Reply To: Choosing subet of items to present

[Jeremy]

Just to double-check: your table defines 90 filler items whose ‘number’ label goes from 1 to 90, right?

When I test it I do get items whose number is over 45, but they indeed seem massively underrepresented. It seems to improve a bit when changing the > comparison when randomly sorting the indices for a >= comparison

Here’s my full script if you want to compare with yours:

PennController.ResetPrefix(null)

let myTable = "type,number,text\n"

for (let i = 0; i < 90; i++)
    myTable += "filler,"+Number(i+1)+",textfiller"+i+"\ntest,"+Number(i+1)+",texttest"+i+"\n";

AddTable("myTable", myTable)

Sequence( randomize(anyOf(startsWith("test"),startsWith("filler"))) )

numberRows_fillers = 90; 
numberDraws_fillers = 45; 
randomIDs_fillers = [...new Array(numberRows_fillers)].map((v,i)=>i).sort(v=>Math.random()>=0.5).splice(1,numberDraws_fillers); 

Template( GetTable("myTable").filter( r => r.type=="filler" && randomIDs_fillers.indexOf(Number(r.number))>-1 ),
    row => newTrial( "filler-"+row.number , newText("filler").print(),newButton(row.text).print().wait() )
)

Template( GetTable("myTable").filter( r => r.type=="test" && randomIDs_fillers.indexOf(Number(r.number))>-1 ),
    row => newTrial( "test-"+row.number , newText("test").print(),newButton(row.text).print().wait() )
)

Jeremy