       d2=length(Znew);%zmeria dlzku pola
      for i=1:d2 %zmaze prazdne miesta v poli
          Znew{i}(cellfun(@isempty,Znew{i})) = [];
      end
      Znew;
      Z=Znew
      [b1,b2]=size(Z);
         for j=1:z2
        S2(j)=sucet1(Z(j));
    end
    S2
   iter=iter+1;
   hold on
   for w=size(TAZ,1)
   plot3([TAZ(w,1); d(w,1)],[TAZ(w,2); d(w,2)],[TAZ(w,3);d(w,3)],'-r')
   end
   end

function [d] = tazisko6(A) %% [d] = tazisko6(A) % % Tazisko jednotlivych zhlukov(centroid)

d1=length(A); d2 =length(A{1});

   s=0; 
   for i=1:d1
       for j=1:d2
           s=s+(A{i}{j});
       end
       if d2~=1
       d=s/d2;
       else
       d=s;
       end
   end
 function [ d] = euklid6( A,B )
%%[d] = euklid(A,B)
%
% Euklidovska vzdialenost bodov
[hA,tA]=size(A);
[hB,wB]=size(B);
if hA==1&hB==1
    d=sqrt(dot((A-B),(A-B)));
else
    C=[ones(1,hB);zeros(1,hB)];
    D=flipud(C);
    E=[ones(1,hA);zeros(1,hA)];
    F=flipud(E);
    G=A*C;
    H=A*D;
    I=B*E;
    J=B*F;
    d=sqrt((G-I').^2+(H-J').^2);
end

end

I should have everything in one plot, i dont know how to plot Z

Thanks

Walter Roberson 2013-11-12

在 MATLAB Online 中打开

nclust = length(Z);
thismap = copper(nclust);    %or pink or flag or hot or ...
clustcoords = cellfun( @cell2mat, Z, 'Uniform', 0 );
for k = 1 : length(clustcoords)
  XYZ = clustcoords{k};
  plot3(XYZ(:,1), XYZ(:,2), XYZ(:,3), thismap(k,:));
  hold on
end

Tomas 2013-11-12

??? Error using ==> plot3 Data must be a single matrix Y or a list of pairs X,Y

Error in ==> knew at 107 plot3(XYZ(:,1), XYZ(:,2), XYZ(:,3), thismap(k,:));

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how to plot cell ?

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