Re: [OSGeo-Discuss] IG Geospatial - Agenda and online connecting details

[Andy Turner]

Sorry, what time is the meeting? Somehow, I can't find this detail...

Thanks,

Andy
http://www.geog.leeds.ac.uk/people/a.turner/index.html


From: Discuss [mailto:discuss-boun...@lists.osgeo.org] On Behalf Of Suchith 
Anand
Sent: 22 March 2018 10:50
To: geofor...@lists.osgeo.org; discuss@lists.osgeo.org
Subject: [OSGeo-Discuss] IG Geospatial - Agenda and online connecting details


The Geospatial IG are meeting at RDA11 later today to keep building ideas for 
the global research agenda for Geospatial Data Science .



The agenda and online connecting details at

https://rd-alliance.org/ig-geospatial-rda-11th-plenary-meeting



See you all soon.



Best wishes,



Suchith





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Re: [OSGeo-Discuss] [Marketing] Proprietary GIS on our OSGeo website

[Andy Turner]

Hi,

It is possible to come up with a set of tasks and tests used to confirm and 
classify what software are capable of. Working out what is included and how 
this is included is non-trivial and I think this is in the domain of the Open 
Geospatial Consortium and the standards defining organisations generally. 
Sorry, I've not been engaging there of late, but when I did interoperability 
was the primary goal and standardisation of data and services and how to use 
the services was key. Anyway, there can be other descriptors of 
software/services too, like the nature of the user interfaces (whether there 
are optional GUI/command line/whether things operate via web protocols and 
indeed whether it is more a single desktop application or something that has 
more of a client/server architecture, whether it is modular, whether there is 
an API (and what the nature of this is), what language(s) it is written in and 
possibly loads of other things).

Sorry, I digress, let me try to get to the point...

If there was a breakdown of what functions there are and how the software works 
then this may help in identifying not only similarities between one FOSS 
offering and other proprietary ones, but between FOSS ones. This could be 
useful in a number of ways, one of which might be identifying whether there is 
a single FOSS offering that does everything that a user currently wants to do 
(and may do already using other software).

Migrating from using one set of software to using another to perform the same 
tasks can be quite a job for any organisation. It might require a significant 
amount of research, the development of educational resources and training.

It would be great if there was a set of educational resources that show how to 
perform tasks in different software (and indeed using different programming 
languages). Whatever the platform, there are metrics on the complexity the 
level of automation and the computational efficiency that can be developed. 
With a set of metrics it would be easier to measure the similarity and 
difference between software. 

Sorry, having rambled on I realise that I have gone a bit off topic, I expect 
this has already been suggested and is being worked on, I've dared not to read 
the entire thread before posting, and I have very little time to help get this 
in place! Also I have not replied to the very last post on this thread but one 
a bit back as these others have spun off in other important directions.

Anyway, you have my moral support, thanks for all your efforts developing the 
OSGeo website, educational resources, services and software.

Best wishes,

Andy
http://www.geog.leeds.ac.uk/people/a.turner/index.html
  


-Original Message-
From: Discuss [mailto:discuss-boun...@lists.osgeo.org] On Behalf Of María Arias 
de Reyna
Sent: 21 September 2017 09:23
To: Jody Garnett ; Maria Antonia Brovelli 
; OSGeo Discussions ; 
OSGeo-Marketing ; Helmut Kudrnovsky 
Subject: Re: [OSGeo-Discuss] [Marketing] Proprietary GIS on our OSGeo website

On Thu, Sep 21, 2017 at 10:15 AM, Sandro Santilli  wrote:
> On Wed, Sep 20, 2017 at 08:33:05PM -0700, Jody Garnett wrote:
>
>> How much of your initial concern was providing a link? Or is it just 
>> displaying the name (switching to MapInfo for the example here). It 
>> would be kind of nice if the it behaved like a keyword, and linked to 
>> the project page short listing all the projects that one can migrate to from 
>> MapInfo.
>
> It's different degrees of annoyance. I guess a brand-less and 
> link-less list of names of proprietary products would not be too 
> "offensive" for me (assuming spam filtering lets it pass) but I'd 
> still prefer an hidden keyword. Something that you never see written 
> but is recognized by the search engine to give you back a similar
> software: you search for  you get .
>
> The "like Photoshop, only better" motto I like even when it contains 
> the name because it explicitly bashes it :)

That would work very good if we use for example google ads. But still, for 
people who are lookiing for "how to migrate to FLOSS", a non-linked name could 
be useful. I mean: they exist, they are there, they are a fact. We don't need 
to promote them to be able to say "if you already use this, you can move to 
this".

