Hi Mike, Bruce,
We went to that discussion a couple of year ago, and by that time there was some strong opinion
against storing raster data on databases, but it look like time has changed things a little bit. Am
I right to say that? I can see basically three reasons for that.
1. Data volume.
bits. And lots of
channels (bands). And alpha masking. And arbitrary metadata blobs
(geospatial and otherwise).
-mpg
-Original Message-
From: discuss-boun...@lists.osgeo.org
[mailto:discuss-boun...@lists.osgeo.org] On Behalf Of Lucena, Ivan
Sent: Friday, August 21
Hi Landon,
It has been an interesting discussion, algorithms copyrights, most used
formats, limitations, internal details, etc. I definitely agree that it got out
of control and we should end some place but I and going to give you a quick
answer.
What are the limitations of Geotiff/JPEG
spoke about some of these technologies
being somewhat obsolete what with the new network and bandwidth speeds
available for publishing.
bobb
Lucena, Ivan ivan.luc...@pmldnet.com wrote:
But you can't compress data types other than byte in JPG. Can you do
that in JP2K
Here goes another one from TerraLib:
http://www.dpi.inpe.br/terralib/html/v320/html/group___math_const.html
---Original Message---
From: Wolf Bergenheim wolf+gr...@bergenheim.net
Subject: Re: [OSGeo-Discuss] RE: Open source TIN code?
Sent: Mar 02 '09 19:46
Again this is GPL,
joining two tiles)
5) Partial tiles - when you split up an image, it rarely fits perfectly into
your chosen tile size. What do you do with the leftovers?
More?
Another 2 cents,
Roger
From: [EMAIL PROTECTED] on behalf of Lucena, Ivan
Paul,
That is not the answer your are waiting for but...
IMHO, once you overcome the mythical concept that a database server will always
perform slower than a direct file access then Spatial is not special anymore!
[who said that?] and you can think on the benefits just like a banker or an
Frank,
My point is that a tile caching approach is really comparing tile caching
performance to rendering-on-demand performance while I think the original
point was that rendering-from-database and rendering-from-filesystem could
have similar performance for input raster data.
D'accord.
users from disclosing the results of benchmark tests. Be careful how you
represent these results.
Jason
-Original Message-
From: Lucena, Ivan
Subject: [OSGeo-Discuss] Raster data on RDBMS
I would like to return to a discussion that we had months ago about raster
Hi Joe,
I've been researching OS for about one year now and have seen the
light. Also with an anticipated move outside of the United States soon
(Brazil, Italy, Greece or Australia), I think having the skills to
I think I'll leave my rant at that for now - I am also interested in
Hi There,
I would like to return to a discussion that we had months ago about raster on
RDBMS. But this time I would like to present some number.
As long as I could recall there was basically two major arguments contrary to
storing raster on RDBMS. One very pragmatical: Why waste precious
comparison. Even if you end
up with the same numbers for both processes, I'll still be impressed,
since I assumed Oracle would have a higher overhead.
P.
On Tue, Oct 28, 2008 at 9:54 PM, Lucena, Ivan [EMAIL PROTECTED] wrote:
Hi There,
I would like to return to a discussion that we
Last year the organization published a very nice report. That will
certainly take some time do put all the number together as nice I they
did before but I believe that it will help someone like me, who did not
attended, to have a good perspective of what we should expect for Sydney.
Dave
George,
I am using to build this system PostgreSQL + PostGIS, QGis and PHP. In
advance i would like to thank David Bitner who helped me alot by letting
me use his geocoding function for PostGIS.
I guess you should also find support from a native FOSS project in your
country, terralib.org.
Gavin,
My South Africans friends here in the US and I are deeply concern about
that situation too. I just wanted to add that thanks to economic growth
and social reforms, Brazil is now a moving target on what concern wealth
concentration index. Brazilian business, factories and agriculture
Sorry. I'm sick. Can't go.
Raj Singh wrote:
I'll be there by 9!
---
Raj
On Apr 15, 2008, at 9:51 PM, Christopher Schmidt wrote:
AAG is happening in Boston this week, and in an effort to make some
things happen, I'm planning to have a social meetup this Thursday with
anyone who is interested
Hi Randy, Bruce,
That is a nice piece of advise Randy. I am sorry to intrude the
conversation but I would like to ask how that heavy raster
manipulation would be treated by PostgreSQL/PostGIS, managed or unmanaged?
Best regards,
Ivan
Randy George wrote:
Hi Bruce,
On
: Lucena, Ivan [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 19, 2008 2:59 PM
To: [EMAIL PROTECTED]; OSGeo Discussions
Subject: Re: [OSGeo-Discuss] OS Spatial environment 'sizing'
Hi Randy, Bruce,
That is a nice piece of advise Randy. I am sorry to intrude the
conversation but I
Me too. Some time I feel like blogging.
Cameron Shorter wrote:
I like the idea and would like to provide occasional content.
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Discuss mailing list
Discuss@lists.osgeo.org
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Bruce,
That sounds like removing the F from FOSS or should I say, that is a
bazaar inside a cathedral. :)
Seriously now, IMHO, as an FOSS contributor and a commercial software
developer that uses FOSS, I believe that there is a complicated process
of getting to the point to embrace a FOSS
a little light on the cultural differences that could
lead to misunderstanding from outsiders. The article does mention Forum
participation and language barriers as an issue.
Ciao,
Ivan
Paolo Cavallini wrote:
Lucena, Ivan ha scritto:
I believe that TerraLib would deserve a better technical
Hi Bruce,
[EMAIL PROTECTED] wrote:
wrt the Brazillian TerraLib toolkit mentioned in your paper:
- I've had a quick look at the web site. The product appears to be quite
mature and functional.
- Has anyone from this list had a technical look at the products and
like to share their
Hi all,
I am *not* going to disagree with Andrea, Gilberto, Paul, Howard or
anybody else. I just want to point out a interesting open source
business model that is making a big impact this days. I am talking about
Xen [http://en.wikipedia.org/wiki/Xen].
I keep reading news and more news
Landon,
There it goes:
Landon Blake wrote:
Does anyone know if there has been work on GIS Data Models besides any
organization other than ESRI?
(http://www.esri.com/software/arcgis/geodatabase/about/data-models.html)
There it goes:
SPRING: Integrating Remote Sensing and GIS with
Sampson,
I am not a GML guru and I don't know if a binary version exists already,
but I would imagine that HDF5 would be a excellent choice by its own
hierarchical nature. I mean, we can use GML as a schema to store the
data in binary format in the HDF5 format.
Best regards,
Ivan
Sampson,
Frank,
I was watching this PyTables video
[http://www.carabos.com/videos/pytables-1-intro] and one thought came to
my mind: HDF5 can easily be used to store and retrieve vector, raster
and attribute tables. We would need to standardize a schema tough.
Best regards,
Ivan
PS. I am not that
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