Hi guys,
Jim, thank you for your response and your wish!
OK, here are more questions:
So there not exists a complete feature list?
My last question more aim at „Could I use OGC Style Layer Descriptor, OGC General Feature Model and
ISO 19107 Geometry within GeoMesa? Since GeoMesa comes with GeoTools.“.
Next, with Spark I can use CQL. What else could I use in Spark for spatial computation? JTS?
Again GeoTools. It has a built in JDBC for PostgreSQL. I really want to use it. Is that possible?
Please excuse me if some questions are not well considered. But at the moment I am overwhelmed by all the amazing stuff out there.
For example I don’t know if datatypes from GeoTools and JTS are interchangeable.
Yours sincerely,
Kurt Junghanns
Agricon GmbH
Von: geomesa-users-bounces@xxxxxxxxxxxxxxxx
[mailto:geomesa-users-bounces@xxxxxxxxxxxxxxxx] Im Auftrag von Jim Hughes
Gesendet: Mittwoch, 21. Januar 2015 20:05
An: geomesa-users@xxxxxxxxxxxxxxxx
Betreff: Re: [geomesa-users] Overview of technical features needed
Hi Kurt,
I'll respond briefly; please feel free to ask more questions.
GeoMesa uses Accumulo (https://accumulo.apache.org/) as the underlying database layer. By rough analogy, GeoMesa is to Accumulo as PostGIS is to PostgreSQL.
GeoMesa does not currently support MapServer. Rather, there is support for GeoServer (http://geoserver.org/).
In terms of features, I don't have a short, concise list handy. In terms of a typical geo-spatial, temporal database, GeoMesa supports the OGC Common Query Language by working GeoServer's ECQL. In more traditional senses, (E)CQL is roughly equivalent to the
'Where' clause from a SQL query. For example, we may want to search for the data where a geometry is in a bounding box and the time is within a given range.
Additionally, GeoMesa supports finding the 'k' nearest neighbors via a WPS process. There are a number of other processes which can help aggregate data from across the tablet servers. Lastly, GeoMesa has some support for Map/Reduce and Spark computation.
Thanks, and good luck with your thesis!
Jim
On 01/21/2015 04:45 AM, Kurt Junghanns wrote:
Dear GeoMesa team,
Currently I write my master thesis in informatik. The title is „Untersuchung und Optimierung verteilter Geografischer Informationssysteme zur Verarbeitung
Agrartechnischer Kennzahlen“.
There I make a comparison of frameworks for spatial data processing. For that I am interested in an overview of the technical features which GeoMesa provides.
I am particularly intersted in:
·
Interfaces to common databases like PostgreSQL
·
Existing or possible interface for UMN MapServer
·
Amount of useable features of GeoTools in GeoMesa
Some information could be found on the official websites, but I am searching for a reliable source for my thesis.
Yours sincerely,
Kurt Junghanns
Agricon GmbH
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