Gross Margin Analysis

read "/sample/Lokad_Items.tsv"
read "/sample/Lokad_Orders.tsv" as Orders
read "/sample/Lokad_PurchaseOrders.tsv" as PO

show label "Gross margin analysis (LIFO inventory cost)" a1f1 tomato

Orders.OrderId = "\{Orders.Date}-\{Orders.Client}"
oend := max(Orders.Date)

// Default currency, and currency conversions
when date >= oend - 365
  currency := mode(Orders.Currency)
Orders.NetAmount = forex(Orders.NetAmount, Orders.Currency, currency, Orders.Date)
PO.NetAmount = forex(PO.NetAmount, \
  PO.Currency, currency, PO.Date)

// LIFO inventory value
PO.UnitPrice = PO.NetAmount / max(1, PO.Quantity)
Orders.CostAmount = latest(PO.UnitPrice) * Orders.Quantity
Orders.Margin = Orders.NetAmount - Orders.CostAmount
Orders.Supplier = latest(PO.Supplier)

// Top row of KPIs
show label "Current year" a2
when date > oend - 365
  show table "Gross margin{ \{currency}}" b2 with sum(Orders.Margin)
  show table "Gross margin{%}" c2 with sum(Orders.Margin) / sum(Orders.NetAmount)
  show table "Orders" d2 with distinct(Orders.OrderId)
  show table "Margin per order{ \{currency}}" e2 with 
    sum(Orders.Margin) / distinct(Orders.OrderId)
  show table "Margin per unit{ \{currency}}" f2 with 
    sum(Orders.Margin) / sum(Orders.Quantity)

show label "Previous year" a3
when date > oend - 2 * 365 & date <= oend - 365
  show table "Gross margin{ \{currency}}" b3 with sum(Orders.Margin)
  show table "Gross margin{%}" c3 with sum(Orders.Margin) / max(1, sum(Orders.NetAmount))
  show table "Orders" d3 with distinct(Orders.OrderId)
  show table "Margin per order{ \{currency}}" e3 with 
    sum(Orders.Margin) / max(1, distinct(Orders.OrderId))
  show table "Margin per unit{ \{currency}}" f3 with 
    sum(Orders.Margin) / max(1, sum(Orders.Quantity))

// Linechart
Week.margin := sum(Orders.Margin)
when date >= monday(oend) - 52 * 7 & date < monday(oend)
  show linechart "Weekly gross margin{ \{currency}}" a4f6 tomato with 
    Week.margin as "Current year"
    Week.margin[-52] as "Previous year"

// Split by category and supplier
when date > oend - 365
  show barchart "Margin per category (1 year){ \{currency}}" a7c9 tomato with 
    sum(Orders.Margin) 
    group by Category
  show barchart "Margin per supplier (1 year){ \{currency}}" d7f9 tomato with 
    sum(Orders.Margin) 
    group by Orders.Supplier

// Tops and flops
when date > oend - 365
where sum(Orders.NetAmount) > 0
  show table "Most profitable items (1 year)" a10c12 with 
    Id
    Name
    sum(Orders.Margin) as "Margin{ \{currency}}"
    sum(Orders.Margin) / sum(Orders.NetAmount) as "Margin{%}" 
    order by sum(Orders.Margin) desc

  R = rank(sum(Orders.Margin))
  where R <= 0.2 * max(R) by 1
    show table "Least profitable items (1 year, among top 20%)" d10f12 with 
      Id
      Name
      sum(Orders.Margin) as "Margin{ \{currency}}"
      sum(Orders.Margin) / sum(Orders.NetAmount) as "Margin{%}" 
      order by sum(Orders.NetAmount) / sum(Orders.Margin) desc