[gvsig-campus] Re: gvSIG Mini surveying wish list (was Re: Re: GSoC reminder)
- From: r bg <rbroseta@xxxxxxxxxxx>
- To: <gvsig-campus@xxxxxxxxxxxxx>
- Date: Tue, 20 Mar 2012 11:22:55 +0000
Hola Alberto,
Si no te importa escribiré en castellano jeje. De todos modos si crees que la
comunicación en el mailing debe de ser en inglés, dímelo y lo traduzco.
He hechado un vistazo a todo lo que comentas y me parece muy interesante.
libLocation hace muy buena pinta y creo que podría utilizarse sin mucho
problema. En mi opinión es necesario tener un control de la calidad de las
mediciones realizadas con el GPS, ya que el desarrollo que se porpone sería
utilizado en su mayoría por profesionales a los que les interesa tener una
aproximación de la precisión de los datos obtenidos para adecuar su futuro uso.
Por desgracia parece imposible trabajar con ficheros RINEX desde el GPS de un
smartphone Android [1]. Sin embargo, se pueden tratar diveros datos obtenidos
por el GPS a través de la información obtenida por el protocolo NMEA 0183 [2].
libLocation creo que da soporte a NMEA y la API de Android creo que permite
extraer su información [3]. Insisto en tener "controlada" la precisión porque
si miras el video de demostración de open-gpstracker verás que los puntos
adquiridos van haciendo zig-zag posiblemente por ser los "datos crudos"
obtenidos por el GPS. De todas formas creo que existen dos tipos de mediciones
a abordar: las que estén basadas en levantamientos a través de puntos
significativos (donde la precisión de los puntos medidos es importante), y las
que sean de tipo ruta (que con el suavizado de libLocation no haría falta tener
tan controlada la precisión).
Respecto de exportar a diferentes formatos, sería excelente, cuando tenga
tiempo miraré cosillas. Y sobre consultar a los usuarios de la lista de gvSIG
sobre que ven más prioritario, creo que es muy buena idea, cuanto más feedback
mejor.
Bueno, seguiré informandome y dando mi opinión sobre el asunto, que espero
sirva de algo. A ver si más gente se anima a hacer su aportación a este hilo.
Saludos!
[1] http://ls.unavco.org/pipermail/teqc/2010/001067.html
[2] http://en.wikipedia.org/wiki/NMEA_0183
[3] http://developer.android.com/reference/android/location/LocationManager.html
Date: Mon, 19 Mar 2012 19:33:06 +0100
From: aromeu@xxxxxxxxxxxxx
To: gvsig-campus@xxxxxxxxxxxxx
Subject: [gvsig-campus] gvSIG Mini surveying wish list (was Re: Re: GSoC
reminder)
Hi,
in my opinion there are two different parts on this project.
In one hand the "GPS tracking stuff". The desirable features can be
as you mention, tracking and logging locations, allow points, lines
or polygons, attach custom forms, etc. Maybe we can take a look to
libLocation [1] and test if it can be used on Android as it provides
a well known API and several interesting implementations of
strategies to filter and smooth the track. There are also some other
libs to track GPS locations [2] that could be used by gvSIG Mini (I
don't know, I'm just giving ideas).
On the other hand, the output format. Having support for shapes
would be very interesting and it could be taken as a priority. I
don't know how hard this part is, we should have some support from
gvSIG developers (maybe a co-mentor). Anyway having an API to allow
several output formats a part from SHP, such as GML, KML, GPX,
SpatialLite, etc. would be nice, not coding the writers but the API.
This is some kind of a "wish list", although I'm just a developer,
maybe we can poll the gvSIG users list, to see which features they
consider most important, not to code all of them but to focus in
having something really useful. This is a good moment to gather
information, test libraries, feature requests to start planning your
summer.
[1]
http://downloads.gvsig.org/download/events/gvSIG-Conference/5th-gvSIG-Conference/Reports/Nuevas_funcionalid_localizacion_gvSIG_Mobile_basadas_LibLocation.pdf
[2] http://code.google.com/p/open-gpstracker
Good luck,
Alberto.
El 14/03/12 14:37, r bg escribió:
Hi Alberto,
Thanks for the welcome. Well, in a first moment I can think of
several suggestion improvements
for "gvSIG Mini surveying" feature. For
example:
- user can choose POINT, LINE, POLYGON as the geometry type
- user can create a related .dbf whith the information
of the object
attributes
- user can define a simple form to populate the .dbf when
element is measured (whith a personal ListView)
- user can choose a level of accuracy (depending
of future use) of the gps collected data
(it requires a statistical strategy)
-
user can define a "exact" points of the several existing
networks for the later adjustment
- user can adjust the data before exporting file
- we can explore the possibility to use a VRS strategy
- etc.
This is a brainstorming, but everything said should be quietly
studied. In the other hand, if I have an idea
I propose in this mailing list.
Best regards
Date: Wed, 14 Mar 2012 12:42:10 +0100
From: aromeu@xxxxxxxxxxxxx
To: gvsig-campus@xxxxxxxxxxxxx
Subject: [gvsig-campus] Re: GSoC reminder
Hi Raúl,
as you probably know the program is currently in the
"organization applications" stage [1], although it's a good
moment to introduce you and start discussing possible ideas,
so welcome :).
The "gvSIG Mini surveying" feature is a very demanded one
among professionals that want to use gvSIG Mini, but feel free
to think and propose your own ideas or improve the one
proposed.
Best regards.
[1] http://www.google-melange.com/gsoc/events/google/gsoc2012
--
Alberto Romeu
---
Prodevelop SL, Valencia (España)
Tlf.: 96.351.06.12 -- Fax: 96.351.09.68
http://www.prodevelop.es
---
El 14/03/12 12:22, r bg escribió:
Hi,
My name is Raúl and I'm student from Polytechnic University of
Valencia (UPV). I'm
really interested to collaborate with the GSoC 2012.
Actually I'm interested with the proposal made in wiki
about gvSIG Mini ("Adding GPS Survey capabilities to gvSIG
Mini") . I think that is an excellent idea.
I graduated in Technical Engineer in Topography and also I
graduated in Master about Software Engineering and
Information Systems. Currently I'm doing a Specialist
University Title about Mobile and Ubiquitous Computing.
Also I have done an Android course in UPV that took 200
hours.
We're in contact.
Best regards
email: rbroseta@xxxxxxxxxxx
/ raul.broseta@xxxxxxxxx
twitter: @rbroseta
> Date: Tue, 13 Mar 2012 19:05:37 +0100
> From: jsanz@xxxxxxxxx
> To: gvsig-campus@xxxxxxxxxxxxx;
gvsig-desktop-tsc-pub@xxxxxxxxxxxxxxxxxxx;
gvsig-desktop-devel@xxxxxxxxxxxxxxxxxxx
> Subject: [gvsig-campus] GSoC reminder
>
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Hi all
>
> This is a reminder for possible mentors that the
period to accept
> student applications is coming and so far we have
just a couple of
> ideas posted on the OSGeo wiki[1].
>
> If you are/know any student willing to participate
on a summer
> scholarship developing cool stuff on gvSIG products
please answer this
> mail and check the list so maybe you can apply to
the GSoC program.
>
> Best regards
>
> [1] http://wiki.osgeo.org/wiki/GvSIG_GSoC_2012_Ideas
>
> - --
> Jorge Gaspar Sanz Salinas
> gvSIG Team at Prodevelop
> Technical Collaborations Manager
> http://www.gvsig.org
> http://www.gvsig.com
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