Problems with slider appearing

[Sam_D.J]

If this template helps then use it. If not then just delete and start from scratch.

OS. Win11
PsychoPy version v2022.1.4
**Standard Standalone? yes
**What are you trying to achieve?:**i would like to alternate the position of the slider by changing the x coordinate to the saved parameter name “f4.” (see attached excel file) But when I did that the slider did not appear. The other 2 parameters (f2, f3) work fine.

What did you try to make it work?: I tried changing the position to “set every repeat.”

What specifically went wrong when you tried that?: nothing changed, the slider still did not appear.

pred.xlsx (10.0 KB)

[wakecarter]

Are the other parameters related to your slider?

Does the slider work if you give a fixed value (one of the numbers from your spreadsheet)?

Is the slider using pix units?

[Sam_D.J]

Are the other parameters related to your slider?,
-No, the I only wanted to manipulate the x coordinate

Does the slider work if you give a fixed value (one of the numbers from your spreadsheet)?
-Yes

Is the slider using pix units?
-yes

Thank you for replying!

[wakecarter]

I think that it’s probably failing because the x coordinate is undefined at the point it gets used.

Please could you show a screenshot of your slider?

Try adding a text component which has f4 as the x coordinate to see if that works.

Try setting the f4 to 0 and 1 instead of+ and - 400.

[Sam_D.J]

Thank you again for responding!

Try adding a text component which has f4 as the x coordinate to see if that works.
-The experiment did not run (using original excel file)

Try setting the f4 to 0 and 1 instead of+ and - 400.
-the experiment also did not run

[Sam_D.J]

This if the slider is positioned at (0, -400)

[wakecarter]

If you want the position of your slider to change then you need to set the position to update each repeat instead of being constant.

[Sam_D.J]

you need to set the position to update each repeat instead of being constant:
-When I did that, the experiment ran, but the slider no longer appeared. However, if I set a normal coordinate e.g. ( 0, -400) instead of using a parameter from the excel file, the slider would appear.

[wakecarter]

Please could you show another screenshot. In the one you showed you had the position set to (f4 , -400) constant.

If that doesn’t work try $(f4 , -400) each repeat.

[Sam_D.J]

Thank you again for your responses. So I had been playing around, and now, at the current setting (screenshot) my slider appears but only at the middle (image).

When I add $, the outcome is the same.

[Sam_D.J]

Sorry, I reread your response, this is when it is constant. Under this setting, the experiment does not run.

[Sam_D.J]

thank you again for responding! I did more research and there seems to be a bug with the version of psychopy that I have, so I think using the latest version would ensure that there’s no problems with the slider. But for now I added a custom code in my current version.