Problem stataments in Matlab
15 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
ka chun yick
il 12 Mag 2022
Risposto: Dyuman Joshi
il 19 Mag 2022
Hi,
I would like to make a problem statement in Matalb, here are 3 columns, the 1st column is the user ID, the 2nd is (A/B) and 3rd is the combinations of $ and NIC.
(1) I wanted to count (a) how many many times $ has been pressed in total (b) count multiple $ as once pressed only by each user and total number of it.
(2) And in column 2, i wanted to check how many times the NIC has been pressed before $ pressed (so, 1st pressed: NIC, 2nd pressed: $) and count the total number of users.
I haven't used the Matalb for so long, so i would like to know how to do it...
Tim
0 Commenti
Risposta accettata
Dyuman Joshi
il 19 Mag 2022
Final answer, I have tested this code on my laptop
cd=0; %counting $
userd=[];
for i=1:size(T,1)
if isequal(char(T.Column2(i)),'$')
cd=cd+1; %number of '$' has been pressed.
userd=[userd char(T.Column1(i))];
end
end
uniqued=numel(unique(userd))
cnic=0; %counting NIC before $
usernic=[];
for j=1:size(T,1)-1
if isequal(char(T.Column2(j)),'NIC')&isequal(char(T.Column2(j+1)),'$')
cnic=cnic+1;
usernic=[usernic char(T.Column1(j))];
end
end
uniquenic=numel(unique(usernic))
0 Commenti
Più risposte (3)
Dyuman Joshi
il 12 Mag 2022
Modificato: Dyuman Joshi
il 13 Mag 2022
I'm assuming that the data in Column 1 and Column 2 is char/strings.
%T is your table
cd=0; %counting $
userd=[];
for i=1:size(T,1)
if isequal(T.Column2(i),'$')
countd=countd+1; %number of '$' has been pressed.
userd=[userd T.Column1(i)];
end
end
uniqued=numel(unique(userd));
cnic=0; %counting NIC before $
usernic=[];
for j=1:size(T,1)-1
if isequal(T.Column2(i),'NIC')&isequal(T.Column2(i+1),'$')
cnicbefd=cnicbefd+1;
usernic=[usernic T.Column1(i)];
end
end
uniquenic=numel(unique(usernic));
12 Commenti
ka chun yick
il 13 Mag 2022
4 Commenti
Dyuman Joshi
il 18 Mag 2022
This is just a data type mismatch in the if condition statement. Check what the data type in table T, then you can edit accorindingly as well.
Vedere anche
Categorie
Scopri di più su Spreadsheets in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!