And now I realize I put a link on the GeoNetwork page just because I copypasted 
from another project :) Bad María, bad.
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Re: [OSGeo-Discuss] Open Source Road Safety Software

[Andy Turner]

Hi

In the UK there is centrally collated personal injury road accident data and 
this is made available via the UKDA. I have a web page that links to some of 
the data for Great Britain:
http://www.geog.leeds.ac.uk/people/a.turner/data/Stats19/Stats19.html

Personal injury road accidents are only a fraction of all road accidents. I had 
hoped that there would be a single store of georeferenced data for all 
insurance claims by now, but I don't think there is.

HTH

Andy
http://www.geog.leeds.ac.uk/people/a.turner/index.html
 

-Original Message-
From: discuss-boun...@lists.osgeo.org [mailto:discuss-boun...@lists.osgeo.org] 
On Behalf Of Anne Ghisla
Sent: 27 November 2013 13:17
To: discuss@lists.osgeo.org
Subject: Re: [OSGeo-Discuss] Open Source Road Safety Software

On Tue, 26 Nov 2013 14:46:41 +
simon.tremb...@cspq.gouv.qc.ca wrote:

 Hello,
 
 I am currently looking for an open source software that can do road 
 safety analysis, something described like that private software:
 http://www.tes.ca/road_safety_software.html.
 
 It is very specialized but maybe someone can help me looking in the 
 right direction.

Hello Simon,

I think it is possible to write an open source equivalent of this software, 
using e.g. PostGIS or SpatiaLite functionalities. But this is only half of the 
task.

In my experience, the most difficult part will be the collection of traffic and 
incident data. I have no experience with this, but maybe someone on the list 
can give a more informed answer.

 Thank you,
 
 Simon

Kind regards,

Anne
--
http://wiki.osgeo.org/wiki/User:Aghisla
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Re: [OSGeo-Discuss] Call for Papers for FOSS4G 2013 Academic Track

[Andy Turner]

Hi,

There are many ways to do this.

In my experience some academic conferences that have peer reviewed outputs have 
developed the following Modus Operandi (I don't know how normal this is):
1. Abstracts and/or Modified Abstracts or Full Papers (and sometimes Posters) 
are published in Conference Proceedings (each having been selected based on a 
submitted Abstract).
2. A selection of Full Papers are then invited to be submitted for review to a 
journal special issue. (This sometimes requires that they are reformatted.) 
Only those that then get through a peer review process are then published in 
the peer reviewed journal special issue.

An academic, should get credit for:
1. Having an Abstract accepted and presenting a Full Paper or Poster. (Posters 
tend to be worth less in some respects, but they are still good. Having 
something in the Conference Proceedings is good even if a presentation at the 
conference does not happen, though it is usually expected that a presentation 
of some form is made at the event.)
2. Getting an article published in a peer reviewed journal special issue.

I have had articles rejected at the final stage which is a pain, as is not 
being invited to submit a Full Paper to the special issue review process. 
However, a rejected article can be published online and for additional credit 
by any academic so long as it has evolved sufficiently from what made it into 
the proceedings. Peer reviews of rejected articles although rejections can be 
useful in any case. Contributors may decide to re-submit an article for peer 
review elsewhere if that seems appropriate.

FWIW, I think that adding the step of inviting and reviewing Abstracts is a 
good one. If this is done far enough in advance then folk can outline what they 
plan to do before doing it. There is a danger though with this, that come the 
event, not so much progress has been made and there is little to present. To 
avoid this, some conferences only allow submission of work that has been or is 
largely completed, but this becomes a less attractive option with increasing 
time from the Abstract submission/decision date and the date of the event/date 
when Modified Abstracts or Full Papers are due.

One further point is that IMHO, the more open the review process is, the better.

HTH

Andy
http://www.geog.leeds.ac.uk/people/a.turner/
 

-Original Message-
From: discuss-boun...@lists.osgeo.org [mailto:discuss-boun...@lists.osgeo.org] 
On Behalf Of b.j.kob...@utwente.nl
Sent: 25 January 2013 11:26
To: discuss@lists.osgeo.org
Subject: Re: [OSGeo-Discuss] Call for Papers for FOSS4G 2013 Academic Track

Dear Venka and Massimiliano,

I feel we have to defend the Foss4G2013 AT a bit here (as AT co-chairs we
should ;-)

It is actually not true that Previous FOSS4G's had abstract review by the
academic committee
and selected authors were asked to submit full papers closer to the
conference dates.
Both in the 2010 and 2011 conferences we had submission of full papers,
not abstracts. 

The reason for this is that academics nowadays need to publish, if we want
or not, and that means we have to offer a possibility of official
publishing for the AT papers. The only way to achieve that is have journal
outlets secured well beforehand and for that you need to set up a Journal
Type submission and reviewing system, which means selection of full
papers. Having to first select promising abstract, then ask these people
to write full papers, and then have these properly peer-reviewed, all
before the conference publication deadline, would mean we'd need an even
earlier deadline.
This by the way is nowadays accepted academic practice at conferences that
offer Jopurnal publication outputs.

