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Barry Rowlingson's "Arlat" on FOSS4G 2007

14 messages · Hisaji ONO, Virgilio Gomez-Rubio, colin +6 more

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Hello.

 Last week, I participated in FOSS4G
2007(http://www.foss4g2007.org) held in Victoria, British
Columbia, Canada.

 In this conference's program ,  Barry Rowlingson
presented "Delivering Tropical Medicine Solutions with
Integrated Open Source GIS and Statistics." 
 This presentation was about integrated system called
"Arlat" using Quantum GIS for desktop mapping and R for
the statistics engine connected by
Python(http://www.foss4g2007.org/presentations/view.php?abstract_id=135).
 
 Unfortunately, I participated in another presentation and
missed this one.

 I've developed SDAM(Spatial Data Analysis Machine) using
R, R(D)COM and GeoTools. So I've been very interested in
"Arlat."


 Does anyone has more information about this "Arlat."



Regards.
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Dear Hisaji,

I found this technical report which may be of your interest:

http://www.bepress.com/cgi/viewcontent.cgi?article=1103&context=jhubiostat

It describes the methodological methods and the implementation. There
are some screen shots as well.

Is anyone else doing similar stuff? I mean, developing a GIS for Spatial
Epidemiology. I am very interested in the subject and I would like to
know what is going on out there.

Hisaji, could you send more information about your SDAM?

Best,

Virgilio
On Mon, 2007-10-01 at 19:28 +0900, Hisaji ONO wrote:
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Hi all, I'm also very interested in GIS for spatial epidemiology.  I
attended Dr Rowlingson's talk and was really impressed with the use of
QGIS as a client for developing add-ons in addition to its integration
with R! 

I too am interested in any additional info and examples on this topic...

Regards,

Colin
On Mon, 2007-01-10 at 12:32 +0100, Virgilio Gomez-Rubio wrote:
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Any way of getting the pdf of the talk? I'm interested
both on the epidemiology application and on
the R-QGis integration.

Agus

colin escribi?:

  
    
#
Any way of getting the pdf of the talk? I'm interested
both on the epidemiology application and on
the R-QGis integration.

Agus

colin escribi?:

  
    
#
I'll try and sort this out once I get back from my travels in a week or 
so!

Barry
10 days later
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Agustin Lobo wrote:
I've just uploaded my slides, although I'm not sure how much sense 
they make without my witty narrative that goes along with it :) Did 
anyone record my talk for posterity?

  Link here:

http://www.foss4g2007.org/presentations/view.php?abstract_id=135

Barry
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Barry,

Thanks for the slides and congratulations for the hard work. My question
nos is whether Arlat (and any other source code) available on-line.

Best,

Virgilio
On Fri, 2007-10-12 at 12:45 +0100, Barry Rowlingson wrote:
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I'm sorry I missed this talk Barry, but the slides were a pleasure to go 
through!

What was the argument not to go with OpenEV with communication through 
Rserve?

Thanks,
--
Edzer
Barry Rowlingson wrote:
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Virgilio Gomez-Rubio wrote:
The source code of the R-package for Arlat is here:

http://www.maths.lancs.ac.uk/Software/Arlat/

  BUT! There's very minimal documentation or examples. You may have 
trouble making it work, or even working out which functions to call. One 
day I'll write the documentation...

Barry
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Edzer J. Pebesma wrote:
Efficiency: Rserve has to convert the data to the Rserve wire 
protocol, send it down the loopback network and unconvert it at the 
other end, whereas Rpy does conversion in memory when needed and there's 
no transport.

  Simplicity: Using Rserve means making sure the separate Rserve process 
fires up when you need it, whereas Rpy just loads up libR.so  (or .dll) 
and works like that.

  User-friendliness: OpenEV is not the most standard-looking GIS program 
on the planet - it was never really designed to be a general purpose 
vector and raster GIS anyway, which is what Qgis does well.

That's probably enough reasons!

Barry
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On Friday 12 October 2007, Barry Rowlingson wrote:
Excellent presentation, on an excellent use of FOSS GIS+R !!

Cheers,

Dylan
3 days later
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Dear List,

I am using the filled.contour function with the argument plot.axis = 
{map('worldHires',add=T)} to add the world map to my plot.

filled.contour(x,y,z,plot.axes = {map('worldHires',add=T,fill=T)})

The problem is that the longitudes of my matrix go from 0 (at Greenwich) 
to 360 which seem not to be the same for the map function (whose 
longitudes go from -180 to 180). Hence only one part of the map appears 
on the plot (South Africa and Australia). Do you know a way to get the 
whole map on the plot?

Cheers,

Anne




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On Tue, 16 Oct 2007, Anne GOARANT wrote:

            
Two possibilities: forego higher resolution and use "world2" in maps, or 
manipulate x in the filled.contours() call, something like (untried):

xx <- ifelse(x <= 180, x, -(360 - x))

which ought to work even if your x range extends below 0.

Roger