i have a problem in my code. I get data continous from an instrument. But at times i get a error message stated . what are the ways to overcome this error. I thought of TRY and Catch. Is it possible???

Index exceeds matrix dimensions.

Error in Battery_check_new (line 107) I_eLOAD(i,:) = str2double(Data_eLOAD_Stringsplit(3));

my code is i AM OPENING THE OBJECT AND GIVING THE SET POINT; THEN IT ENTERS THE LOOP while(exit) i=i+1; tic try fprintf(eLOAD_instr, 'curr %2f',Setpoint); % Setpoint to eLOAD pause(0.1);

    %%Get Data from ELR9000
    % Setpoint, Current, Voltage, Power

    Data_eLOAD_string               = query(eLOAD_instr, 'curr?; measure:current?; measure:voltage?; measure:power?');
    display('1');
    catch
        Display('2')
    end
    % Write Data_string in vector of type struct
    %Data_eLOAD_string_vec{i}    = Data_eLOAD_string;

    Data_eLOAD_Stringsplit          = strsplit(Data_eLOAD_string, {' ', ';'});
    I_set(i,:)                      = str2double(Data_eLOAD_Stringsplit(1));
    I_eLOAD(i,:)                    = str2double(Data_eLOAD_Stringsplit(3));
    U_eLOAD(i,:)                    = str2double(Data_eLOAD_Stringsplit(5));
    P_eLOAD(i,:)                    = str2double(Data_eLOAD_Stringsplit(7));
toc

end

How to use Try and catch command to overcome the error??? or any other possibility is there??