# how to choose the value?

5 views (last 30 days)
win on 14 May 2013
i have some data. see below if true
l1 = input('bus connection(choose one number from 1 to 30) = ');
bus1 = [2 3];
bus2 = [1 4 6 5];
bus3 = [1 4];
bus4 = [2 3 6 12];
bus5 = [2 7];
bus6 = [2 4 7 8 9 10 28];
bus7 = [5 6];
bus8 = [6 28];
bus9 = [6 10 11];
bus10 = [6 9 17 20 21 22];
bus11 = 9;
bus12 = [4 13 14 15 16];
bus13 = 12;
bus14 = [12 15];
bus15 = [12 14 18 23];
bus16 = [12 17];
bus17 = [16 10];
bus18 = [15 19];
bus19 = [18 20];
bus20 = [10 19];
bus21 = [10 22];
bus22 = [10 21 24];
bus23 = [15 24];
bus24 = [22 23 25];
bus25 = [24 26 27];
bus26 = 25;
bus27 = [25 28 29 30];
bus28 = [6 8 27];
bus29 = [27 30];
bus30 = [29 27];
end
when i press 1 it display bus1 matrix also when i press 2 it show bus2 matrix and bus3,bus4 etc., please anyone help me
Thomas on 14 May 2013
Goodwin, your code will not work as it is. I assume you want the user to input the number and then you want the corresponding bus matrix to show up..
Where do you compare what the user has entered to what you want to look up? you could do this by a number of 'if' statements (just think about it.. ) or use switch case..
win on 14 May 2013
thanks bro.........

Thomas on 14 May 2013
An example of how to use switch case: adapt for your particular case
busNum=input('Enter the bus number:');
switch busNum
case 1
disp('2 3')
case 2
disp('1 4 6 5')
end

Jan on 14 May 2013
Storing the values in different variables is a bad idea. Better use an array:
bus = {[2 3], ...
[1 4 6 5], ...
[1 4], ...
etc. };
l1 = input('bus connection(choose one number from 1 to 30) = ');
disp(bus{l1});
win on 14 May 2013
thanks bro...... i learned something here. thanks for all of you

Jurgen on 14 May 2013
I suggest you concatenate the numerical input l1 with the string 'bus'. Then display the content with display(). E.g.
X = ['bus' l1];
display(X)
Jurgen on 15 May 2013
Well it should work for this simple case?
José-Luis on 15 May 2013
It is not a matter of it working or not. Please look at this previous discussion.

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