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For Function

Hello all,

 

This is likely pretty basic, but i am very new to JSL so be gentle!

 

How do i create a column that meets the following criteria.

 

For every Replenishment Order there is a lag on the inventory column until the inventory is positive. In this example it would pull 2/1/18 because the lag before that results in a positive number.

 

Type                           Week           Inventory               Lag

Stock                          1/7/18          10

Customer Order          2/1/18          -150

Customer Order          3/1/18         -250

Replenishment Order 4/1/18          500                         2/1/18

Re: For Function

Here is an example of using a formula for your Lag column that will produce the results you want

names Default to Here( 1 );
New Table( "Example",
 Add Rows( 4 ),
 Set Header Height( 44 ),
 New Column( "Type",
  Character,
  "Nominal",
  Set Values(
   {"Stock", "Customer Order", "Customer Order", "Replenishment Order"}
  ),
  Set Display Width( 118 )
 ),
 New Column( "Week",
  Numeric,
  "Continuous",
  Format( "m/d/y", 12 ),
  Input Format( "m/d/y" ),
  Set Values( [3598128000, 3600288000, 3602707200, 3605385600] )
 ),
 New Column( "Inventory",
  Numeric,
  "Continuous",
  Format( "Best", 12 ),
  Set Values( [10, -150, -250, 500] )
 ),
 New Column( "lag",
  Numeric,
  "Continuous",
  Format( "m/d/y", 12 ),
  Input Format( "m/d/y" ),
  Formula(
   If( Row() == 1, holdval = . );
   If( :Inventory < 0 & Is Missing( holdval ) == 1,
    holdval = :Week
   );
   finalval = .;
   If( :Inventory > 0,
    finalval = holdval;
    holdval = .;
   );
   finalval;
  )
 )
)