Millisecond Forums

So sorry I didn't see this earlier, thank you so much though, it is very helpful!

You can achieve that too via conditional logic in /ontrialend: Check which object is in which position -- here numbered position 1 to 4, left to right, top then bottom -- i.e.

position 1           position 2

position 3           position 4

by examining the respective h/v coordinates and then store the respective object's currentitem in a value which you log to the data file:

<values>
/ h1 = 0%
/ v1 = 0%
/ h2 = 0%
/ v2 = 0%
/ h3 = 0%
/ v3 = 0%
/ h4 = 0%
/ v4 = 0%

/ item_in_position1 = ""
/ item_in_position2 = ""
/ item_in_position3= ""
/ item_in_position4 = ""

/ object_blue = ""
/ object_green = ""
/ object_red = ""
/ object_yellow = ""
</values>

<list hpositions>
/ items = (40%, 60%, 40%, 60%)
/ selectionrate = always
</list>

<list vpositions>
/ items = (25%, 25%, 75%, 75%)
/ selectionmode = list.hpositions.currentindex
/ selectionrate = always
</list>

<text object_blue>
/ items = blueobjects
/ txcolor = blue
/ hposition = values.h1
/ vposition = values.v1
</text>

<text object_green>
/ items = greenobjects
/ txcolor = green
/ select = text.object_blue.currentindex
/ hposition = values.h2
/ vposition = values.v2
</text>

<text object_red>
/ items = redobjects
/ txcolor = red
/ select = text.object_blue.currentindex
/ hposition = values.h3
/ vposition = values.v3
</text>

<text object_yellow>
/ items = yellowobjects
/ txcolor = yellow
/ select = text.object_blue.currentindex
/ hposition = values.h4
/ vposition = values.v4
</text>

<item blueobjects>
/ 1 = "Blue Umbrella"
/ 2 = "Blue Car"
/ 3 = "Blue Bottle"
/ 4 = "Blue House"
</item>

<item greenobjects>
/ 1 = "Green Umbrella"
/ 2 = "Green Car"
/ 3 = "Green Bottle"
/ 4 = "Green House"
</item>

<item redobjects>
/ 1 = "Red Umbrella"
/ 2 = "Red Car"
/ 3 = "Red Bottle"
/ 4 = "Red House"
</item>

<item yellowobjects>
/ 1 = "Yellow Umbrella"
/ 2 = "Yellow Car"
/ 3 = "Yellow Bottle"
/ 4 = "Yellow House"
</item>

<trial example>
/ ontrialbegin = [
    values.h1 = list.hpositions.nextvalue;
    values.v1 = list.vpositions.nextvalue;
    values.h2 = list.hpositions.nextvalue;
    values.v2 = list.vpositions.nextvalue;
    values.h3 = list.hpositions.nextvalue;
    values.v3 = list.vpositions.nextvalue;
    values.h4 = list.hpositions.nextvalue;
    values.v4 = list.vpositions.nextvalue;
]
/ ontrialend = [
    values.object_blue = text.object_blue.currentitem;
    values.object_green = text.object_green.currentitem;
    values.object_red = text.object_red.currentitem;
    values.object_yellow = text.object_yellow.currentitem;
]
/ ontrialend = [
    if (values.h1 == 40% && values.v1 == 25%) {
        values.item_in_position1 = text.object_blue.currentitem;
    } else if (values.h1 == 60% && values.v1 == 25%) {
        values.item_in_position2 = text.object_blue.currentitem;
    } else if (values.h1 == 40% && values.v1 == 75%) {
        values.item_in_position3 = text.object_blue.currentitem;
    } else if (values.h1 == 60% && values.v1 == 75%) {
        values.item_in_position4 = text.object_blue.currentitem;
    }
]
/ ontrialend = [
    if (values.h2 == 40% && values.v2 == 25%) {
        values.item_in_position1 = text.object_green.currentitem;
    } else if (values.h2 == 60% && values.v2 == 25%) {
        values.item_in_position2 = text.object_green.currentitem;
    } else if (values.h2 == 40% && values.v2 == 75%) {
        values.item_in_position3 = text.object_green.currentitem;
    } else if (values.h2 == 60% && values.v2 == 75%) {
        values.item_in_position4 = text.object_green.currentitem;
    }
]
/ ontrialend = [
    if (values.h3 == 40% && values.v3 == 25%) {
        values.item_in_position1 = text.object_red.currentitem;
    } else if (values.h3 == 60% && values.v3 == 25%) {
        values.item_in_position2 = text.object_red.currentitem;
    } else if (values.h3 == 40% && values.v3 == 75%) {
        values.item_in_position3 = text.object_red.currentitem;
    } else if (values.h3 == 60% && values.v3 == 75%) {
        values.item_in_position4 = text.object_red.currentitem;
    }
]
/ ontrialend = [
    if (values.h4 == 40% && values.v4 == 25%) {
        values.item_in_position1 = text.object_yellow.currentitem;
    } else if (values.h4 == 60% && values.v4 == 25%) {
        values.item_in_position2 = text.object_yellow.currentitem;
    } else if (values.h4 == 40% && values.v4 == 75%) {
        values.item_in_position3 = text.object_yellow.currentitem;
    } else if (values.h4 == 60% && values.v4 == 75%) {
        values.item_in_position4 = text.object_yellow.currentitem;
    }
]
/ stimulustimes = [0=object_blue, object_green, object_red, object_yellow]
/ validresponse = (object_blue, object_green, object_red, object_yellow)
/ inputdevice = mouse
</trial>