I agree that 7 months before the conference seems like a very early
deadline, but for the reviewing process, the editing and processing of
accepted papers and preparation of manuscripts for publication, it
actually is quite a tight time table. Note that the advantage is that if
your paper is accepted, you are assured of it being actually published at
the conference date, something may academics are keen for...

Note also that the normal (non AT) tracks at Foss4G continue to offer
submission and reviewing based on abstracts.

We will have this year (as in previous years) an Academic Committee. These
are the people that will be asked to do the full paper reviewing, and we
have just this week invited candidates and have asked them to agree to do
this important task. The list will appear on the site once the reviewing
process starts.

I hope this answers some of your questions.


For further questions, comments and remarks, please don't hesitate to
contact the Academic Track co-chairs:

* Franz-Josef Behr (Stuttgart University of Applied Sciences):
franz-josef.b...@hft-stuttgart.de
* Barend Köbben (ITC-University of Twente): kob...@itc.nl



 



On 2013/01/23 18:49, Massimiliano Cannata wrote:

From the web page:



We invite academics and researchers to 

RE: [OSGeo-Discuss] Training and certification

[Andy Turner]

3. To technically certify a product or application -  (e.g. as a sort of 
endorsement that the technology meets some OSGeo standard)

I don't understand this. The following standards come to mind: Does the product 
output OGC compliant data? Uses compatible versions and licenses?


Maybe to do with having a sufficient help system and documentation (support, 
tutorials, source code comments) for installation, development and use.


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RE: [OSGeo-Discuss] offline maps

[Andy Turner]

Hi,

Is there more to this than loading the data and the data server technology onto 
a machine you take into the field and configuring the clients on that machine 
to use the local data and server technology?

Do you take a network with you? You could for example network and rely on one 
server which talks to many client machines using that network?

I don't know about using Google clients cached with Google data, but if the 
data is free, or you have license for use and can take them, I'm sure you can 
configure the client/servers so long as they too are open or you have a license 
for their use and are installable on the machines.

Good luck Carlos!

Andy
http://www.geog.leeds.ac.uk/people/a.turner/
 

-Original Message-
From: discuss-boun...@lists.osgeo.org [mailto:discuss-boun...@lists.osgeo.org] 
On Behalf Of carlos sousa
Sent: 09 November 2010 11:59
To: OSGeo Discussions
Subject: [OSGeo-Discuss] offline maps

Hello OSGEO enthusiasts

I would like to create, starting from the point where hard disk space
is not a problem, a repository of raster maps that can be accessible
offline, when for exemple, we have to go to the field and do
georeference tagging and mapping.
When in the field, there is no broadband internet or it's limited to
2.5G communication which is very slow, even for the best OGC server
available.
So, the ideia is to have a repository of maps, like the terrain maps
offered online by google, for exemple, but I dont like the ideia of
using the cache of google earth since all my work is done with QGIS
and Geoserver.
I know of some programs that are trial based that can do this but the
images dont have any type of projection information with them.
I end up with a bunch of images that cant be layed out on my current
projection system.
Is there a way of doing some kind of work with qgis in order to get
this done correctly?

Thanks for any kind of help.

Carlos Sousa
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RE: [OSGeo-Discuss] Usage of 'FOSS4G' in webpages?

[Andy Turner]

There is use of a the term Geospatial Free and Open Source Software (GFOSS):
http://www.osgeo.org/node/778

Andy
http://www.geog.leeds.ac.uk/people/a.turner/
 

-Original Message-
From: discuss-boun...@lists.osgeo.org [mailto:discuss-boun...@lists.osgeo.org] 
On Behalf Of Cameron Shorter
Sent: 15 October 2010 11:10
Cc: OSGeo Discussions
Subject: Re: [OSGeo-Discuss] Usage of 'FOSS4G' in webpages?

  Yes, I agree with Chris.
And OSGeo Software is also a loaded, but ambiguous term - probably 
meaning Software which has been incubated in OSGeo, but sometimes also 
meaning any Open Source GeoSpatial Software.

I'm afraid the best term I've been able to use is GeoSpatial Open 
Source Software or GeoSpatial Open Source Applications. Pity it takes 
so many words to say it.

On 15/10/2010 10:24 AM, Christopher Schmidt wrote:
 On Fri, Oct 15, 2010 at 10:19:33AM +1100, Simon Cropper wrote:
 Hi,

 Can someone please explain if the FOSS4G acronym can be used to identify 
 'free
 and open source geographical information systems/tools used to view, edit,
 manipulate and map geospatial data' and whether I can use it to help
 define/name some educational material I am creating?

 Something along the line of 'FOSS4G Handbook' or 'FOSS4G Guide'; or is the
 FOSS4G acronym now to intrinsically linked to OSGeo?
 Socially speaking, I think that to anyone in the OSGeo community, it's
 not only linked to OSGeo, but actually to the conference itself;
 a FOSS4G Guide would be a conference guide to me, not a software
 guide.

