Re: [Swarm-Support] Input data structure

[Steve Railsback / Margaret Lang]

Eric McLeskey wrote:

> I am wondering if it is possible to import spatial data with multiple
> attributes per node into a SWARM model?  Here's an example of what I mean.
> Imagine a text file containing column headers and then corresponding rows
> like this:
>
> node, x, y, z, var1, var2, var3
> 1, 12.3, 20.1, 11.0, 5,6,-9999
> 2, 12.4, 20.2, 11.1, 7,8,-9999
> 3, 12.5, 20.3, 11.2, 9,5,-9999
>
> What would I need to do to use this type of data in SWARM?  Is there a swarm
> gui that can handle floating point spatial coordinates?  I currenlty have
> some routines that Paul Box wrote that create cell objects that can hold
> multiple attributes provided from ascii grid files which can then be
> displayed on a 2d raster but I don't think this would work for floating
> point data.  Any advice or suggestions?

I wouldn't be surprised if Paul's code DID work for float data. The only 
trick is to divide each coordinate by the total extent of the area in 
that dimension, and then cast the result to an integer. Offlist, I will 
send you some code (written by Steve Jackson) that does just that, and 
puts data very much like yours into an object that is a subclass of 
Discrete2d.

Steve R.

--
Lang, Railsback & Associates
Arcata, CA
707 822 0453