[Chameleon] Re: [OTT_OSGEO] chamelon-GRASS application site with URL

Massimiliano Cannata massimiliano.cannata at supsi.ch
Thu Sep 7 03:01:44 EDT 2006

Hi Ken,
I tested the site with IE version 6, but I didn't get any errors.. which 
version are you using?
For further information on the back processes, I will set up a web page 
with all instructions and procedures done for the demo realization.

I will inform you when all those information will on-line (for the end 
of October I guess).

Thanks for the feed back.


Ken Sanderson wrote:
> Hi, just a heads up that the site errors a lot with IE browser, 
> firefox however works fine. It would be nice if the site had more 
> information on what exactly it was doing from an instructional 
> standpoint.
> I have used Grass with chameleon in a windows environment and really 
> like its potential.
> Ken
> Massimiliano Cannata wrote:
>> Hi Dave,
>> speed is just a matter of hardware in this case :-(
>> Yes, basin are dynamically generated, when you click the map or a 
>> station it get the coordinate, then they are passed to GRASS.
>> With a new GRASS command that I wrote, the nearest pixel coordinate 
>> belonging to a river is selected, and the r.water.outlet is run. The 
>> raster basin generated is then converted in vector and represented.
>> For statistics, a MASK fitting the basin is generated and then 
>> r.stats, r.univar are run.
>> Also PanaChart php library was used to generate the graph.
>> That's all.
>> Again sorry for the slowness ! It will be better in future...
>> Massimiliano
>> Sampson, David wrote:
>>> Cool, Cool, Cool....
>>> I like it....
>>> I had an issue with popups, but that's normal when you block them....
>>> Worked well in firefox
>>> IS the watershed a pre defined boundarie, or is GRASS running the
>>> r.watersheds and creating it from scratch?  Does this get cached?  
>>> Or is
>>> it a predefined watershed boundary?...
>>> The ROI requirement was not clear at first, but trial and error worked
>>> that out....
>>> I perosnaly like zoom tools that can draw an extent box instead of a
>>> point and given zoom factor, but that's my preference
>>> Load time and processing time is a little slow, but that's secondary.
>>> I'm assuming that's across the board.
>>> For others that are going to try it out this is the process I tried
>>> 1. load page
>>> 2. zoom into an area (mag +) so you can see some individual pints
>>> 3. Chooce the ROI tool (far left icon)
>>> 4. draw ROI (if there is processing of the watersheds then I assume the
>>> larger the ROI more processing time)
>>> 5. Select watershed from point (Third from left)
>>> 6. Select a red point inside the ROI (notice the ROI only comes up when
>>> you switch tools and select point)
>>> 7. Tri the INFO button to learn more about each site (7th from left)
>>> So... Cool, I like
>>> What other widgets are connected to GRASS?...
>>> I look forward to the technical docs and seeing more people use it.
>>> -----Original Message-----
>>> From: Massimiliano Cannata [mailto:massimiliano.cannata at supsi.ch] 
>>> Sent: September 1, 2006 09:41
>>> To: GRASS user list; Chameleon Users; Ottawa OSgeo
>>> Subject: [OTT_OSGEO] chamelon-GRASS application site with URL
>>> Hi all,
>>> I would like to inform you that a demo site is now on-line to see how
>>> GRASS is run trough Chameleon.
>>> For instruction on how to use it, you can click the Help button.
>>> The URL is:
>>> Could you try to check if everything is working and eventually give 
>>> me a
>>> feedback?
>>> (It could result not too fast in map loading due to the low hardware
>>> configuration of the server)
>>> As soon as possible I will add a page with more technical details on 
>>> how
>>> to set up such a link.
>>> Thanks,
>>> and hope to see you in Lausanne.
>>> Massimiliano


Dr. Eng. Massimiliano Cannata
Responsabile Area Geomatica
Istituto Scienze della Terra
Scuola Universitaria Professionale della Svizzera Italiana
Via Trevano, c.p. 72
CH-6952 Canobbio-Lugano
Tel: +41 (0)58 666 62 14
Fax +41 (0)58 666 62 09 

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