[solved] Rating slider data logging

ahanif

Hi all,

I have modified a rating slider that was shared by Sebastiaan in another post. http://forum.cogsci.nl/index.php?p=/discussion/40/solved-implementing-a-slider/p1 . I want three sliders to appear on the same screen and I wish to collect responses one after the other. (Ideally, I would like to include accept and reset buttons as well). Although stimuli presentation is now modified to look just as I want, I am having trouble with response collection. Right now, all the three sliders are active and the program does not exit after 3 clicks. Here is the script http://pastebin.com/embed_js.php?i=UsmvUwYF

Any pointers and suggestions will be appreciated.

Thanks,
Asma

Edwin

Hi Asma,

If you want to have three sliders running sequentially, you will have to make sure they do not run at the same time. The script below should run through three sliders, storing their filling percentage one by one.

# import everything we need
from openexp.canvas import canvas
from openexp.mouse import mouse

# create the instances we need
my_canvas = canvas(self.experiment)
my_mouse = mouse(self.experiment, timeout=20)

# slider dimensions
slider_w = 500
slider_h = 10
slider_x = self.get("width")/2 - slider_w/2
# three different y-coordinates, one for each slider
slider_y = [self.get("height")/4, 2*self.get("height")/4, 3*self.get("height")/4]

# variable names to store the slider fillings in
names = ["slider_1", "slider_2", "slider_3"]

# questions to put above the sliders
questions = ["question 1", "question 2", "question 3"]

# loop through all three slider positions, to draw the empty slider canvas
for i in range(len(slider_y)):
    # draw some text (this can be anything)
    my_canvas.text(questions[i], y=slider_y[i]-100)
    # draw the slider frame
    my_canvas.rect(slider_x, slider_y[i], slider_w, slider_h)

# add a text below the bottom slider, telling participants to click to accept
my_canvas.text("Click to accept ...", y=slider_y[-1]+100) 

# loop through all three sliders, waiting for input
for i in range(len(slider_y)):

    # keep showing the interactive slider until a click has been made
    clicked = False
    while not clicked:

        # determine the slider fill based on the mouse position
        pos, time = my_mouse.get_pos()
        x, y = pos
        slider_fill = min(slider_w, max(0, x-slider_x))

        # draw an empty rect within the slider frame, effectively resetting it
        my_canvas.rect(slider_x+1, slider_y[i]+1, slider_w-2, slider_h-2, fill=True, color=self.get("background"))
        # draw the slider fill
        my_canvas.rect(slider_x+1, slider_y[i]+1, slider_fill-2, slider_h-2, fill=True)
        # show the updated canvas
        my_canvas.show()

        # Poll the mouse for buttonclicks
        button, position, timestamp = my_mouse.get_click(timeout = 20)
        if button != None:
            clicked = True

    # save the slider's filling
    slider_percent = 100.0*slider_fill/slider_w     
    self.experiment.set(names[i], slider_percent)

Good luck!

ahanif

Thanks so much Edwin! It works perfectly.