give classes different marker colour and change fontsize of markers

Hey everyone,

I am trying to make a scoreplot in matlab. I used PLS so it would be wise to divide the data into several classes and give every class a different markercolour. But up till now I've only managed to fill the makers and change the colour of all markers. I would like to give the classes, N,O-synthetic,O-natural,C and Cl different colours. In addition, I would like to know what the fastest way is to change the size of the datapoint labels (=text) without changing the fontsize of the whole figure.

Thank you!

x =

   -0.0096
    0.0145
    0.0173
    0.0207
   -0.1068
   -0.0997
    0.0289
    0.0020
   -0.0033
    0.0002
    0.0177
    0.0216
    0.0380
    0.0249
    0.0270
    0.0162
    0.0136
    0.0348
    0.0487
    0.0301
   -0.0011
    0.0135
   -0.1698
    0.0207
    
 y =

   -0.0384
   -0.0137
   -0.0580
   -0.0660
    0.0253
   -0.0100
    0.0509
   -0.0396
   -0.0448
   -0.0243
   -0.0168
    0.0296
    0.0562
    0.0338
    0.0575
    0.0236
    0.0139
   -0.0071
    0.0810
    0.0121
   -0.0213
   -0.0457
    0.0345
   -0.0326

z =

   -0.0753
    0.0012
    0.0518
    0.0637
    0.0136
    0.0084
   -0.0384
   -0.0155
    0.0006
   -0.0187
    0.0123
   -0.0218
    0.0515
   -0.0284
   -0.0490
   -0.0410
   -0.0363
    0.0544
    0.0850
    0.0074
   -0.0988
    0.0126
    0.0306
    0.0302

names = 

  24×1 string array

    "ABS450"
    "BLITE450"
    "BW450"
    "CEL450"
    "CLPE450"
    "CP450"
    "HDPE450"
    "LATEX450"
    "LIG450"
    "NBR450"
    "NYL11450"
    "NYL66450"
    "PBMA450"
    "PC450"
    "PEEK450"
    "PET450"
    "PI450"
    "PLA450"
    "PMMA450"
    "PP450"
    "PS450"
    "PU450"
    "PVC450"
    "WS450"

class = 

  24×1 string array

    "N-polymer"
    "O-synthetic-polymer"
    "O-natural-polymer"
    "O-natural-polymer"
    "Cl-polymer"
    "Cl-polymer"
    "C-polymer"
    "C-polymer"
    "O-synthetic-polymer"
    "N-polymer"
    "N-polymer"
    "N-polymer"
    "O-synthetic-polymer"
    "O-synthetic-polymer"
    "O-synthetic-polymer"
    "C-polymer"
    "N-polymer"
    "O-synthetic-polymer"
    "O-synthetic-polymer"
    "C-polymer"
    "C-polymer"
    "N-polymer"
    "Cl-polymer"
    "O-natural polymer"
    
scatter3(x,y,z,'filled','MarkerFaceColor',[0 .75 .75]);
axis([-0.17 0.17 -0.1 0.1 -0.1 0.1]);
title('Score plot polymers 450 C');
xlabel('First Latent Variable');
ylabel('Second Latent Variable');
zlabel('third Latent Variable');
text(x,y,z,names);

[KSSV]

Read about gscatter

[Adam]

figure; scatter3( x, y, z, [], rand( 24, 3 ), 'filled' )

specifies a colour for each marker. All you need to do is create a colour vector of colours based on your class labels instead of random.

Answer 1

[KSSV]

x =[ -0.0096
    0.0145
    0.0173
    0.0207
   -0.1068
   -0.0997
    0.0289
    0.0020
   -0.0033
    0.0002
    0.0177
    0.0216
    0.0380
    0.0249
    0.0270
    0.0162
    0.0136
    0.0348
    0.0487
    0.0301
   -0.0011
    0.0135
   -0.1698
    0.0207] ; 
    
 y =[   -0.0384
   -0.0137
   -0.0580
   -0.0660
    0.0253
   -0.0100
    0.0509
   -0.0396
   -0.0448
   -0.0243
   -0.0168
    0.0296
    0.0562
    0.0338
    0.0575
    0.0236
    0.0139
   -0.0071
    0.0810
    0.0121
   -0.0213
   -0.0457
    0.0345
   -0.0326] ; 
z = [   -0.0753
    0.0012
    0.0518
    0.0637
    0.0136
    0.0084
   -0.0384
   -0.0155
    0.0006
   -0.0187
    0.0123
   -0.0218
    0.0515
   -0.0284
   -0.0490
   -0.0410
   -0.0363
    0.0544
    0.0850
    0.0074
   -0.0988
    0.0126
    0.0306
    0.0302] ; 
names = { "ABS450"
    "BLITE450"
    "BW450"
    "CEL450"
    "CLPE450"
    "CP450"
    "HDPE450"
    "LATEX450"
    "LIG450"
    "NBR450"
    "NYL11450"
    "NYL66450"
    "PBMA450"
    "PC450"
    "PEEK450"
    "PET450"
    "PI450"
    "PLA450"
    "PMMA450"
    "PP450"
    "PS450"
    "PU450"
    "PVC450"
    "WS450"} ; 
class = {"N-polymer"
    "O-synthetic-polymer"
    "O-natural-polymer"
    "O-natural-polymer"
    "Cl-polymer"
    "Cl-polymer"
    "C-polymer"
    "C-polymer"
    "O-synthetic-polymer"
    "N-polymer"
    "N-polymer"
    "N-polymer"
    "O-synthetic-polymer"
    "O-synthetic-polymer"
    "O-synthetic-polymer"
    "C-polymer"
    "N-polymer"
    "O-synthetic-polymer"
    "O-synthetic-polymer"
    "C-polymer"
    "C-polymer"
    "N-polymer"
    "Cl-polymer"
    "O-natural polymer"} ; 
    
% scatter3(x,y,z,'filled','MarkerFaceColor',[0 .75 .75]);
s = (1:length(x))*10 ; 
figure; scatter3( x, y, z, s, rand(length(x), 3 ), 'filled' )
axis([-0.17 0.17 -0.1 0.1 -0.1 0.1]);
title('Score plot polymers 450 C');
xlabel('First Latent Variable');
ylabel('Second Latent Variable');
zlabel('third Latent Variable');
text(x,y,z,names,'FontSize',12);

[Felix Flores James]

thank you!