Unable to convert 'sym' value to 'double'. after using solve

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Christian Fokdal
Christian Fokdal 2018-10-10
评论： Christian Fokdal 2018-10-11
syms DELTA_2 DELTA_CR tcr;
assume(2>tcr>0); tcr=sqrt((4*H)/(OMEGA*Pm))*(DELTA_CR - DELTA_0);
if M==Z fprintf('%.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f \n' ,T, DELTA_0deg, OMEGA, DELTA_1deg, solxdeg, DELTA_3deg, solydeg, tcr) end
-----
Error using fprintf
Unable to convert 'sym' value to 'double'.
---
error for tcr

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回答（1 个）

gonzalo Mier
gonzalo Mier 2018-10-10
I have not much info with this... but, I guess tcr = constant * (DELTA_CR - constant). That means tcr doesn't have a double value because it depends on DELTA_CR. Try to print tcr before fprintf, and if is not that, give more info please
  1 个评论
Christian Fokdal
Christian Fokdal 2018-10-11
https://se.mathworks.com/matlabcentral/answers/423228-error-using-fprintf-unable-to-convert-sym-value-to-double-error-in-sym-double-line-665-xstr
nobody seemd to anwser the long post so I made a shorter one. The one above has the entire code.

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