start for loop from non zero value

Hi I am trying to run the code below for "number_panels" going from 1000 to 2000 with a step interval of 500. The below doesn't seem to work and was wondering if anyone knows how to modify this to get the required

my code is

 number_of_days = 2;

    for number_panels = 1000:500:2000 % range of PV panel units examined

    for number_turbines = 0:1:3  % range of wind turbine units examined

        for h=1:24 %# hours

           for d = 1:number_of_days %# which day

                n = h + 24*(d-1);
                % hourly_deficit_1(...,..., h, d)= Demand(n)-(PV_supply(n)... %

                hourly_deficit(number_panels + 1, number_turbines + 1, h,d) = hourly_annual_demand(n) - (hourly_annual_PV(n)*number_panels) - (hourly_annual_WT(n)*number_turbines);% hourly power deficit (RES supply with demand)

                if hourly_deficit(number_panels + 1, number_turbines + 1, h,d)< 0 % zero out negative hourly deficit values (this is power surplus from RES)

                    hourly_deficit(number_panels + 1, number_turbines + 1, h,d) = 0;

                end

As it stands i am getting size(hourly_deficit) = 2001 4 24 2

whereas I am expecting 3 4 24 2

Answer 1

[Doug Hull]

look at the value of number_panels on the very first time through the loops:

hourly_deficit(number_panels + 1, number_turbines + 1, h,d) =

or

hourly_deficit(1000 + 1), ...)

and on last time through:

hourly_defisit(2000 + 1), ...)

Similar things happen on the other indicies.

Maybe you want to have a iii = 0; outside the loop, and then

iii = iii+1;

inside the outer loop and index with it?

hourly_deficit(iii,...)

Answer 2

[Walter Roberson]

panel_vals = 1000:500:2000;
for panel_number = 1 : length(panel_vals)
  number_panels = panel_vals(panel_number);
  [...]
  hourly_deficit(panel_number, number_turbines + 1, h,d) = hourly_annual_demand(n) - (hourly_annual_PV(n)*number_panels) - (hourly_annual_WT(n)*number_turbines)

I am guessing here that the multiplication by number_panels should be the 1000, 1500, etc., the value rather than the index.