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Thread: Selecting picture randomly

  1. #1

    Selecting picture randomly

    Can I select a pic from many pics, and then the selected pic was shown as the next stim in DirectRT? Many thanks to you.

  2. #2
    Join Date
    Nov 2005
    Just to make sure I'm clear--you mean you would like to randomly select (either via truly random or with replacement) and then display a picture?

  3. #3
    Many thanks!
    I want to select randomly the most beautful photo from many photos, and then the other photos can disapper or be displaced by the selected photo.

  4. #4
    Join Date
    Nov 2005
    If it's the most beautiful photo, then it wouldn't be random. Are you kidding or am I missing something?

  5. #5

    Many Thanks!

    Mant thanks to you, sorry for my english.
    I have six pictures in one screen, and I want to let subjects select a picture based on special standard,such as beauty. Once a subject selected certain numbered picture, then he (or she) can see the selected pictures so as to make a plan for first date.

    Is can be done in your software?
    Best Regards.

  6. #6
    Join Date
    Nov 2005
    Ahhh, I see. Yes, DirectRT (and MediaLab) can handle that kind of thing. You could use basic conditional skipping (see skipping in the user's guide or online here:


    Essentially, you could show multiple (random or fixed) images and then send them to a specific trial based on what key they press.

  7. #7

    "~=3" can be used for presenting a photo?

    Hello, I attached a experiment in direcrt.
    In this experiment, it is possible that any photo with certain no. may be selected by a subject. I used the open-end respose function, but only the no. in the photo was showed, I want to show a photo with certain no.
    can you help me?
    Best Regards.

  8. #8

    the csv attached

    PLease see the attached.
    Attached Files Attached Files

  9. #9
    Join Date
    Nov 2005
    Mmm, I can see where you are going with this (nice idea) but I think what you are looking for is most easily accomplished using skips something like this:

    C:\DirectRT\samples\3 ordering trials\skipping.csv

    Take a look at that sample (and skipping in the users guide) and see if that helps.

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