# Taking a string input and transferring it to a integer

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Jacob Belouin on 14 Oct 2021
Commented: DGM on 15 Oct 2021
I am trying to write a script to calculate the nominal kohms of a resistor. I need to create a menu of 10 colors and be able to assign those colors a number that I can use to create the final equasion. The numbers are integers ranging from 0 to 9 and there are three user selected inputs. Thanks in advance!
DGM on 14 Oct 2021
If you really insist on doing this with dialogs, you can use listdlg.
Otherwise, build a uifigure or something

DGM on 14 Oct 2021
Edited: DGM on 15 Oct 2021
Meh.
numbands = 4;
colornames = {'black','brown','red','orange','yellow','green','blue','violet','gray','white','gold','silver'};
tolerancemap = [1 2 0.5 0.25 0.1 0.05 5 1]; % in percent
multmap = [0:7 -1 -2];
digits = zeros(1,numbands-2);
for vb = 1:numbands
ps = sprintf('Color Band %d',vb);
if vb == numbands
%tol = listdlg('promptstring',ps,'selectionmode','single','liststring',colornames([2 3 6:9 11 12]));
tol = menu(ps,colornames([2 3 6:9 11 12]));
elseif vb == numbands-1
%multiplier = listdlg('promptstring',ps,'selectionmode','single','liststring',colornames([1:8 11 12]));
else
%digits(vb) = listdlg('promptstring',ps,'selectionmode','single','liststring',colornames);
end
end
value = str2double(sprintf('%d',digits-1)) * 10^multmap(multiplier);
tol = tolerancemap(tol);
if value >= 1E6
fprintf('The resistor value is %.2f Mohms, with a tolerance of %.2f%%\n',value/1E6,tol)
elseif value >= 1E3
fprintf('The resistor value is %.2f kohms, with a tolerance of %.2f%%\n',value/1E3,tol)
else
fprintf('The resistor value is %.2f ohms, with a tolerance of %.2f%%\n',value,tol)
end
Now you can add the tempco band too.
DGM on 15 Oct 2021
Augh. I didn't even think about literally using menu(). I never use interactive stuff, so i don't remember any of these things.
I edited to add example usage of menu in place of listdlg(). The indexing is basically the same.

R2021b

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