 I don't have technical information on trademark, etc. but I think that
 it is really unlikely that using the term FOSS4G in the OSGeo space
 would have the effect you're hoping for.

 Regards,


-- 
Cameron Shorter
Geospatial Solutions Manager
Tel: +61 (0)2 8570 5050
Mob: +61 (0)419 142 254

Think Globally, Fix Locally
Geospatial Solutions enhanced with Open Standards and Open Source
http://www.lisasoft.com

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RE: [OSGeo-Discuss] Thoughts on how to use elevation in routing

[Andy Turner]

Hi OSGeo Discussions, (cc Steve, Justin),

In terms of the computing of viewsheds, both Steve Carver 
(http://www.geog.leeds.ac.uk/people/s.carver/) and Justin Washtell 
(http://www.comp.leeds.ac.uk/washtell/) have done some work on this, but I 
don't know the latest...

It can be useful to compute which bits of road can be seen from other bits of 
road and what impact roads have on the perception of wilderness from off the 
road. Same true with vehicles on roads although these are usually moving.

I think the viewshed work though is somewhat orthogonal to including elevation 
in routing application outwith surveillance and visual impact contexts.

One further thought: it is much nicer to have junctions (where traffic is to 
slow and potentially stop for ordered inetrsection) well laid out at the top of 
small hills. This is for network flow and general economy and safety reasons. 
So in the analysis of a route, some quantification of junction impact taking 
into account elevation might be good.

HTH

Andy
http://www.geog.leeds.ac.uk/people/a.turner/
 

-Original Message-
From: discuss-boun...@lists.osgeo.org [mailto:discuss-boun...@lists.osgeo.org] 
On Behalf Of Stephen Woodbridge
Sent: 14 September 2010 17:31
To: discuss@lists.osgeo.org
Subject: Re: [OSGeo-Discuss] Thoughts on how to use elevation in routing

On 9/14/2010 11:43 AM, Bill Thoen wrote:
   Steve,

 Adding viewsheds to the package would certainly up the computing costs;
 I was wondering if you had a limit to what sort of processing power
 you've got there. ;-)

It is not unlimited, so part of the problem that is interesting to me is 
how to find and compute economical way to do it.

 I also think what you're proposing might be interesting, but you have to
 be careful about what conclusions you can draw from it. At what point
 does the cost due to gradient variations become insignificant to the
 overall cost of a route for a particular type of vehicle? For a trucker
 on an interstate highway it doesn't signify because the statistical
 noise of factors such high speeds and short driving time balanced
 against the higher price of fuel, services and road freight taxes
 completely overwhelms the cost factor contributed by the change in
 gradients. So in those cases you'd be computing numbers but not saying
 anything.

Agreed, doing anything for the trucking industry that would be useful 
probably requires a lot more understanding of the industry and 
regulations required for that. Luckily it is not my main focus :)

 A different scenario, where gradient /is/ a significant factor, would be
 a three-day 100 mile bike ride event through the mountains (like the
 'Ride the Rockies' event they hold around here every year.) The power
 that bicyclists can produce is so low that speeds and endurance are
 strongly affected by grades. But a bicyclist doesn't typically operate
 on the scale of the nation so applying the calculations to the entire
 TIGER file is overkill. Also, the bicyclist operates on such a large
 scale that the source data you're using to calculate gradient (30m DEM)
 may be too coarse to be reliable on the bicyclist's scale.

Right, these points are all valid and have crossed my mind at one point 
or another. Applying this to the Tiger data set is not that big of a 
deal. I already have the Tiger data in XYZ so computing grades is not 
that difficult. Another reason for applying it to the whole data set is 
to build a web portal with US coverage. Granted any single route will 
not have continental scope, but individual routes might be anywhere on 
the continent.

 I'm not saying it isn't worth doing, I'm just saying you'll need to
 qualify the precision of your results before you can say much about
 applying this to any real-world problems.

I'll post a link back if I get anything working. Meanwhile, thanks for 
the ideas and thoughts.

-Steve

 - Bill Thoen


 On 9/13/2010 5:28 PM, Stephen Woodbridge wrote:
 Bill,

 Thanks for the ideas. I might try to do something with the viewshed
 idea in the future. It would need a LOT of computing to process all
 the road segments in a National dataset like Tiger.

 But for now I would like to figure out the routing costs.

 One idea I had was to compute the grade for a segment and then compute
 cost as:

 cost = (time or distance) * scalefactor * max(abs(grade), 1.0)

 This would have the effect of causing segments with a lot of grade to
 have a higher cost of traversal.

 Or similarly, if you want to pick roads with a lot of elevation
 changes then use cost factor like:

 cost = (time or distance) * scalefactor /
 abs(sum_elevation_changes_over_the_segment)

 This would have the effect of decreasing the traversal cost for
 segments that have a lot of elevation changes.

 These are pretty crude estimates and probably would need some fine
 tuning to get reasonable results.

