Why do I get "Argument to dynamic structure reference must evaluate to a valid field name" error please? code attached.

My code:

Nf= 471913097;
DI_year = (sum(ESAL_year)/Nf)*100;
DI_6months = (sum(ESAL_6months)/Nf)*100;
DI_3months = (sum(ESAL_3months)/Nf)*100;
DI_1month = (sum(ESAL_1month)/Nf)*100;
DI_2weeks = (sum(ESAL_2weeks)/Nf)*100;
DI_1week = (sum(ESAL_1week)/Nf)*100;

DI= [DI_year;DI_6months;DI_3months;DI_1month;DI_2weeks;DI_1week];
FC= (1/60)*(6000/(1+exp.(4.96711-2.48356.*log10(DI.*100))));

[madhan ravi]

you need to upload the data file

[MAHMOUD ALZIOUD]

I do no have data file, I have the variables as numbers, the ESAL values are constant values not file data, they are used to calculate the DI values, and then DI values are used in the equation of FC. so what data file do you mean?

[madhan ravi]

see my answer below

[MAHMOUD ALZIOUD]

I will try it now

Answer 1

[madhan ravi]

instead of

FC= (1/60)*(6000/(1+exp.(4.96711-2.48356.*log10(DI.*100))));
                       ^-------causes error
                        

should be

FC= (1/60)*(6000./(1+exp(4.96711-2.48356.*log10(DI.*100))));
                ^---------added dot here after sir Walters comment

[MAHMOUD ALZIOUD]

FC should give me 6 values because I have 6 values of DI, when I ran your code it gave one FC value which is for the last DI value, do you have any idea why?

[madhan ravi]

can you post the values of DI here so i can test it?

[Walter Roberson]

you have 6000/

Change that to 6000./

[madhan ravi]

Thank you sir Walter , @Mahmoud see edited answer now

[MAHMOUD ALZIOUD]

Yes I will do, Thank you for your help, and thanx to Mr Walter as usual

[madhan ravi]

Anytime :)