Can't get AddObservation to work, or plague of the Type Mismatch
Michiel Spape
Michiel.Spape at nottingham.ac.uk
Wed Mar 9 16:39:01 UTC 2011
Hiya,
Well, let's see how far you'll get :) I thought I might add that I generally have two global variables (i.e. declared in the User tab), one being TrialNum, which just adds one up to the trial, and one TrialsCorrect.
So, every trial, I tend to have an inline with the following:
TrialNum = TrialNum + 1 'just so that number of trials is counted, also useful if you want to present a break
TrialsCorrect = TrialsCorrect + myStimulus.ACC 'which saves one IF/THEN object.
Visual basic tends to be a bit tricky in terms of variables being converted on the spot, whether you like it or not, but if you just want to know the percentage, the following tends to work pretty well:
TrialNum = 30 'just as an example, 30 trials done so far
TrialsCorrect = 10 'just as an example, 10 trials correct
Debug.print cint(cstr(trialscorrect / numtrials / 0.01)) "% correct"
This returns "33% correct" (in the output).
So, if you would just dump that into a new attribute (don't add it to the list, it confuses things sometimes):
c.SetAttrib "thismuch", cint(cstr(trialscorrect / numtrials / 0.01))
and have a slide, saying "You had [thismuch]% correct", you're basically there (just tested it). Not to say you can't do the same with summation objects, but the above, taking out my debug, takes only 3 lines of code (excluding 2 lines of user script variable declarations).
Cheers,
Mich
Michiel Spapé
Research Fellow
Perception & Action group
University of Nottingham
School of Psychology
www.cognitology.eu
-----Original Message-----
From: e-prime at googlegroups.com [mailto:e-prime at googlegroups.com] On Behalf Of Micah
Sent: 09 March 2011 16:06
To: E-Prime
Subject: Re: Can't get AddObservation to work, or plague of the Type Mismatch
Hi Michiel,
Thanks for the useful reply! Ogperf and ogaware are actually list
objects, and the related code is designed to log stops and successful
error reports. So the first bit of code should be resolving to either
a '1' or a '0' for either accurate/inaccurate stop or correct error
report/missed error report. That being said I see your point with the
need to simplify and had wondered if I could get by without the
summation object. My worry is that, sense the accuracy data is not
generated directly by the list or procedure, I need this summation
object to collect data from the ogperf ogaware inline. The last bit
( c.SetAttrib "errorawareness",
Format((errorawareness.Mean),"Percent")) is supposed to then format
the summation object for placement in the end of block report
("Congratulations, you successfully inhibited on [stopaccuracy] of
trials and reported your errors [erroraware] of the time").
Will try to wrap my head around how to do this without the summation-
appreciate your help!
On Mar 9, 4:55 pm, Michiel Spape <Michiel.Sp... at nottingham.ac.uk>
wrote:
> Hiya,
> Ugh, lots of code. Forgive me, like many coding people, I tend to be lazy and simply won't read long threads. I've never had any use for this "summation object" deal, but your code is really quite confusing:
>
> > > dim stopaccuracy as Summation
> > > dim erroraware as Summation
> > > c.SetAttrib "stopaccuracy", Format((stopaccuracy.Mean),"Percent")
> > > c.SetAttrib "errorawareness", Format((errorawareness.Mean),"Percent")
> > > stopaccuracy.AddObservation c.GetAttrib("ogperf")
> > > errorawareness.AddObservation c.GetAttrib("ogaware")
>
> What exactly are you doing here? Stopaccuracy is both a "summation" and an "attribute in a list". Errorwareness is only semi-overlapping with this attribute, although I see no reason why you would want this. Ogperf is not even an attribute but a local variable. If you have declared it somewhere, it probably looks into a list anyway, finds a question mark, tries to put this into stopaccuracy. Thus, what you get is StopAccuracy.AddObservation ?, or, dbl(?), which doesn't work either.
>
> If you want to find out what's going on with the mismatch (one of the more simpler things to solve):>stopaccuracy.AddObservation c.GetAttrib("ogperf")
>
> Then try change this into:
> stopaccuracy.AddObservation 0
> if the latter works but the former doesn't, then c.GetAttrib("ogperf") probably receives a string instead, or, in other words, Ben would be right. See what ogperf is by doing "debug.print c.GetAttrib("ogperf"). So, try beginning simple with working code, then add - rather than the opposite.
