Problems with nested indexing
34 views (last 30 days)
Show older comments
Hello,
I'm using a MATLAB algorithm to project and size the components of a vehicular suspension system.
In the following lines, an error is happening:
syms a2 b2
eq3=a2*Xmse+b2-Ymse;
eq4=a2*Xes+b2-Yes;
S2=solve(eq3,eq4);
a2=S2.a2(1);
b2=S2.b2(1);
OBS: the variables Xmse, Ymse, Xes and Yes are all real numbers.
This is the error that is happening every time I run the algorithm:
" Error using sym/subsref (line 747)
SYM objects do not allow nested indexing. Assign intermediate values to variables instead.
Error in projeto_de_suspensao (line 136)
a2=S2.a2(1); "
I don't know how to fix it. Can you help me?
Thanks for the support
2 Comments
Walter Roberson
on 23 Mar 2019
Which MATLAB release are you using? I do not get that error.
The message you are getting is what you would get if the result of the solve() were a single symbolic expression rather than a structure of results. You would get a single result if eq4 somehow ended up being a scalar symbolic variable name
Answers (1)
madhan ravi
on 14 Mar 2019
Edited: madhan ravi
on 23 Mar 2019
Remove (1) from the last two lines.
1 Comment
madhan ravi
on 14 Mar 2019
Edited: madhan ravi
on 14 Mar 2019
Alternative:
[a2,b2]=solve(eq3,eq4,[a2,b2])
See Also
Categories
Find more on Symbolic Math Toolbox in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!