 Thanks,
 -Steve W

 On 9/13/2010 4:24 PM, Bill Thoen wrote:
 Stephen Woodbridge wrote:
 Hi all,

 (This is cross 

RE: [OSGeo-Discuss] Thoughts on how to use elevation in routing

[Andy Turner]

On reflection, viewshed analysis might be used for route choice if for example 
one might want the view of something on a route (this could be something 
relatively precisely located e.g. the tip of the Eiffel Tower, or something 
imprecisely located e.g. the sea). Elevation and landcover and details of 
season etc may well come into such a calculation...


From: discuss-boun...@lists.osgeo.org [discuss-boun...@lists.osgeo.org] On 
Behalf Of Andy Turner [a.g.d.tur...@leeds.ac.uk]
Sent: 14 September 2010 18:53
To: discuss@lists.osgeo.org
Cc: Stephen Carver; Justin Washtell
Subject: RE: [OSGeo-Discuss] Thoughts on how to use elevation in routing

Hi OSGeo Discussions, (cc Steve, Justin),

In terms of the computing of viewsheds, both Steve Carver 
(http://www.geog.leeds.ac.uk/people/s.carver/) and Justin Washtell 
(http://www.comp.leeds.ac.uk/washtell/) have done some work on this, but I 
don't know the latest...

It can be useful to compute which bits of road can be seen from other bits of 
road and what impact roads have on the perception of wilderness from off the 
road. Same true with vehicles on roads although these are usually moving.

I think the viewshed work though is somewhat orthogonal to including elevation 
in routing application outwith surveillance and visual impact contexts.

One further thought: it is much nicer to have junctions (where traffic is to 
slow and potentially stop for ordered inetrsection) well laid out at the top of 
small hills. This is for network flow and general economy and safety reasons. 
So in the analysis of a route, some quantification of junction impact taking 
into account elevation might be good.

HTH

Andy
http://www.geog.leeds.ac.uk/people/a.turner/


-Original Message-
From: discuss-boun...@lists.osgeo.org [mailto:discuss-boun...@lists.osgeo.org] 
On Behalf Of Stephen Woodbridge
Sent: 14 September 2010 17:31
To: discuss@lists.osgeo.org
Subject: Re: [OSGeo-Discuss] Thoughts on how to use elevation in routing

On 9/14/2010 11:43 AM, Bill Thoen wrote:
   Steve,

 Adding viewsheds to the package would certainly up the computing costs;
 I was wondering if you had a limit to what sort of processing power
 you've got there. ;-)

It is not unlimited, so part of the problem that is interesting to me is
how to find and compute economical way to do it.

 I also think what you're proposing might be interesting, but you have to
 be careful about what conclusions you can draw from it. At what point
 does the cost due to gradient variations become insignificant to the
 overall cost of a route for a particular type of vehicle? For a trucker
 on an interstate highway it doesn't signify because the statistical
 noise of factors such high speeds and short driving time balanced
 against the higher price of fuel, services and road freight taxes
 completely overwhelms the cost factor contributed by the change in
 gradients. So in those cases you'd be computing numbers but not saying
 anything.

Agreed, doing anything for the trucking industry that would be useful
probably requires a lot more understanding of the industry and
regulations required for that. Luckily it is not my main focus :)

 A different scenario, where gradient /is/ a significant factor, would be
 a three-day 100 mile bike ride event through the mountains (like the
 'Ride the Rockies' event they hold around here every year.) The power
 that bicyclists can produce is so low that speeds and endurance are
 strongly affected by grades. But a bicyclist doesn't typically operate
 on the scale of the nation so applying the calculations to the entire
 TIGER file is overkill. Also, the bicyclist operates on such a large
 scale that the source data you're using to calculate gradient (30m DEM)
 may be too coarse to be reliable on the bicyclist's scale.

Right, these points are all valid and have crossed my mind at one point
or another. Applying this to the Tiger data set is not that big of a
deal. I already have the Tiger data in XYZ so computing grades is not
that difficult. Another reason for applying it to the whole data set is
to build a web portal with US coverage. Granted any single route will
not have continental scope, but individual routes might be anywhere on
the continent.

 I'm not saying it isn't worth doing, I'm just saying you'll need to
 qualify the precision of your results before you can say much about
 applying this to any real-world problems.

I'll post a link back if I get anything working. Meanwhile, thanks for
the ideas and thoughts.

-Steve

 - Bill Thoen


 On 9/13/2010 5:28 PM, Stephen Woodbridge wrote:
 Bill,

 Thanks for the ideas. I might try to do something with the viewshed
 idea in the future. It would need a LOT of computing to process all
 the road segments in a National dataset like Tiger.

 But for now I would like to figure out the routing costs.

 One idea I had was to compute the grade for a segment and then compute
 cost as:

 cost = (time

RE: [OSGeo-Discuss] Any thoughts on the potential for using Seadragon as a map browsing interface?

[Andy Turner]

Hi,

Seadragon reminds me of Virtual Vellum 
(http://www.sheffield.ac.uk/hri/projects/projectpages/virtualvellum.html), but 
I don't know the current status of that. (Peter, Mike?)

Best wishes,

Andy
http://www.geog.leeds.ac.uk/people/a.turner/

-Original Message-
From: discuss-boun...@lists.osgeo.org [mailto:discuss-boun...@lists.osgeo.org] 
On Behalf Of Dave Patton
Sent: 28 April 2010 05:01
To: OSGeo Discussions
Subject: Re: [OSGeo-Discuss] Any thoughts on the potential for using Seadragon 
as a map browsing interface?

On 2010/04/27 8:46 PM, Landon Blake wrote:
 I'm not a web developer, but it seemed like the tech could be used
 for browsing high-resolution map images.
 
 http://www.seadragon.com/

http://www.youtube.com/watch?v=0ra5tp7K--I

-- 
Dave Patton
CIS Canadian Information Systems
Victoria, B.C.

Degree Confluence Project:
Canadian Coordinator
Technical Coordinator
http://www.confluence.org/

Personal website:
Maps, GPS, etc.
http://members.shaw.ca/davepatton/
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RE: [OSGeo-Discuss] Spatial Clustering/Data Mining

[Andy Turner]

Hi Kumaran, OSGeo,

As part of the SPIN!-project funded by the European Commission I was involved 
in developing a cluster component to a suite of spatial data mining tools. It 
is a standalone java implementation of numerous spatial clustering routines 
including GAM/K. Ian Turton, now at Penn State may have developed this further 
or taken parts to integrate with GeoVISTA Studio. I think Ian checks this list 
and hopefully he can point you to something more up to date.

Anyway, the source code is available via the following URL:
http://www.geog.leeds.ac.uk/people/a.turner/src/andyt/java/projects/Spin/spin-cluster/cluster.zip

At the web page at the following URL you can find a tutorial and some 
supporting documentation:
http://www.ccg.leeds.ac.uk/software/gam/

Best wishes,

Andy
http://www.geog.leeds.ac.uk/people/a.turner/
 

-Original Message-
From: discuss-boun...@lists.osgeo.org [mailto:discuss-boun...@lists.osgeo.org] 
On Behalf Of Kumaran Narayanaswamy
Sent: 30 March 2010 12:55
To: 'OSGeo Discussions'
Subject: [OSGeo-Discuss] Spatial Clustering/Data Mining

Hello,

Do we have any Open Source tool which can do Spatial Clustering/Data Mining?

Regards
Kumaran

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RE: [OSGeo-Discuss] Looking for information about Open Data practices and how it help to foster collaboration.

[Andy Turner]

Hi,

In the UK, you can see this happening from:
http://blogs.cabinetoffice.gov.uk/digitalengagement/

Best wishes,

Andy

From: discuss-boun...@lists.osgeo.org [discuss-boun...@lists.osgeo.org] On 
Behalf Of Haris Kurtagic [ha...@sl-king.com]
Sent: 16 January 2010 09:23
To: OSGeo Discussions
Subject: Re: [OSGeo-Discuss] Looking for information about Open Data practices 
and how it help to foster collaboration.

I really like presentation from Jason Birch from City of Nanaimo about reasons 
to open data and how to do it. 
http://www.slideshare.net/JasonBirch/moving-beyond-the-desk
http://www.slideshare.net/JasonBirch/moving-beyond-the-deskDon't forget to 
look at notes too, I did forgot first time.

Haris

On Fri, Jan 15, 2010 at 10:11 PM, Bob Basques 
bob.basq...@ci.stpaul.mn.usmailto:bob.basq...@ci.stpaul.mn.us wrote:

All,


I'm putting together a proposal here at the City to open up more of our 
datasets to the public.  We currently have about 30 GIS data layers available 
to the public,UrlBlockedError.aspx with ~170 layers that are not public.  
While there are some layers that won't be made available for security or 
licensing issues, there are many that the owners of simply don't want to make 
available.


I'm looking for information to include in a short proposal that might sway some 
of the folks sitting on datasets internally to get them to publish the data to 
the masses and need points of reasoning to point them at.


I already have some info related to general practices moving towards this type 
of data availability, and some of the recent threads on the OSGEO lists about 
data licensing would likely come into play as well.


