|
| | 


THE HISTORY OF ILWIS
In late 1984, the ITC in the Netherlands was
awarded a grant from the Dutch Ministry of Foreign Affairs (DGIS), with which it
developed a Geographic Information System (GIS) which could be used as a
tool for land use planning and watershed management studies. With both raster
and vector capabilities; it was the first fully integrated raster and vector
GIS
/ remote sensing software programme in the world. Originally primarily used and tested within the
institution, by the end of 1988 the DOS version 1.0 of the Integrated Land and
Water Information GIS and remote sensing progamme, ILWIS was officially released. Two years later,
the integrated raster + vector GIS + remote sensing programme ILWIS
was made commercial with ITC establishing a worldwide distributors network.
ILWIS 2.0 for Windows was released at the end of 1996, and ILWIS 3.0 by mid
2001. On 1st January 2004, ILWIS 3.2 was released as a shareware (one month
trial offer).Since July 1st 2007, ILWIS has been distributed as an open source raster
+ vectos GIS / remote sensing
software under GPL license by 52 North
In the following table you can see the history of the
development of ILWIS.
It clearly shows that this Geographic Information System (GIS) has a
very long history of development and is no doubt the most versatile and flexible
open source vector + raster remote sensing / GIS programmes in the world.
| Version |
Release date |
Significant changes |
| Release |
Date |
Highlights |
| Subsidy |
1984 |
Subsidy and Initial development |
| ILWIS 0 |
1985 - 1988 |
Development and testing phase |
| ILWIS 1.0 |
1988 |
Official introduction of
raster + vector GIS / remote sensing programme ILWIS |
|
ILWIS 1.0 commercial |
1990 |
Worldwide commercialization of ILWIS |
| ILWIS 2.0 |
1996 |
Release 2.0 |
| ILWIS 3.0 |
June 2001 |
Release 3.0 |
| ILWIS 3.1 |
April 2002 |
Release 3.1
|
| Patch
3.11 |
September 2002 |
Direct import of Aster satellite images level 1a and 1b, including all
needed geometric and radiometric corrections. This functionality is
integrated in the Import Map Wizard.
|
|
Stereopair from DTM - Stereo pair from DTM operation creates a stereo
pair from a single raster map and a Digital Terrain Model (DTM). These
stereo pairs have the same usability as the Epipolar Stereo Pair.
|
| Patch
3.12a |
August 2003 |
ID Grid map - creates a polygon map given a coordinate system and an
attribute table. The polygon map consists of rectangular grid cells with
a unique ID and can be linked to a table with attribute data when sample
data is available.
|
|
Spherical Distance option was added to the operations Spatial
Correlation, Cross Variogram, Nearest Point, Moving Average, Moving
Surface, Kriging and CoKriging. This option calculates distances over
the sphere instead of in a plane.
|
|
Export to ArcPad .PRJ - ILWIS coordinate systems can be exported to an
ArcPad .prj file.
|
| ILWIS 3.2 |
January, 2004 |
ILWIS becomes a raster +
vector GIS / remote sensing shareware software and is offered for 100 Euro per license after
1 month
WICE launches http://www.ilwis.org
as a ILWIS-users website.
Spatial Multiple Criteria Evaluation (SMCE)
|
| Hydrologic Flow Operations |
| Find Datum Parameters Wizard |
| GARtrip import |
| Patch
3.21 |
August, 2004 |
Extensions in Spatial Multiple Criteria Evaluation - Slicing,
histograms, aggregated values, and an improvement in class map
standardization.
|
|
Improvement in calling external executable files - Support for
parameter passing, wait-till-finished option and error handling, and
inclusion in a script as part of a batch process.
|
|
Support for coordinates for images from the MeteoSat-8 satellite.
|
| ILWIS 3.3 |
September 2005 |
The SMCE application extended with overlay of reference maps,
combination of spatial and non-spatial MCE, and interactive function
graphs for standardization.
|
|
New applications for DEM hydro-processing implemented, like
topological optimization, drainage network extraction, catchment
extraction, horton statistics etc.
|
|
Georeferencing with additional supports up to 8 fiducial marks,
sub-pixel precision and 3D coordinate transformations using 7 or 10
datum parameters.
|
|
Import and export using the GDAL library.
|
|
Projections for geostationary satellites.
|
|
Calculation and statistical functions for map lists.
|
| Patch 3.31 |
June 2007
|
Improvements in the Hydrologic Flow Operations - Flow
Direction now includes parallel drainage correction over flat surface,
added a 'cut terrain' option to Fill sinks, and added operations 'Flow
Length to Outlet' and 'Flow Path Longitudinal Profile'.
|
|
The SMCE application was extended with options to
generate contour maps from suitability maps, and to directly view the
standardized version of any of the criteria.
|
|
Added Hungarian EOV projection and 1972 Datum, the
Mercator Scaled projection, the GRS 67 ellipsoid, and ellipsoidal cases
for the Goode, Mollweide and cylinder Sinusoidal projections.
|
Added a spectral angle classifier.
|
Exporting Shapefiles now also exports the coordinate
system to a .PRJ file.
|
| ILWIS
3.4 Open |
July 2007
|
ILWIS becomes
an open source raster + vector GIS / remote sensing software
GPL version from 52° N with proprietary components removed.
|
| ILWIS
3.5 Open
|
September 2008
|
Added an OGC compliant WMS client.
|
| