Dear Christopher:
Thanks for your suggestions and help.
For our project, I have implemented a small demo for animating SVG shapes on
MapBuilder. I used JavaScript to manipulated SVG shapes there.
I did not know much about GML specification. I am very curious about the
dynamic features you mentioned in your last email. I did not find the book
yet.
Could you tell me more information about the book? Do you have a electrical
edition of the book? Or any online documents that could be accessed?
Thank you so much.
Regards,
Chen CHEN
2007-07-09
On 6/25/07, Christopher Hunt <[EMAIL PROTECTED]> wrote:
On 25/06/2007, at 1:04 PM, Chen Chen wrote:
> sThe main idea of our project is to let "features" show at right
> locations
> on a 2D map, and animate if they are temporal variables in nature.
> For example, I want to show "rainfall" data on the map. Since the
> data is
> associated with measured time. I am trying to show a series of data
> in a
> specific period of time. And suggestions about that? Thank you.
From a GML perspective you're looking at dynamic features and
dynamic feature collections. These allow you to specify valid times
i.e. snapshots that the elements are recorded against. I thoroughly
recommend reading chapter 14 of the GML book published by Riley for
more background on this if you've not done so already.
> Christopher Hunt was looking at tracking moving vehicles and might
> have
> some ideas on how to store the moving objects in GML or similar.
> (Search
> the archieves for threads he participated in).
Further to the threads if there is something specific that I can help
you with then please feel free to contact me.
Kind regards,
Christopher
--
Chen Chen, M.S. Candidate
Department of Computer Science, Tsinghua University
RM.218, BLDG.13, Tsinghua Univ.
Beijing 100084
P.R.China
Tel: +86 10 62775641
Cell: +86 13810348283
Email: [EMAIL PROTECTED]
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