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

raghavan raghavan at media.osaka-cu.ac.jp
Sat Sep 2 07:11:11 EDT 2006

Hi Massimiliano,

Great work. Look forward to see you in Luassanne
and exchanges notes on some similar work that
we have done here.

Kind regards


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

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