Index

The meaning of this argument depends on the mode.

Mode = 0|1 (absolute)

0 Random draw

i The i-th element from 1..N elements will be selected

Mode = 2 | 3 (relative)

delta Delta between the last element selected by the GE-command and the to-be-selected element. The direction depends on the mode (2 for descending, 3 for ascending).

Mode = 4 Log last element selected by GE. Use this mode when you loop a trial and you want to record the last element selected by GE-command.

 Example for traversing a set and recording the final value

PICTURE 1 N
PICTURE 2 N
PICTURE 3 N
PICTURE 4 N
PICTURE 5 N
PICTURE 6 N

SET Digits V 1 2 3 4 5 6 ; Set with digits 1..6

PICTURE RndPic N ; Dummy picture used as destination object

; If this trial is executed many times, all letters are displayed in random order

TRIAL Initialize
GE Digits RndPic 0          ; Draw random element and assign it to RndPic

TRIAL SelectDigit
RK ResKeys          ; Record Keys
SP RndPic MidPos 1 0 1          ; Show random picture until response

OK          ; Branch to different action depending on key
CL: GE Digits RndPic 2 1          ; Select previous element from set
CL: ET 1 1 1 2          ; Repeat this trial and do not record
CR: GE Digits RndPic 3 1          ; Select next element from set
CL: ET 1 1 1 2          ; Repeat this trial and do not record

GE Digits RndPic 4          ; log last element selected by GE command)