Hi Miguel, Noli!
Miguel, thanks for your hint, I just skimmed your class diagram, looks
quite promising.
since my stuff is yet experimental, gvSig seems worth a look for
sharing components.
- Do you have a public SVN repo for getting the source?
- Does gvsig support selecting and identifying features and querying
data such as attributes, area, ....?
more questions will follow ;)
Thanks in advance
Philipp
Am 21.04.2010 um 12:00 schrieb Miguel Montesinos:
Hi Phillip and Noli,
We have developed the application Phillip points out. It doen't
support
those features so far, but if you like to use it as a base, we are
ready
to collaborate in order to support the creation of geometries (point,
polyline, polygon) from the GPS (or hand-based), or some other vector
capabilitites.
I've recently acquired my third Android phone, and I'm sure that
Android
projection is going to be really impressive (it's right now, as a
matter
of fact).
It will be great to extend the community of users and developers of
this
application.
Regards,
Miguel Montesinos
-----Mensaje original-----
De: qgis-user-boun...@lists.osgeo.org
[mailto:qgis-user-boun...@lists.osgeo.org]
En nombre de Noli Sicad
Enviado el: martes, 20 de abril de 2010 23:33
Para: Philipp Auersperg-Castell
CC: qgis-user
Asunto: Re: [Qgis-user] Mobile GIS
Hi Phillip,
Thanks for sharing your project and ideas.
Have you tried this app.
https://confluence.prodevelop.es/display/GVMN/Home
Probably you can borrow some of their codes to incorporate to what
you
have started. It is GPL project as as well. I think there is no edit
function in the map viewer.
Regards,
Noli
On 4/21/10, Philipp Auersperg-Castell <p...@bluedynamics.com> wrote:
IT depends what you need from the mobile GIS application,I am
currently poking around with android, Qgis and MapServer for
forrestry
mapping.
I used Qgis to develop a forest map for my forest enterprise, with
PostGis as backend.
Recently Ive bought my first Android smartphone with GPS integrated
and in consequence there came up the wish to display my forest map
in
GoogleMaps (with the satellite image as background) and the ability
to
mark points or areas by GPS and upload them into the GIS.
So I typed 'gis' and 'map' and similar terms into Android Market
(=AppStore in the Android world) and found nothing useful except
apps
for geocaching, hiking, mountainbiking and the like, but
nothing that would fit my needs.
As a consequence I started experimenting with the Android SDK and
found out that it is not too much work to use the MapView shipping
with the SDK to display stuff on top of the google satellite image.
With the help of JTS (a java library for geo stuff,
http://www.vividsolutions.com/jts/jtshome.htm)
it was less than 100 lines of code to display polygon layers as
overlay into the MapView. Most of the work was to get initially
familiar with Android SDK and its philosophy, and with its
integration
to eclipse it seems quite handy to me.
The next Problem is how to get my maps from Qgis/Postgis to my
phone,
there I decided for an online solution with MapServer as backend.
QGis
has MapServerExport as plugin, so its no big deal to export a QGIS
project to MapServer. Then I wrote an xmlrpc server (around 150
lines
of python code including coordinate transformation) which deploys
the
layer features in the WKT format, that I parse on my handheld with
the
help of JTS library and the module mentioned above displays it on my
MapView.
I also wrote some code to capture coordinates (points and areas)
with
GPS and are currently working on uploading them into the GIS server.
My software can even mark remote points using the handheld's camera
and the device's internal compass for the direction. I then just
have
to manually enter the distance read from a laser distance meter and
have my point location.
All that is by far not production ready but serves for me as a proof
of concept that I can display my map online from my server on my
android phone and be able to digitize features with GPS.
If anybody is working on such a beast please let me know if you are
interested in doing some work together....
regards
Philipp
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