here is my codes and erors, I don't know what this erors mean ?

Erors

Undefined function or variable "Current_time_actual_load".

Error in obtain_current_week_data_dt>obatin_current_week_actual_load_data (line 64) Current_week_actual_load_data(1,1)=Current_time_actual_load;

Error in obtain_current_week_data_dt (line 10) [actual_load_data]=obatin_current_week_actual_load_data(load_time_stamp,load_value,current_week_time_stamps);

Error in Main_dt (line 20) [Current_week_actual_load_data,Current_week_predictions]=obtain_current_week_data_dt(Week_number,Weekly_time_stamps,load_time_stamp,load_value); >>

and Codes

line 52 to 64 >> obtain_current_week_data_dt :

for i=1:length(load_time_stamp)

    idx = strcmp([load_time_stamp{i}], Formated_string);

    ck=5;

    if isequal(idx,1),

        Current_time_actual_load=load_value(i);

        load_time_stamp(1:i)=[];

        load_value(1:i)=[];

        break

    end

end

Current_week_actual_load_data(1,1)=Current_time_actual_load;

line 10 >> obtain_current_week_data-dt :

[actual_load_data]=obatin_current_week_actual_load_data(load_time_stamp,load_value,current_week_time_stamps);

line 20 >> Main_dt

[Current_week_actual_load_data,Current_week_predictions]=obtain_current_week_data_dt(Week_number,Weekly_time_stamps,load_time_stamp,load_value);

I have also attached erors and codes to question by image , you can see them there.

[Kai Domhardt]

Current_time_actual_load is defined in line 57, which only gets executed if the statement in line 56

isequal(idx,1)

evaluates to true.

The inital assumption is that your error occurs, when the statement always evaluates to false.

You should probably examine your code before line 56 and see if it is possible for the statement to never be true, within a single function call, thus resulting in Current_time_actual_load never being defined.

Answer 1

[Torsten]

Seems you don't initialize the variable "Current_time_actual_load" before the if-condition (if isequal(idx,1)).

Since idx does not seem to be equal to 1, the command

Current_week_actual_load_data(1,1)=Current_time_actual_load;

tries to assign a value to "Current_week_actual_load_data(1,1)" that is undefined.

Best wishes

Torsten.