# Scale Slider **URL:** \ **Category:** Uncategorized\ **Created:** [November 25, 2016, 2:53pm UTC](https://psychtoolbox.discourse.group/t/scale-slider/146 "2016-11-25T14:53:42Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![wdedoncker93](https://avatars.discourse-cdn.com/v4/letter/w/a587f6/32.png) [@wdedoncker93](https://psychtoolbox.discourse.group/u/wdedoncker93)\ **Post date:** [November 25, 2016, 2:53pm UTC](https://psychtoolbox.discourse.group/t/scale-slider/146/1 "2016-11-25T14:53:42Z")
Hi there, I am just wondering whether it is possible to create a Scale Slider in PTB, just like you can using the GUI interface in MatLab. I want to measure confidence on a scale of 1 to 10 using a scale slider following a response to a stimulus, with the participants able to see the value of their response on the scale.  Any suggestions as to how best to do this would be very much appreciated. Best, Will ---
**Author:** ![Allen\_Ingling](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@Allen\_Ingling](https://psychtoolbox.discourse.group/u/Allen_Ingling)\ **Post date:** [November 25, 2016, 9:40pm UTC](https://psychtoolbox.discourse.group/t/scale-slider/146/2 "2016-11-25T21:40:58Z")
Hi there, I actually wrote a code snippet to do exactly this, based on someone else's code I found online. It wouldn't be hard to turn this into a function that returns a value. You can make the values anything you like, and the text anything you like - should be fairly obvious. Hope this helps! Cheers Deborah. [wdedoncker93@...](mailto:wdedoncker93@...) [PSYCHTOOLBOX] wrote: > > Hi there, > > > > I am just wondering whether it is possible to create a Scale Slider in PTB, just like you can using the GUI interface in MatLab. > > > > I want to measure confidence on a scale of 1 to 10 using a scale slider following a response to a stimulus, with the participants able to see the value of their response on the scale. > > > > Any suggestions as to how best to do this would be very much appreciated. > > > > Best, > > > > Will > > > > -- > > Deborah Apthorp > NHMRC Early Career Fellow > Research School of Psychology > Australian National University > ACT 2601 > > ph. (02) 6125 9631 ---
**Author:** ![wdedoncker93](https://avatars.discourse-cdn.com/v4/letter/w/a587f6/32.png) [@wdedoncker93](https://psychtoolbox.discourse.group/u/wdedoncker93)\ **Post date:** [November 28, 2016, 11:23am UTC](https://psychtoolbox.discourse.group/t/scale-slider/146/3 "2016-11-28T11:23:27Z")
Hi Deborah, Thank you very much for that! Some minor alterations and that should do exactly what I want it to do. Once again thank you for your help. Cheers, Will ---
**Author:** ![remigau82](https://avatars.discourse-cdn.com/v4/letter/r/439d5e/32.png) [@remigau82](https://psychtoolbox.discourse.group/u/remigau82)\ **Post date:** [November 28, 2016, 3:21pm UTC](https://psychtoolbox.discourse.group/t/scale-slider/146/4 "2016-11-28T15:21:23Z")
Hey all, Not directly PTB related but since sliders were mentionned, I think this is worth having a look at. The Effect of Visual Appearance on the Performance of Continuous Sliders and Visual Analogue Scales [https://www.youtube.com/watch?v=vxV0rV9LX\_U](https://www.youtube.com/watch?v=vxV0rV9LX_U) Best Remi On 25/11/16 21:40, Deborah Apthorp [deborah.apthorp@...](mailto:deborah.apthorp@...) [PSYCHTOOLBOX] wrote: > > Hi there, > > > > I actually wrote a code snippet to do exactly this, based on someone else's code I found online. It wouldn't be hard to turn this into a function that returns a value. > > > > You can make the values anything you like, and the text anything you like - should be fairly obvious. > > > > Hope this helps! > > > > Cheers > > > > Deborah. > > > > > > > > [wdedoncker93@...](mailto:wdedoncker93@...) [PSYCHTOOLBOX] wrote: > > > > >   > > > > > > Hi there, > > > > > > I am just wondering whether it is possible to create a Scale Slider in PTB, just like you can using the GUI interface in MatLab. > > > > > > I want to measure confidence on a scale of 1 to 10 using a scale slider following a response to a stimulus, with the participants able to see the value of their response on the scale.  > > > > > > Any suggestions as to how best to do this would be very much appreciated. > > > > > > Best, > > > > > > Will > > > > > > > > -- > > > > Deborah Apthorp > > NHMRC Early Career Fellow > > Research School of Psychology > > Australian National University > > ACT 2601 > > > > ph. (02) 6125 9631 ---
