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Re: ION Question [message #43367 is a reply to message #43361] Thu, 07 April 2005 12:40 Go to previous messageGo to previous message
Michael Wallace is currently offline  Michael Wallace
Messages: 409
Registered: December 2003
Senior Member
>> The problem is that
>> everything is within a Java applet. The applet must be downloaded to
>> the client computer and then run on the client, not on the server.
>> Having a big, beefy server does not help you.
>
>
> Well, I'm naive enough (and don't know enough about Java, probably)
> to think this would be a Good Thing. Why is it a problem?

It depends on your audience. Our application was going to be rather
intensive and we decided to put that burden on the server rather than on
client machines. It was much easier to buy a single beefy server
instead of putting up a message to all our end users saying "thou shalt
use a much faster processor and more memory."


>> We played around with ION some, but we just found it too hairy to work
>> with. We opted for doing our own web server programming and dynamically
>> call IDL when necessary to make a plot, file or movie and serve that
>> back to the end user. You don't have true interactivity in this case,
>> but you have enough to take a user's selections and generate something
>> on the fly based on that input.
>
>
> Yeah, I think interactivity is critical. We can do without some
> of the bells and whistles, I guess. But navigating images quickly
> and being able to annotate them is essential.

How much of this needs to be dynamic and how much can you pre-generate
and store off to the side? If there's a way to create images or data
sets ahead of time, I'd recommend doing that and then serve up the
image/data set when requested. To the end user, it will appear like
it's being created on the fly. If you were using a database behind the
scenes, everything could be stored in there, including annotations and
other meta-data, of course I'm probably going way beyond what you had in
mind. :-p

-Mike
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