how can i draw a 2 columns (as a time first raw is from 0 to 20 this in x axis and in y axis is from the 3rd column) and the 3rd is category

, *note*(y axis is only three values(sil,Tr, NTr) and are repeated randomly)

as follow data:

Answer 1

[KSSV]

% Read the file 
file = "ex3data.txt" ; 
fid = fopen(file,'r') ; 
S = textscan(fid,'%f %f %s') ; 
fclose(fid) ; 
% Seperate each data 
S1 = S{:,1} ; 
S2 = S{:,2} ; 
S3 = S{:,3} ; 
str = unique(S3) ; 
C = {'r', 'g','b'} ; 
for i = 1:length(str)
  idx = strcmp(S3,str{i}) ; 
  bar(idx*i,'facecolor',C{i})
  hold on
end
legend(str)

You can explore the other plotting options.

[Manar Gbaily]

thanks so much but i need to know how you set the amplitude and i need to change it please of(sil=0.5, NTr=1, Tr=1)

and how you eleminate the numbers of column 1 and 2

many thanks again

[Manar Gbaily]

this is input and after each (.) its a new data put it in new figure

"*/Sp110101.lab" this is file name i need to draw each file in a figure

0 200000 sil -49.119217 (this is the first raw in the file i need to draw 0 200000 sil without -49.119217)

and thanks