Millisecond Forums » Millisecond Forums » Inquisit 6 » Change responsex and responsey from pixels to percentage

Change responsex and responsey from pixels to percentage

MattJohnson — Fri, 21 Jun 2024 09:12:17 GMT

Hi, just wondering if there is a way to change responsex and responsey from pixels to percentages? If not, is there a way to change picture.position to pixels if you're using a values attributes as x and y values? I'm trying to build a task where participants click on a target (or close to it). The target will be masked and change location on each trial. Participants will then receive points based on how close their response is to the target; more points the closer to the target the participant clicks. I've managed to build the basic skeleton, but just stuck with mismatched response units. Any helps is greatly appreciated.

RE: Change responsex and responsey from pixels to percentage

MattJohnson — Fri, 21 Jun 2024 09:12:17 GMT

+x[quote]

[b]Dave - 6/20/2024[/b]
+x[quote]

[b]Dave - 6/20/2024[/b]
+x[quote]

[b]MattJohnson - 6/20/2024[/b]
Hi, just wondering if there is a way to change responsex and responsey from pixels to percentages? If not, is there a way to change picture.position to pixels if you're using a values attributes as x and y values? I'm trying to build a task where participants click on a target (or close to it). The target will be masked and change location on each trial. Participants will then receive points based on how close their response is to the target; more points the closer to the target the participant clicks. I've managed to build the basic skeleton, but just stuck with mismatched response units. Any helps is greatly appreciated.
[/quote]

The stimulus element's (here: <picture>) xpx property gives you the horizontal pixel coordinate, the ypx gives you the vertical pixel coordinate.

https://www.millisecond.com/support/docs/current/html/language/properties/xpx.htm
https://www.millisecond.com/support/docs/current/html/language/properties/ypx.htm
[/quote]

Here's a quick and dirty example:

[code]<values>
/ targetx = 0
/ targety = 0
/ targetxpx = 0
/ targetypx = 0
/ points = 0
/ totalPoints = 0
/ responsex = 0
/ responsey = 0
/ distancepx = 0
</values>

<block myblock>
/ trials = [1-10 = trial.mytrial]
</block>

<trial mytrial>
/ ontrialbegin = [
    values.targetx = floor(randgaussian(50,20));
    values.targety = floor(randgaussian(50,20));
    ]
/ ontrialend = [
    values.targetxpx = picture.cir.xpx;
    values.targetypx = picture.cir.ypx;
    values.responsex = trial.mytrial.responsex;
    values.responsey = trial.mytrial.responsey;
    values.distancepx = sqrt(pow((values.responsex - values.targetxpx), 2) + pow((values.responsey - values.targetypx), 2));
]
/ stimulustimes = [0 = fixation; 800 = clearscreen; 850 = cir]
/ inputdevice = mouse
/ validresponse = (lbuttondblclk)
</trial>

<item cir_file>
/ 1 = "cir.png"
</item>

<picture cir>
/ items = cir_file
/ size = (10%, 10%)
/ position = (values.targetx, values.targety)
</picture>

<text fixation>
/ items = ("+")
</text>

<data>
/ columns = (trialnum values.targetx values.targety values.targetxpx values.targetypx values.responsex values.responsey values.distancepx)
</data>
[/code]
[/quote]

Fantastic! Thank you very much, Dave- much appreciated!

RE: Change responsex and responsey from pixels to percentage

Dave — Thu, 20 Jun 2024 16:42:20 GMT

+x[quote]

[b]Dave - 6/20/2024[/b]
+x[quote]

[b]MattJohnson - 6/20/2024[/b]
Hi, just wondering if there is a way to change responsex and responsey from pixels to percentages? If not, is there a way to change picture.position to pixels if you're using a values attributes as x and y values? I'm trying to build a task where participants click on a target (or close to it). The target will be masked and change location on each trial. Participants will then receive points based on how close their response is to the target; more points the closer to the target the participant clicks. I've managed to build the basic skeleton, but just stuck with mismatched response units. Any helps is greatly appreciated.
[/quote]

The stimulus element's (here: <picture>) xpx property gives you the horizontal pixel coordinate, the ypx gives you the vertical pixel coordinate.

https://www.millisecond.com/support/docs/current/html/language/properties/xpx.htm
https://www.millisecond.com/support/docs/current/html/language/properties/ypx.htm
[/quote]

Here's a quick and dirty example:

[code]<values>
/ targetx = 0
/ targety = 0
/ targetxpx = 0
/ targetypx = 0
/ points = 0
/ totalPoints = 0
/ responsex = 0
/ responsey = 0
/ distancepx = 0
</values>

<block myblock>
/ trials = [1-10 = trial.mytrial]
</block>

<trial mytrial>
/ ontrialbegin = [
    values.targetx = floor(randgaussian(50,20));
    values.targety = floor(randgaussian(50,20));
    ]
/ ontrialend = [
    values.targetxpx = picture.cir.xpx;
    values.targetypx = picture.cir.ypx;
    values.responsex = trial.mytrial.responsex;
    values.responsey = trial.mytrial.responsey;
    values.distancepx = sqrt(pow((values.responsex - values.targetxpx), 2) + pow((values.responsey - values.targetypx), 2));
]
/ stimulustimes = [0 = fixation; 800 = clearscreen; 850 = cir]
/ inputdevice = mouse
/ validresponse = (lbuttondblclk)
</trial>

<item cir_file>
/ 1 = "cir.png"
</item>

<picture cir>
/ items = cir_file
/ size = (10%, 10%)
/ position = (values.targetx, values.targety)
</picture>

<text fixation>
/ items = ("+")
</text>

<data>
/ columns = (trialnum values.targetx values.targety values.targetxpx values.targetypx values.responsex values.responsey values.distancepx)
</data>
[/code]

RE: Change responsex and responsey from pixels to percentage

Dave — Thu, 20 Jun 2024 16:08:08 GMT

+x[quote]

[b]MattJohnson - 6/20/2024[/b]
Hi, just wondering if there is a way to change responsex and responsey from pixels to percentages? If not, is there a way to change picture.position to pixels if you're using a values attributes as x and y values? I'm trying to build a task where participants click on a target (or close to it). The target will be masked and change location on each trial. Participants will then receive points based on how close their response is to the target; more points the closer to the target the participant clicks. I've managed to build the basic skeleton, but just stuck with mismatched response units. Any helps is greatly appreciated.
[/quote]

The stimulus element's (here: <picture>) xpx property gives you the horizontal pixel coordinate, the ypx gives you the vertical pixel coordinate.

https://www.millisecond.com/support/docs/current/html/language/properties/xpx.htm
https://www.millisecond.com/support/docs/current/html/language/properties/ypx.htm