no image should be loaded for "?" in list

[liwenna]

Oooh, if I understand you right now, that changes the whole story!

There's only 1 object per trial but there are 14 possible positions?
In that case you'd be better of defining the positions in a list.

As you know the imageobject asks for a value for x and y on the
propertiestab to determine the position. You can also store these
values in a list under two attributes called, for intance, stimx and
stimy.
In the object properties tab enter [stimx] and [stimy] as the values
for x and y and for each trial the slidelocation will be subtracted
from the list.
If you want a certain object to be in a specific location on each run
you should create 'stimx' and 'stimy' in the same list as your
imageobjects are defined in, but if you want the positions to be
randomized on each trial, stick 'stimx' and 'stimy' in a seperate
(randomized) positionslist that is nested in the triallist.

I hope that the above is indeed what you need!

Greets,

liw

On Nov 6, 12:40 pm, Tobi <tobias... at gmail.com> wrote:
> Thank a lot,
>
> it is a good idea with the different slide states. Actually there is
> always only one object displayed, so I don't need to specify the
> number. However, I can only make up to 10 slide states apparently. As
> I have 14 different locations I would need 14, though...
> Is there a way to have more than 10?
>
> On 5 Nov., 22:39, liwenna <liwe... at gmail.com> wrote:
>
> > How about.....
>
> > adding an attribute to your list that holds the number of bitmaps that
> > you need to use in that level/trail called say... "nbitmaps" and give
> > the slide element multiple states that are called 1 2 3 4 etc. and
> > hold 1 2 3 or 4 images. Then set the slidestate to [nbitmaps] and
> > according to the value of 'nbitmaps' it will show the slidestate with
> > 1 2 3 or 4 imageobjects in it. As a consequence you might also need to
> > specify the x and y values (positions) of each imageobject in the
> > triallist instead of in the properties of each imageobject (as I think
> > you got them now?). I am not entirely sure if e-prime will allow the
> > slideobject to run if not all referenced values for all slidestates
> > are being adressed in the triallist (as would be the case for say
> > slidestate 4 in a nbitmap = 3 trial) but you can give it a shot; and
> > also, depending on your actually number of possible positions, this
> > might be not a feasible option... but yeah... it's just a suggestion.
>
> > Alternatively you might be able to solve it somehow by drawing the
> > entire canvas for each trial in an inline but that definitly is a lot
> > of work.
>
> > Then there is a vague notion somewhere in my head that you can bring
> > imageobjects to the front or sent them to the back... but I have no
> > friggin clue as to how to do that 'dynamically' based on each trial's
> > demands....
>
> > That would be all for the moment ...
>
> > best,
>
> > liw
>
> > On Nov 5, 7:42 pm, Tobi <tobias... at gmail.com> wrote:
>
> > > Hi together,
>
> > > I have a problem as fallows: I have a display containing n positions
> > > as specified in the "slide element". Which bitmap is supposed to be
> > > placed on which position is then defined in a list. Sometimes, I wish
> > > to have no bitmap at all on some positions. Therefore I left the "?"
> > > in the list. An error message occurs saying "Filename or image display
> > > has not been set". It is the same if I leave a blank in the respective
> > > cell.
>
> > > I also thought about displaying en empty bitmap (that is in the color
> > > of the background), however the positions are superimposed. Therefore,
> > > te bitmaps would only be partly displayed.
>
> > > Maybe there is an easy solution, I didn't find any.
> > > Thanks a lot and cheers,
> > > Tobi
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