Thanks for any pointers on this.


bobb




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RE: [OSGeo-Discuss] density maps

[Andy Turner]

Hi,

I developed some code that would do this. I called it Geographically Weighted 
Statistics and it relies on another library I developed called Grids. You can 
find these via the following URLs:
http://www.geog.leeds.ac.uk/people/a.turner/src/andyt/java/gws/
http://www.geog.leeds.ac.uk/people/a.turner/src/andyt/java/grids/

Best wishes,

Andy
http://www.geog.leeds.ac.uk/people/a.turner/
 

-Original Message-
From: discuss-boun...@lists.osgeo.org [mailto:discuss-boun...@lists.osgeo.org] 
On Behalf Of Alex Mandel
Sent: 07 January 2010 10:46
To: OSGeo Discussions
Subject: Re: [OSGeo-Discuss] density maps

miblon wrote:
 Hi there folks,
 
 I am currently investigating the open source options for generating
 density maps. I currently have some php code that could form the bases
 to do this, but I would prefer to use more general available api's such
 as geotools if that would be possible.
 
 From a j2ee developers point of view; I am looking for functionality
 that I can feed with a dataset of irregular point(jts) geometry and that
 will generate a layer like the one shown here:
 
 http://2.bp.blogspot.com/_ZSuJiQ9ztA8/SmIM9yD-tYI/BlM/FOyoqcie7Cc/s1600-h/Shootings+heat+map+Baltimore+July+2009.jpg
 
 
 or
 
 http://rbnhw.com/media/epp-ShakeProbability.jpg
 
 preferably, the image should be georeferenced so it can be handled as
 wms, but the latter I can fix.
 
 Any ideas or references on where to look would be great!
 
 kind regards,
 
 Milo van der Linden

I believe this implementation is done with Postgis  not sure what else
http://www.walkscore.com/rankings/San_Francisco

The creator of that site lurks here too, and I can put you in contact
for the specifics.

Alex
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RE: [OSGeo-Discuss] scale of FOSS projects

[Andy Turner]

 At the moment, I can't think of any really successful open source
projects that didn't have their origins with a network of
partly-funded enthusiast contributors where the originator didn't have
some form of organizational home and/or a funding stream for the first
few releases of the software.

 Now, if anybody has a good example of a more grass roots project that
has survived - please, some examples would be a great contribution to
this discussion.

It has gone through some major changes, but GeoTools might fit into the
surviver without initial funding class of OSS and it's FOSS4G too :-)

Best wishes,

Andy
http://www.geog.leeds.ac.uk/people/a.turner/
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[OSGeo-Discuss] FW: GIS for JMT

[Andy Turner]

Sorry, this was a bit big and awaited email list moderator approval. I
cancelled and put the GIS Specification document at the following URL:
http://www.geog.leeds.ac.uk/people/a.turner/personal/blog/archive/2008/0
3/03/GIS Specification.doc
http://www.geog.leeds.ac.uk/people/a.turner/personal/blog/archive/2008/
03/03/GIS Specification.doc 
 
 


From: Andy Turner 
Sent: 03 March 2008 14:14
To: 'OSGeo Discussions'
Cc: Stephen Carver; '[EMAIL PROTECTED]'
Subject: FW: GIS for JMT


Hi OSGeo Community (cc Steve, Mike),
 
Sorry if I should have posted this elsewhere.
 
My colleague Steve Carver has been approached by Mike Daniels from a
charitable organisation (John Muir Trust) for a GIS solution to managing
its data and collaborative working. I am sure that an OSGeo software
stack with some consultancy and training is the best option. I asked to
forward the invite to tender to this list. Is anyone interested? If so,
you can contact Mike Daniels direct. There may also be some
collaborators with links to the University of Leeds that might be
interested in working up a proposal.
 
Is there documentation for a similar OSGeo Use Case? Is there
documentation on similar invites to tender and offered solutions?
 
I've sent this on without finding a service registry with lists of
consulting companies. I think such a thing exists, but I didn't find it
with a quick search...
 
I am interested to know what solution is put in place, but personally
don't have time to contribute to such an effort right now.
 
Best wishes,

Andy
http://www.geog.leeds.ac.uk/people/a.turner/




From: Stephen Carver 
Sent: 03 March 2008 12:20
To: Andrew Evans; Andy Turner; [EMAIL PROTECTED]; 'Justin
Washtell'; '[EMAIL PROTECTED]'; '[EMAIL PROTECTED]'
Subject: FW: GIS for JMT



Hi folks,

 

Is anyone interested in the attached? Basically, providing a
cheap-and-cheerful and/or off-the-peg means of John Muir Trust sharing
GIS data among a small number of users at different sites (Internet
linked) with minimum functionality (upload data, swithc on/off layers,
zoom in/out, pan, print as JPEG/PDF). I've no idea as to what monies
they have in mind but they're a charity so it won't be mega bucks.

 

If you're interested can you contact Mike direct or pass on to those who
you think might be. I'll probably going to the workshop that Mike
mentions as I should (hopefully) be doing some more analytical work for
them in due course on wildness mapping.

 

Ta!

Steve

 

From: Mike Daniels [mailto:[EMAIL PROTECTED] 
Sent: 03 March 2008 11:31
To: Stephen Carver
Subject: GIS for JMT

 

Dear Steve

 

I contacted you recently in connection with exploring GIS options for
JMT. I am now keen to progress this towards the stage of having
costings, timetable etc. drawn up so that I can take proposals to senior
management and explore funding options (no promises given!). 

