[solved] Vertical Slider rating scale?

Abulafia

Is there any possible way to invert slider scale to be vertical (analog scale in PsychoPy for example can not be turned to vertical position)? I`m not programmer in any sense so some detailed instructions are greatly appreciated. Thank you!

eduard

Hello,

I don't think you can avoid having to program a bit yourself. However, it is not that hard, and there are many discussions dealing with this topic here in the Forum.

As a starter, you could have a look on this discussion here : http://forum.cogsci.nl/index.php?p=/discussion/1415/solved-slider-and-touch-screen/p1

It describes rather detailed how to implement a horizontal slider. All you would need to do, is finding and swapping the x and y coordinates accordingly.

I hope this is what you had in mind?

Give it a shot, and if you need more help, just ask again.

Good luck ,

Eduard

Abulafia

Thank you for your reply. Main idea is to force slider to move upwards while mouse moves upwards, opposite direction accordingly. I`ve tried to change code but have only achieved mouse movement inversion. It looks like slider moves only in x axis. Main goal is y axis increment.

eduard

This should do the trick, but you probably need to tweak the code a bit to make it prettier.

from openexp.canvas import canvas
from openexp.mouse import mouse
my_canvas = canvas(self.experiment)
my_mouse = mouse(self.experiment, timeout=20)

# Set slider dimensions
slider_w = 500
slider_h = 100
slider_x = self.get("width")/2-slider_w/2
slider_y = self.get("height")/2-slider_h/2

while True:
        # Determine the slider fill based on the mouse position
        pos, time = my_mouse.get_pos()
        x, y = pos
        # If you want to re-enter the slider loop, you need a variable that can be True
        # or False. Initialized as being False. Only if mouse on slider, it becomes True
        enter = False
        if not (x < slider_x - slider_w/2) or (x > slider_x + slider_w/2):
              enter = True

        while enter:

            # Determine the slider fill based on the mouse position
             pos, time = my_mouse.get_pos()
             x, y = pos

             # Break when the mouse leaves the slider area
             if (x < slider_x - slider_w/2) or (x > slider_x + slider_w/2):
                  break

             slider_fill = min(slider_w, max(0, y-slider_y))

             my_canvas.clear()
             # Draw some text (this can be anything)
             my_canvas.text("Question goes here", y=slider_y-100)   
             my_canvas.text("Click to accept ...", y=slider_y+100)
             # Draw the slider frame
             my_canvas.rect(slider_x, slider_y, slider_h, slider_w)
             # Draw the slider fill
             my_canvas.rect(slider_x, slider_y, slider_h, slider_fill, fill=True)               
             # Draw the mouse cursor 
             my_canvas.arrow(x+5, y+10, x, y)
             my_canvas.show()

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

slider_percent = 100.0*slider_fill/slider_w     
self.experiment.set("slider_percent", slider_percent)

Abulafia

I would like to thank you so much. With your hints I have achieved more than I expected first. Quite amazing OpenSesame actually is.

The only problem left to solve is output data. Currently after clicking exported csv file is completely empty. I have not dug deeply into documentation yet.
Thank you once again!

eduard

Nice to hear.

You probably wanna have a look at the logger item (See here)

Eduard