you mean use a native vertical scrollbar?  That would seem to create a
"mixed metaphor" ui; i am guessing you can come up with a better
consistent metaphor. It took me quite a while to notice the vertical
scrollbar, and I'm puzzled why it is "read only".

farfetched, but what if you made the timeline into a "barrel" that
rolled away at the top and bottom (images shrinking) to indicate there
is more present?

David Huynh wrote:
> Jon Crump wrote:
>   
>> On Sat, 21 Mar 2009, David Huynh wrote:
>>
>>   
>>     
>>> Because I'm counting on most timelines having one severely dominant
>>> dimension...
>>>
>>> David
>>>     
>>>       
>> Love the new dragging functionality! I take your point about timelines in 
>> general privileging the linear dimension: and this is as it should be. The 
>> exploration of that linear dimension _is_ the utility of a timeline. 
>> Having said that, however, It might be helpful to subvert the linear view 
>> just a little, and a two dimensional summary might be a way to do it as 
>> David Karger has suggested.
>>
>> At the very least, I think there ought to be some sort of indication that 
>> there is more above or below the line. Making your existing indicator, the 
>> 'scroll' bar on the right, permanently visible wouldn't take up much room 
>> and would provide the necessary prompt.
>>
>> Thanks for the further innovations.
>>
>>   
>>     
> I've made the highlight of the lower band reflect the vertical visible 
> portion of the upper band, and I've made the vertical scroll bar visible 
> all the time (if scrolling is possible).
>
> http://simile-widgets.googlecode.com/svn/timeline/trunk/src/webapp/examples/compact-painter/compact-painter.html
>
> I personally don't think the highlight of the lower band does a good job 
> of looking like an overview, at least in its current implementation. 
> Unlike a world map, which immediately looks like an overview unless 
> you're from another planet, any rectangle in the lower band with a few 
> pixels shaved here and there doesn't immediately suggest that it 
> reflects the vertical scrolling state of the upper band.
>
> Larry also suggested to just use a native scrollbar. Would you prefer that?
>
> David
>
>
> >
>   

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