Hi,
I am trying to code a rating scale where the marker moves one pixel when a
key is pressed, but if the user holds the key down, the marker should move
continuously until the key is released. Any ideas on how to do that? In the
below code, VAS is a psychopy ratingScale object.
############################ # Pakages # ############################
from psychopy.hardware import keyboard as kb
from psychopy import visual, event
import pyglet
from pyglet.window import key as PygKey
############################ # Set up window # ############################
win = visual.Window(size=[800, 800], # Screen size
units="pix", # The size and placement of
stimuli is defined in pixels
monitor = "Monitor", # Monitor can be set to 1 or 2
fullscr=False, # Full Screen True or False
color=[0, 0, 0]) # Color of the background in
the window
# [1,1,1] = White, [0,0,0] =
Grey, [-1,-1,-1] = black
############################ # Set up pyglet # ############################
pyglet_keyboard=pyglet.window.key
keyboard = pyglet_keyboard.KeyStateHandler()
kb = kb.Keyboard()
win.winHandle.push_handlers(keyboard)
PygKeys = PygKey.KeyStateHandler()
############################ # Set up rating scale #
############################
increment = 0.5 # How fast the marker moves
via button hold
SmallIncrement = 1 # How far the button moves from
quick press
High = 100 # The max number on the scale
Low = 0 # The min number on the scale
Window = win # The window the rating scaled
is placed in
MarkerStart = 50
# Marker starting point
VAS = visual.RatingScale(win=Window,
low = Low,
high = High,
marker = 'triangle',
markerColor = 'Black',
markerStart = MarkerStart,
lineColor = 'black',
tickMarks = [0,100],
stretch = 1.5,
noMouse = True,
leftKeys = 'left',
rightKeys = 'right',
showAccept = False,
tickHeight = 1.5,
acceptKeys = 'space',
textColor = 'Black')
rating_value= None
event.clearEvents()
#for frameN in range(10000):
while VAS.noResponse:
if PygKeys[PygKey.RIGHT]:
VAS.markerPlacedAt += increment
#if keyboard[pyglet_keyboard.RIGHT]:
#VAS.markerPlacedAt += SmallIncrement
if PygKeys[PygKey.LEFT]:
VAS.markerPlacedAt -= increment
#if keyboard[pyglet_keyboard.LEFT]:
#VAS.markerPlacedAt -= SmallIncrement
if VAS.markerPlacedAt > High:
VAS.markerPlacedAt = High # do not allow marker to move outside the
scale (above 100)
elif VAS.markerPlacedAt < Low:
VAS.markerPlacedAt = Low # do not allow marker to move outside the
scale (below 0)
VAS.draw()
win.flip()
rating_value = VAS.getRating()
win.close()
If I comment out the elif statements, the marker moves in small increments.
If I instead comment out the if statements (and change the elifs to ifs)
the marker moves continuously, When I do not uncomment any lines, the
marker moves continuously as well. Any help or advise would be greatly
appreciated
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