 

I therefore attach an outline of where our thinking has got to on what
we require. I would appreciate your quick thoughts on:

 

a) your interest in this work

b)an outline of approximate costings and timetable

c) your willingness to attend a GIS workshop hosted by us alongside
rival contractors to help us finalise our decision

 

I would very much appreciate your thoughts by the end of this week, if
at all possible.

 

Please do not hesitate to contact me to discuss further, more info.

 

Many thanks

 

Mike Daniels

 

 

 

 

 

Chief Scientific Officer

John Muir Trust

Tower House

Station Road

Pitlochry PH16 5AN

 

Tel: 01796 484937 (direct no)

Tel: 01796 470080 (switchboard)

 

[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] 

 

Become a guardian of wild places.   Join the John Muir Trust today. 

Join online or arrange a Gift Membership -
www.jmt.org/become-a-member.asp http://www.jmt.org/become-a-member.asp


--

The John Muir Trust is the UK's leading wild land conservation
organisation.

John Muir Trust: Scottish Charitable Company limited by Guarantee 

Registered Office: Tower House, Station Road, Pitlochry, PH16 5AN 

Charity No. SC002061 Company No. SC081620

 

 

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RE: [OSGeo-Discuss] Image Management in an RDBMS...(was OS Spatialenvironment 'sizing')

[Andy Turner]

Hi,
 
I'm processing a dataset for the Cairngorms National Park in the UK.
This source is NextMap data at a 5 metre square gridded raster. It has
3 columns and 24000 rows. Amongst other things I calculate roughness
for kernels taking in all values within 64 celldistances. The roughness
output is calculated at the same resolution as the input (along with
around 60 other metrics).
 
This is a small dataset in comparison with some data for Mars that I am
processing in a similar way. I am also grappling with the SRTM90 data
from 60South to 60North this has several hundred thousands of rows and
columns. On the hardware side, I need terrabytes of disc space, but only
one or so gigabytes of faster access memory to do this work. Point is as
many of you know, there are big raster datasets out there and now is as
good a time as any to process them.
 
I split the data into chunks and store them as files on disc. I have
problems when the number of files gets too large and when the size of
each chunk gets too large. I compromise and at the moment and tend to
use chunks with about 500 row and 500 columns (I could use any with my
program so long as all chunks have the same dimensions). The problem of
too many files I think is an operating system problem. The problem of
too large chunks is more down to the implementation of raster processing
and it's memory handling. I try to hold enough data in memory in my
program so that I get answers in a reasonable time frame. (BTW, my
programs are FOSS and I'll release a new version of Grids soon which you
can pick up via http://www.geog.leeds.ac.uk/people/a.turner/src/).
 
I do the Geomorphometrics processing both on my PC and on some High End
Computers. On HECs I am considering using a federated datastore like SRB
and parallelising as the task is embarasingly parallel so it is
reasonably easy to do (please excuse my spelling). I am also looking
into more Grid/Web Services SOA ways of doing this.
 
In the past I have used the blobs database approach. I don't know which
is best, but I'm working with files again now. In the past I have found
that for some things RandomAccessFiles are best and directly
manipulating information on disc rather than say using a swap appraoch.
I think what is best all depends on what you are doing, how many raster
datasets you simultaneously use in the processing. Nearly all of my
processing these days involves computing for kernels at the same
resolution of the inputs with (sometimes) multiple inputs (but usually
just one input) and multiple outputs (about 50 or so).
 
Best wishes,
 
Andy
http://www.geog.leeds.ac.uk/people/a.turner/
  
 



From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: 22 February 2008 04:53
To: OSGeo Discussions
Subject: Re: [OSGeo-Discuss] Image Management in an RDBMS...(was OS
Spatialenvironment 'sizing')



IMO 

 
 12 million records is teensy. Stuff it into PostGIS. It's the billion-

 point LIDAR sets that leave me queasy, but I can't begin to think of a

 reasonable architecture for that without learning more about how the  
 points are actually USED, which I really am not clear on at the
moment.
 

Paul, 

Agreed. 

Generation of TINs or surfaces of roughness over that number of points
will challenge any data management solution. 

However, the time is coming / has come when people will want to do it. 

It is perhaps a good candidate for Grid architectures and high
performance computing. 

Bruce 

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[OSGeo-Discuss] FOSS software for GML to Raster conversion using streams (for OGSA-DAI)

[Andy Turner]

Hi List,

I am looking for some advice on the existence, availability and
appropriateness.

Am I asking in the right place? Can anyone help?

OGSA-DAI (http://www.ogsadai.org.uk/) has pipeline architecture. It is
designed like that to work fast in a multi-threaded way with streams of
data.

Many thanks and best wishes,

Andy
http://www.geog.leeds.ac.uk/people/a.turner/
 
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