Filter löschen
Filter löschen

Why do I receive this error while using a MATLAB help example?

3 Ansichten (letzte 30 Tage)
Sara Nikdel
Sara Nikdel am 26 Aug. 2022
Kommentiert: Sara Nikdel am 29 Aug. 2022
I am trying to do something similar to this MATLAB example that is provided in Help:
syms x y z
S = struct('f1',x*y,'f2',y + z,'f3',y^2)
S = struct with fields:
f1: x*y f2: y + z f3: y^2
Sval = subs(S,[x y z],[0.5 1 1.5])
Sval = struct with fields:
f1: 1/2 f2: 5/2 f3: 1
but I get this error:
"Error using subs
Expected input number 1, S, to be one of these types:
sym
Instead its type was struct.
Error in sym/subs (line 60)
validateattributes(F, {'sym'}, {}, 'subs', 'S', 1);"
What went wrong?
  2 Kommentare
Torsten
Torsten am 26 Aug. 2022
Bearbeitet: Torsten am 26 Aug. 2022
Seems your MATLAB version is an old one (see above).
Sara Nikdel
Sara Nikdel am 29 Aug. 2022
I updated my MATLAB and it works now, thank you.

Melden Sie sich an, um zu kommentieren.

Antworten (1)

Michael
Michael am 26 Aug. 2022
This ran fine on my machine. See below. What version of Matlab are you using? Maybe an older version that doesn't support struct inputs?
syms x y z
S = struct('f1',x*y,'f2',y + z,'f3',y^2)
S = struct with fields:
f1: x*y f2: y + z f3: y^2
Sval = subs(S,[x y z],[0.5 1 1.5])
Sval = struct with fields:
f1: 1/2 f2: 5/2 f3: 1

Kategorien

Mehr zu Error Functions finden Sie in Help Center und File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by