<block myblock>
/ trials = [1-4 = example]
</block>

<data>
/ columns = (date time subject group blocknum blockcode trialnum trialcode response latency correct
    values.item_in_position1 values.item_in_position2 values.item_in_position3 values.item_in_position4)
</data>

Ah I understand what you mean, okay this does do that. Is there not a way of having the location (four locations of the image available) as the column, and then the name of the item that is placed each location as the generated data? 

values.h1 and values.v1 tell you where <picture c1b> was presented. <picture c1b> is what displays your targetsb items.
values.h2 and values.v2 tell you where <picture c1y> was presented. <picture c1y> is what displays your targetsy items.
values.h3 and values.v3 tell you where <picture c1r> was presented. <picture c1r> is what displays your targetsr items.
values.h3 and values.v3 tell you where <picture c1g> was presented. <picture c1g>is what displays your targetsg items.

Why don't you simply log those values to the data file?

I have tried these suggestions and I am unsure if they are not working because i have coded the images slightly differently.. 
This is the code I have, which works but does not display where each of the four images is presented. I would like to be able to just know which position 'targetsr, targetsb, targetsy and targetsg' are, but I realise that as they are only /items, I cannot use them in the same way as you used the /pictures. However I do not want a column for each of the 40 variations of c1r etc I have if possible. I'm not sure if it is easier for you to see what I mean by posting relevant bits of code, or attaching the file, so have done both. 


<item targetsr>

/1 = "c1r.jpg"
/2 = "c2r.jpg"
/3 = "c3r.jpg"
/4 = "c4r.jpg"
/5 = "c5r.jpg"
/6 = "c6r.jpg"
/7 = "c7r.jpg"
/8 = "c8r.jpg"
/9 = "c9r.jpg"
/10 = "c10r.jpg"
</item>

<item targetsb>

/1 = "c1b.jpg"
/2 = "c2b.jpg"
/3 = "c3b.jpg"
/4 = "c4b.jpg"
/5 = "c5b.jpg"
/6 = "c6b.jpg"
/7 = "c7b.jpg"
/8 = "c8b.jpg"
/9 = "c9b.jpg"
/10 = "c10b.jpg"

</item>

<item targetsy>

/1 = "c1y.jpg"
/2 = "c2y.jpg"
/3 = "c3y.jpg"
/4 = "c4y.jpg"
/5 = "c5y.jpg"
/6 = "c6y.jpg"
/7 = "c7y.jpg"
/8 = "c8y.jpg"
/9 = "c9y.jpg"
/10 = "c10y.jpg"

</item>

<item targetsg>

/1 = "c1g.jpg"
/2 = "c2g.jpg"
/3 = "c3g.jpg"
/4 = "c4g.jpg"
/5 = "c5g.jpg"
/6 = "c6g.jpg"
/7 = "c7g.jpg"
/8 = "c8g.jpg"
/9 = "c9g.jpg"
/10 = "c10g.jpg"
</item>

********************
raw data
********************
<data>
/ separatefiles = true
/ columns = (build, date, time, subject, group, blockcode, trialcode, trialnum, values.condition,
values.currentSOA, trialduration, response, latency,values.x, values.y,
picture.advert.currentitem, picture.advert.hposition, picture.advert.vposition)
</data>

