Visual Analog scale position logging

Mon May 5 20:27:12 UTC 2014

Matt,

There are no significant differences between the version 1 and version 2
scripts. The line numbering could be slightly different, so apply the
following rules if the numbers are not clear:

- The Dim statements can be placed at the start of the DragScale function.
Typically below the other Dim statements.
- The two initialization lines should be placed before the while-loop. For
example, just before the Mouse.SetCursorPos line.
- The third part should be placed at the end of the while-loop. I.e.,
before *Wend*.

Best
Paul

On 5 May 2014 16:58, Matt Riddle <matthewpriddle at gmail.com> wrote:

> If I'm working with the Eprime 1 version of this, could I just in theory
> take the lines from the package and insert them inline in the eprime 1
> script?
>
> Thanks,
>
> -Matt
>
> On Monday, May 5, 2014 3:57:39 AM UTC-4, Paul Groot wrote:
>>
>> Hi Matt,
>>
>> I think that would be possible by modifying the DragScale function in the
>> VAS.epk2 package. A while-loop is used in this function to refresh the
>> needle when it is moved around. It's not very difficult to add a few lines
>> that will save the needle position periodically. The modified attachment
>> should do something like that. The 1-sec positions are now saved as
>> attribute with incremental suffix (xyz.1, xyz.2 etc.). Another option would
>> be to force logging at each interval by inserting a call to c.Log. In that
>> case it is not required anymore to add the suffix, so all results would be
>> inserted into the same xyz column of the output file. However, you will get
>> more rows instead of columns.
>>
>> Best
>> Paul
>>
>> P.S. These are the inserted lines:
>>
>> *line 10+11:*
>> Dim lSavePosAt As Long ' next time to save position
>> Dim lSavePosCount As Integer ' counter to
>>
>> *line 41+42:*
>> lSavePosAt = Clock.ReadMillisec + 1000 ' save position every second
>> lSavePosCount = 0
>>
>> *lines 133-141:*
>>     If Clock.ReadMillisec>=lSavePosAt Then
>>         lSavePosAt = lSavePosAt + 1000
>>         lSavePosCount = lSavePosCount + 1
>>         percent = 100*((ptPress.X-VAS_SliderDummy.Left)/sw)
>>         If percent<0 Then percent = 0
>>         If percent>100 Then percent = 100
>>         ' save the percent value
>>         c.SetAttrib attributeName & "." & CStr(lSavePosCount), percent
>>     End If
>>
>>
>>
>>
>> ...
>>
>>
>>
>> On 3 May 2014 17:00, Matt Riddle <matthew... at gmail.com> wrote:
>>
>>> Hi,
>>>
>>> I'm fairly new to anything beyond basic ePrime functions, so I apologize
>>> if this seems like a simple question.
>>>
>>> I'd like to implement some form of Paul Groot's visual analog scale, but
>>> what I would like eprime to do is record the position on the scale every
>>> second or so.
>>> So let's say the participant was letting his mind wander, and was
>>> continuously moving the scale up and down according to how they were
>>> feeling, and then
>>> having ePrime log wherever the indicator is on the scale. What would be
>>> the easiest way to go about doing this? I don't know if the scale treats
>>> the indicator
>>> as a mouse cursor or what, so I'm a little clueless what to do.
>>>
>>> Thanks in advance for your help!
>>>
>>> -Matt
>>>
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