**Author:** ![wdedoncker93](https://avatars.discourse-cdn.com/v4/letter/w/a587f6/32.png) [@wdedoncker93](https://psychtoolbox.discourse.group/u/wdedoncker93)\ **Post date:** [November 28, 2016, 2:13pm UTC](https://psychtoolbox.discourse.group/t/scale-slider/146/5 "2016-11-28T14:13:41Z")
Hi Deborah, Sorry again, I am relatively new to PTB and trying to get a protocol running. Any suggestions as to how I could get the value returned and displayed on the screen while someone is moving the scale slider along the line? Thanks for the help, Will ---
**Author:** ![Allen\_Ingling](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@Allen\_Ingling](https://psychtoolbox.discourse.group/u/Allen_Ingling)\ **Post date:** [November 29, 2016, 6:58am UTC](https://psychtoolbox.discourse.group/t/scale-slider/146/6 "2016-11-29T06:58:40Z")
Hi Will, OK, here is some slightly updated code that includes the current rating displayed on the screen. You really just needed 2 extra lines: one to work out the current rating, and one to display the text on the screen: currentRating = ((LineX - xCenter) + 250)/50; % for a rating of between 0 and 10. Tweak this as necessary. DrawFormattedText(w, num2str(currentRating) ,'center', (yCenter-200), textColor, [],[],[],5); % display current rating (to make this display whole numbers, use "round(currentRating)" But I made the code a bit nicer so you can enter your own instructions and anchors for the scale at the top. Cheers! Deborah. [wdedoncker93@...](mailto:wdedoncker93@...) [PSYCHTOOLBOX] wrote: > > Hi Deborah, > > > > > > > > Sorry again, I am relatively new to PTB and trying to get a protocol running. Any suggestions as to how I could get the value returned and displayed on the screen while someone is moving the scale slider along the line? > > > > > > > > Thanks for the help, > > > > > > > > Will > > > > -- > > Deborah Apthorp > NHMRC Early Career Fellow > Research School of Psychology > Australian National University > ACT 2601 > > ph. (02) 6125 9631 ---
**Author:** ![wdedoncker93](https://avatars.discourse-cdn.com/v4/letter/w/a587f6/32.png) [@wdedoncker93](https://psychtoolbox.discourse.group/u/wdedoncker93)\ **Post date:** [November 29, 2016, 5:30pm UTC](https://psychtoolbox.discourse.group/t/scale-slider/146/7 "2016-11-29T17:30:35Z")
Deborah,  You are a legend! That works perfect, thank you very much for all your help.  Cheers, Will ---
**Author:** ![mbreshock](https://avatars.discourse-cdn.com/v4/letter/m/f0a364/32.png) [@mbreshock](https://psychtoolbox.discourse.group/u/mbreshock)\ **Post date:** [September 2, 2020, 3:15am UTC](https://psychtoolbox.discourse.group/t/scale-slider/146/8 "2020-09-02T03:15:21Z")
Hi Deborah, I know its been awhile since you originally posted this but I’m looking for a similar function as Will described. For some reason I am unable to see the code you shared so I was wondering if you wouldn’t mind posting it again or sharing privately? Thanks! Cheers Michael ---
**Author:** ![AntoniaSchumann](https://avatars.discourse-cdn.com/v4/letter/a/58956e/32.png) [@AntoniaSchumann](https://psychtoolbox.discourse.group/u/AntoniaSchumann)\ **Post date:** [January 27, 2021, 9:48am UTC](https://psychtoolbox.discourse.group/t/scale-slider/146/9 "2021-01-27T09:48:50Z")
Hey Deborah, I know this is quite some time ago, but I’d be very interested in the code as well since I want to implement a continuous scale in my experiment. Is there any way you could the lines again? Best, Antonia ---
**Author:** ![Eniluap](https://avatars.discourse-cdn.com/v4/letter/e/bb73d2/32.png) [@Eniluap](https://psychtoolbox.discourse.group/u/Eniluap)\ **Post date:** [April 26, 2021, 4:56pm UTC](https://psychtoolbox.discourse.group/t/scale-slider/146/10 "2021-04-26T16:56:32Z")
Hi there, Same question. Would you be able to share that code? Thanks Pauline ---
**Author:** ![Ian-Max-Andolina](https://yyz2.discourse-cdn.com/free1/user_avatar/psychtoolbox.discourse.group/ian-max-andolina/32/4_2.png) [@Ian-Max-Andolina](https://psychtoolbox.discourse.group/u/Ian-Max-Andolina)\ **Post date:** [April 27, 2021, 6:31am UTC](https://psychtoolbox.discourse.group/t/scale-slider/146/11 "2021-04-27T06:31:23Z")
It is probable that Deborah Apthorp doesn’t read this forum, so you should try to contact her directly to share her code again, ideally re-uploading it here so others can use it… > **[Deborah Apthorp](https://www.deborahapthorp.com)** > > Deborah Apthorp's personal website