<values>
/completed = 0
/currentSOA = 0
/condition = ""
/soa_remaining = 0
/counttrials = 0
/countcorrect = 0
/sumrt= 0
/x = 0
/y = 0
/h = 0%
/v = 0%
/h1 = 0%
/v1 = 0%
/h2 = 0%
/v2 = 0%
/h3 = 0%
/v3 = 0%
/h4 = 0%
/v4 = 0%
</values>
*********************************
Targets
*********************************

<list hpositions>
/items = (25%, 75%, 25%, 75%)
/ selectionrate = always
</list>

<list vpositions>
/items = (45%, 45%, 75%, 75%)
/selectionmode = list.hpositions.currentindex
/ selectionrate = always
</list>


IMAGES shown in 1 trial (I have 10 trials in total)
*******************

<picture c1b>
/items = targetsb
/select = 1
/size = (35%,35%)
/ hposition = values.h1
/ vposition = values.v1
</picture>

<picture c1y>
/items = targetsy
/select = 1
/size = (35%,35%)
/ hposition = values.h2
/ vposition = values.v2
</picture>

<picture c1r>
/items = targetsr
/select = 1
/size = (35%,35%)
/ hposition = values.h3
/ vposition = values.v3
</picture>

<picture c1g>
/items = targetsg
/select = 1
/size = (35%,35%)
/ hposition = values.h4
/ vposition = values.v4
</picture>

**************************
Target trials 
**************************
<trial trial1a>
/ontrialbegin = [values.h = list.hlist.nextvalue; values.v = list.vlist.nextvalue;]
/ ontrialbegin = [ values.h1 = list.hpositions.nextvalue;
values.v1 = list.vpositions.nextvalue;
values.h2 = list.hpositions.nextvalue;
values.v2 = list.vpositions.nextvalue;
values.h3 = list.hpositions.nextvalue;
values.v3 = list.vpositions.nextvalue;
values.h4 = list.hpositions.nextvalue;
values.v4 = list.vpositions.nextvalue;]
/ontrialbegin = [values.condition = "C1 Raincoat"]
/ontrialbegin = [values.currentsoa = 150]

/stimulustimes = [1000 = background;
1000 = fixation;
2000 = eraser;
2001 = picture.c1r, picture.c1b, picture.c1y, picture.c1g;
2500 = picture.advert;
2650 = picture.c1r, picture.c1b, picture.c1y, picture.c1g;]
/beginresponsetime = (2650)
/inputdevice=mouse
/validresponse=(picture.c1r, picture.c1b, picture.c1y, picture.c1g)
/ontrialend = [values.x=trial.trial1a.responsex;values.y=trial.trial1a.responsey]
/recorddata = true

</trial>

As discussed previously, you can do that by either logging the <picture> elements' currentitem properties directly or storing them in values and logging the values instead:

<values>
/ h1 = 0%
/ v1 = 0%
/ h2 = 0%
/ v2 = 0%
/ h3 = 0%
/ v3 = 0%
/ h4 = 0%
/ v4 = 0%
/ object_blue = ""
/ object_green = ""
/ object_red = ""
/ object_yellow = ""
</values>

<list hpositions>
/ items = (40%, 60%, 40%, 60%)
/ selectionrate = always
</list>

<list vpositions>
/ items = (25%, 25%, 75%, 75%)
/ selectionmode = list.hpositions.currentindex
/ selectionrate = always
</list>

<text object_blue>
/ items = blueobjects
/ txcolor = blue
/ hposition = values.h1
/ vposition = values.v1
</text>

<text object_green>
/ items = greenobjects
/ txcolor = green
/ select = text.object_blue.currentindex
/ hposition = values.h2
/ vposition = values.v2
</text>

<text object_red>
/ items = redobjects
/ txcolor = red
/ select = text.object_blue.currentindex
/ hposition = values.h3
/ vposition = values.v3
</text>

<text object_yellow>
/ items = yellowobjects
/ txcolor = yellow
/ select = text.object_blue.currentindex
/ hposition = values.h4
/ vposition = values.v4
</text>

<item blueobjects>
/ 1 = "Blue Umbrella"
/ 2 = "Blue Car"
/ 3 = "Blue Bottle"
/ 4 = "Blue House"
</item>

