RE: Variables

["Gary McCallister" <mccallis@xxxx>]

I didn't realize that what was suggested allowed the best of both worlds. I am 
not an accomplished programmer and didn't exactly follow what Mike is doing .

>>> wpetti@xxxx 11/02/01 03:54PM >>>
I agree completely, but part of what intrigued me about Mike's
message was that he provided a way to have the best of both
worlds: you can control a variable with a slider, AND at the same
time you can set things up so that the slider's value is
automatically converted into the value of a local or global
variable behind-the-scenes. That way you have the easy user
interface *and* the faster speed. I was wondering if it makes
sense to set up this automatic conversion in most scenarios or
only in a few particular types of situations where the increase in
speed makes it worthwhile to take the few extra moments to set up
the automated conversion.

There are many advantages to sliders in addition to the one you've
mentioned: for instance, sliders make it much easier to change
values when there are several variables in one procedure. Sliders
always report SOME value, so we avoid the situation where a user
might forget to input a value for a variable in the command
center.

Wendy


> -----Original Message-----
> From: Gary McCallister [mailto:mccallis@xxxx]=20
> Sent: Friday, November 02, 2001 4:40 PM
> To: MWcybercourse@xxxxxxxxxxxxxxx=20
> Subject: RE: Variables
>
>
> Another reason to use a slider is when you are modeling
> and want to see the effect of the variable over a range
> and want to run several trials in a row. It is tedious
> to type in new variables every time and that causes one
> to lose track of what is being investigated. Sliders
> allow one to rapidly change a variable and see what te
> difference is in the performance.



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