Geoscience Reference
In-Depth Information
•
OSSIM is used to process satellite imagery, terrain and vector data.
•
FDO Data Access Technology is an application programming interface that can
be used to analyze and manipulate geospatial data that is either stored locally,
remotely or within a distributed environment.
•
GEOS is a C++ library that is based on the Java Topology Suite that provides
spatial operators, topology functions and OpenGIS Simple Features for SQL.
•
GeoTools is a JAVA library that is used for the manipulation of spatial data.
•
PostGIS provides spatial support to the PostgreSQL database that allows for spatial
objects to be stored, queried and analyzed within it.
Other open source geospatial toolkits that are dependent on the command line
include: the Remote Sensing and GIS Library (RSGISLIB)
1
developed by Pete
Bunting, Open Foris developed by the FAO
2
as well as BEAM and PolSARPro that
are software packages developed by the European Space Agency (ESA) primarily
for processing their optical and radar data respectively.
We anticipate that our topic will appeal to a wide audience that are working with
geospatial data or are keen to start to do so. As the title suggests, the topic is focused
on geospatial command line utilities in lieu of the more widely used graphical user
interface (GUI), which have a larger user community and are also well documented.
It is important to remember that although command line interface (CLI) and GUI
based programs are quite different in terms of usage, they are
not
mutually exclusive
and can happily co-exist within the users working environment and in some cases,
such as GRASS GIS, both are available. However, we expect that everyday users
of the GUI are perhaps less aware of the power of command line tools, particularly
when large, repetitive data processing is required. It is here that we feel that our topic
will be of interest. Our assumption is that if you are reading this topic you:
•
Areworking in the field of geospatial science (GIS analysis, geo-web development,
remote sensing etc.);
•
Are aware of command line utilities and want to learn more about them within
your discipline or need a reference to the commonly used packages;
•
Want to extend your knowledge of a rapidly emerging element of geospatial sci-
ence, particularly with open source technologies to develop your own customized
tools.
In short, we consider that you are interested and willing to learn more about
the command line utilities and scripting to facilitate your geospatial analysis and
processing as means of becoming more efficient in your day to day work; whilst also
giving you a handle on developing your own tools using both scripting languages
and APIs.
The objectives of the topic are to:
1. Present a comprehensive reference and treatment of GDAL and related open
source geospatial packages.
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