<item greenobjects>
/ 1 = "Green Umbrella"
/ 2 = "Green Car"
/ 3 = "Green Bottle"
/ 4 = "Green House"
</item>

<item redobjects>
/ 1 = "Red Umbrella"
/ 2 = "Red Car"
/ 3 = "Red Bottle"
/ 4 = "Red House"
</item>

<item yellowobjects>
/ 1 = "Yellow Umbrella"
/ 2 = "Yellow Car"
/ 3 = "Yellow Bottle"
/ 4 = "Yellow House"
</item>

<trial example>
/ ontrialbegin = [
    values.h1 = list.hpositions.nextvalue;
    values.v1 = list.vpositions.nextvalue;
    values.h2 = list.hpositions.nextvalue;
    values.v2 = list.vpositions.nextvalue;
    values.h3 = list.hpositions.nextvalue;
    values.v3 = list.vpositions.nextvalue;
    values.h4 = list.hpositions.nextvalue;
    values.v4 = list.vpositions.nextvalue;
]
/ ontrialend = [
    values.object_blue = text.object_blue.currentitem;
    values.object_green = text.object_green.currentitem;
    values.object_red = text.object_red.currentitem;
    values.object_yellow = text.object_yellow.currentitem;
]
/ stimulustimes = [0=object_blue, object_green, object_red, object_yellow]
/ validresponse = (object_blue, object_green, object_red, object_yellow)
/ inputdevice = mouse
</trial>

<block myblock>
/ trials = [1-4 = example]
</block>

<data>
/ columns = (date time subject group blocknum blockcode trialnum trialcode response latency correct
    values.object_blue values.object_green values.object_red values.object_yellow)
</data>

How do I get the names of the items in the position, rather than the numeric value of the position? At the moment I put values.h1, etc, and got the numeric value of the position eg. 75?
Thank you!

> Is there a way of coding the data to show which image was shown in each of the 4 positions

Yes, log the values pairs values.h1 / values.v1 to values.h4 / values.v4 to the data file.

Thank you Dave that worked perfectly! Is there a way of coding the data to show which image was shown in each of the 4 positions, (i.e. have a data column for the 4 positions, showing which image was in each position) rather than having to have a column for the each of the potential images (which shows the position of the image if shown)? Because I have 10 trials = 40 images in total, which would be a lot of columns!

You need four <picture> elements, one per image. You can then randomize their positions per two <list> elements as already illustrated. You the response to the <trial> tells you which picture element was clicked. Here's the same thing using <text> elements as an example:

<values>
/ h1 = 0%
/ v1 = 0%
/ h2 = 0%
/ v2 = 0%
/ h3 = 0%
/ v3 = 0%
/ h4 = 0%
/ v4 = 0%
</values>

<list hpositions>
/ items = (40%, 60%, 40%, 60%)
/ selectionrate = always
</list>

<list vpositions>
/ items = (25%, 25%, 75%, 75%)
/ selectionmode = list.hpositions.currentindex
/ selectionrate = always
</list>

<text object_blue>
/ items = ("Blue Object")
/ txcolor = blue
/ hposition = values.h1
/ vposition = values.v1
</text>

<text object_green>
/ items = ("Green Object")
/ txcolor = green
/ hposition = values.h2
/ vposition = values.v2
</text>

<text object_red>
/ items = ("Red Object")
/ txcolor = red
/ hposition = values.h3
/ vposition = values.v3
</text>

<text object_yellow>
/ items = ("Yellow Object")
/ txcolor = yellow
/ hposition = values.h4
/ vposition = values.v4
</text>

<trial example>
/ ontrialbegin = [
    values.h1 = list.hpositions.nextvalue;
    values.v1 = list.vpositions.nextvalue;
    values.h2 = list.hpositions.nextvalue;
    values.v2 = list.vpositions.nextvalue;
    values.h3 = list.hpositions.nextvalue;
    values.v3 = list.vpositions.nextvalue;
    values.h4 = list.hpositions.nextvalue;
    values.v4 = list.vpositions.nextvalue;
]
/ stimulustimes = [0=object_blue, object_green, object_red, object_yellow]
/ validresponse = (object_blue, object_green, object_red, object_yellow)
/ inputdevice = mouse
</trial>

<block myblock>
/ trials = [1-10 = example]
</block>

It works exactly the same way with <picture> elements.