How can i plot two columns in different colors in MATLAB

can someone suggest me how to plot 2nd and 3 rd column in x axis in differnt colors as scatter plot against the 1st column as y axis ?

[KSSV]

Why you want to plot dates?

[Jan]

Did you import the data already or is this a part of the problem?

[NN]

data is imported already

Answer 1

[Nora Khaled]

check out this code I wrote... is it what you want ?

%data colomns 
x={2,4,8,9,3};
a={'3:17:00 AM';'5:06:30 AM' ;'7:18:00 AM'; '10:30:30 AM' ;'9:19:00 AM'};
b={'3:17:00 PM';'5:06:30 PM' ;'7:18:00 PM'; '1:30:30 PM' ;'11:19:00 PM'};

%remove AM and PM 
a=cellfun(@(x) erase(x," AM"),a,'UniformOutput',false);
b=cellfun(@(x) erase(x," PM"),b,'UniformOutput',false);

%change time format to have double digit hours hh:mm:ss
inda=find(cellfun('size',a,2)==7);
indb=find(cellfun('size',b,2)==7);

a(inda,1)=strcat('0',a(inda,1));
b(indb,1)=strcat('0',b(indb,1));

%convert cells to arrays
x=cell2mat(x);
a=cell2mat(a);
b=cell2mat(b);

%convert string to time 
Time2plot_a =  datetime(a, 'inputformat','hh:mm:ss', 'Format','hh:mm:ss');
Time2plot_b =  datetime(b, 'inputformat','hh:mm:ss', 'Format','hh:mm:ss');


%plot 
scatter(Time2plot_a,x,'b.')
hold on 
scatter(Time2plot_b,x,'r.')
legend('AM','PM')

[NN]

thanks very much .It worked .