>
> So, start with as clean and working code as possible. My suggestion would be to start with getting rid of the summation stuff (after all, what more is stopaccuracy.mean then merely numberofstopaccuratetrials / numberoftrials?) and the c.getattrib/set stuff until you can get everything working on one level.
> Cheers,
> Mich
>
> Michiel Spapé
> Research Fellow
> Perception & Action group
> University of Nottingham
> School of Psychologywww.cognitology.eu
>
>
>
>
>
>
>
> -----Original Message-----From:e-prime at googlegroups.com[mailto:e-prime at googlegroups.com]On Behalf Of Micah
> Sent: 09 March 2011 15:19
> To: E-Prime
> Subject: Re: Can't get AddObservation to work, or plague of the Type Mismatch
>
> Hi Ben,
>
> Sincere thanks for your suggestion. Helped me to feel like I'm getting
> somewhere in my understanding of E-basic, as I had the same idea.
> Sadly neither CInt or CDbl used in that way change the error. I also
> tried declaring erroraware and stopaccuracy as doubles, and tried
> converting them into new variables that would be numbers. I'm not sure
> I did that correctly however.
>
> Thanks for your help- i'll be really excited if we can solve this.
>
> On Mar 9, 3:17 pm, ben robinson <baltimore.... at gmail.com> wrote:
> > try changing them to:
> > stopaccuracy.AddObservation CInt(c.GetAttrib("ogperf"))
> > errorawareness.AddObservation CInt(c.GetAttrib("ogaware"))
>
> > or CDbl(...) if CInt(...) isn't what you need.
> > i think the problem might be that when you c.GetAttrib the value it pulls
> > from the list is understood as a string, rather than some sort of number...
>
> > On Wed, Mar 9, 2011 at 8:34 AM, Micah <ucfmi... at gmail.com> wrote:
> > > Hello,
>
> > > This is probably a very easy to solve problem, but it's just about
> > > beaten me down. I am trying to make a training script for my error-
> > > awareness paradigm that can log inhibition and error-awareness
> > > performance and then report these to the subject at the end of the
> > > trial. The task is very simple and works fine, as does the performance
> > > logging. I can't seem to get my summation object to work though-
> > > everytime it gives me a 'type mismatch'. I've tried creating a
> > > variable from the logging vars in a double format but that does not
> > > fix it. Can someone take a look at my code and see what's up?
>
> > > I start with the following setup inline and usertab code:
> > > 'setup inline
> > > set stopaccuracy = New Summation
> > > set erroraware = New Summation
>
> > > 'usertab
> > > dim killme as integer
> > > dim stopaccuracy as Summation
> > > dim erroraware as Summation
> > > dim ogperf as double
> > > dim ogaware as double
>
> > > My inline that logs awareness and performance, and (is supposed to)
> > > fill the summation object with these information for reporting to the
> > > subject, looks like this:
>
> > > If c.GetAttrib("trialtype") = "lure" then
> > > if TextDisplay1.RT = 0 then
> > > c.SetAttrib "ogperf", 1
> > > else
> > > c.SetAttrib "ogperf", 0
> > > end if
> > > end if
>
> > > if c.GetAttrib("awaretrial") = "1" and killme = 1 then
> > > if TextDisplay1.RESP = "2" then
> > > c.SetAttrib "ogaware", 0
> > > else
> > > c.SetAttrib "ogaware", 1
> > > end if
> > > end if
>
> > > if c.GetAttrib("ogperf") = "0" then
> > > killme = 1
> > > else
> > > killme = 0
> > > end if
>
> > > stopaccuracy.AddObservation c.GetAttrib("ogperf")
> > > errorawareness.AddObservation c.GetAttrib("ogaware")
>
> > > Debug.Print stopaccuracy.Mean
> > > Debug.Print erroraware.Mean
>
> > > c.SetAttrib "stopaccuracy", Format((stopaccuracy.Mean),"Percent")
> > > c.SetAttrib "errorawareness", Format((errorawareness.Mean),"Percent")
>
> > > It's these lines that give me the type mismatch:
> > > stopaccuracy.AddObservation c.GetAttrib("ogperf")
> > > errorawareness.AddObservation c.GetAttrib("ogaware")
>
> > > Link to script:http://bit.ly/hKCcmo
>
> > > Best,
> > > Micah
>
> > > --
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