How to make ROI area appear on screen?

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I want to know how to make ROI area appear on screen?（I want to make sure ROI area I setted is right)

I’m grateful for any advice on this!

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If I understand correctly you would like to visually inspect a region of interest for your experimen to ensure the region is correct.

If your region corresponds to a rectangle, my guess would be (depending on how you define your area) you can create a rectangle at the given position and size temporarily in your script and ensure the shape. If you need to convert your ROI to psychopy’s units so that it is usable for your temporary rectangle, you can use an LLM to calculate the conversions.

Feel free to share your definition of the ROI so that we can assist you.

Hope this helps.