Switch does not work in GUI
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While running my code through a GUI the SWITCH function does that detect the cases, or maybe it just jumps to the bottom otherwise every time.
contents = cellstr(get(S.element,'String'));
t1 = contents{get(S.element,'Value')};
t = char(t1);
contents = cellstr(get(S.mass,'String'));
u1 = contents{get(S.mass,'Value')};
u = char(u1);
contents = cellstr(get(S.volume,'String'));
v1 = contents{get(S.volume,'Value')};
v = char(v1);
global dens
switch t
case strcmp(t,'Scandium')
dens = 2.989;
case strcmp(t,'Yttrium')
dens = 4.469;
case strcmp(t,'Selenium')
dens = 4.809;
case strcmp(t,'Krypton')
dens = .003733;
case strcmp(t,'Neodymium')
dens = 7.007;
case strcmp(t,'Antimony')
dens = 6.685;
case strcmp(t,'Astatine')
dens = 7;
otherwise
dens = 8.55;
end
Every time it jumps to the other wise option of -- dens = 8.55.
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Akzeptierte Antwort
Walter Roberson
am 9 Nov. 2012
You need to convert
switch t
to
switch true
because the value that you give in the "switch" is compared to the values of the "case" statements, and the values of the case statements are the result of the strcmp() and hence are true or false.
Alternately, leave it as "switch t" and remove the strcmp()
case 'Yttrium'
1 Kommentar
Walter Roberson
am 10 Nov. 2012
Bearbeitet: Walter Roberson
am 10 Nov. 2012
Consider this:
densities = struct('scandium', 2.989', 'yttrium', 4.469, 'selenium', 4.809);
tl = lower(t);
if isfield(densities,tl)
dens = densities.(tl);
else
error('not a known element')
end
Weitere Antworten (2)
Image Analyst
am 10 Nov. 2012
Try it like this:
switch lower(t)
case 'scandium'
dens = 2.989;
case 'yttrium'
dens = 4.469;
case 'selenium'
dens = 4.809;
case 'krypton'
dens = .003733;
case 'neodymium'
dens = 7.007;
case 'antimony'
dens = 6.685;
case 'astatine'
dens = 7;
otherwise
dens = 8.55;
end
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