How do i using scatter plot in matlab to plot 2D or 3D data with new labels ?

Dear experiences

i have a dataset stored in an excel file, where data has labels from A1..An as in the following:

states    Dim1             Dim2        part
 A27  0.000961859  0.030987232      1
 A127  0.015515794  0.047256875      1
 A34  0.063094311  -0.188401909     2
 A47  0.069889903  -0.162175315     2
 A12  -0.351944163  -0.092892019     3
 A112  0.108680014  -0.297203971     4

My questions are :

1. How i can using scatter plot in matlab to plot the above labels as in the attached figure?
2. Is there any option to plot every collection of points with distinct color like ( part1=black, part2=red, etc. )?
3. fianlly, i need to create labels for every collection, my labels are part1, part2, part3, part4) based on my dataset, so i hope to this property can be performed based on Dim1 and Dim2 values range.

thanks for any suggestion.

[KSSV]

What is the criteria to divide Ai's into various parts?

[ahmed obaid]

its represented similar groups of states (clustered data).

[KSSV]

Then do you have these Ai's separately for each cluster?

[ahmed obaid]

Yes, i have it.. but i would like to plotting it according to its x,y values..

Answer 1

[Star Strider]

This will get you started:

[D,S] = xlsread( . . . );
D = [-0.005859903  0.003131757
    -0.009648814  0.001774854
    -0.006499227  0.003332951
    -0.007080218  0.00482714];
S = {'A1'
     'A2'
     'A3'
     'A4'};

figure(1)
text(D(:,1), D(:,2), S, 'FontSize',8)
axis([min(D(:,1))  max(D(:,1))    min(D(:,2))  max(D(:,2))])

[ahmed obaid]

Very good point, i have modified my question also,now i created a new columns contain the labels for my data, so how to plot points in similar part with color differ from other part, where part is a columns can contain any values. thanks

[Star Strider]

Rather than rewrite the data, I added a couple points and changed the code to provide different coloured markers for the various values of ‘part’.

This works:

D = [-0.005859903  0.003131757  1
    -0.009648814  0.001774854  2
    -0.006499227  0.003332951  3
    -0.007080218  0.00482714   4
    -0.351944163   -0.092892019  3
     0.108680014   -0.297203971  4];
S = {'A1'
     'A2'
     'A3'
     'A4'
     'A12'
     'A112'};

figure(1)
hs = scatter(D(:,1), D(:,2), 50, D(:,3), 'filled')
text(D(:,1)+0.001, D(:,2), S, 'FontSize',7, 'HorizontalAlignment','left')
set(hs, 'Marker', 's')
axis([min(D(:,1))-0.001  max(D(:,1))+0.001    min(D(:,2))-0.001  max(D(:,2))+0.001])

You will have to experiment to get the results you want with your data.