Function read_demand_slices 

pub fn read_demand_slices(
    model_dir: &Path,
    svd_commodities: &HashMap<CommodityID, &'_ Commodity>,
    region_ids: &IndexSet<RegionID>,
    time_slice_info: &TimeSliceInfo,
) -> Result<HashMap<(CommodityID, RegionID, TimeSliceSelection), Dimensionless>>

Read demand slices from the specified model directory.

Arguments

• model_dir - Folder containing model configuration files
• svd_commodities - Map of service-demand commodities
• region_ids - Known region identifiers
• time_slice_info - Time slice configuration (seasons and times of day)

Returns

A DemandSliceMap mapping (CommodityID, RegionID, TimeSliceSelection) to the fraction of annual demand for that commodity/region/time-slice selection.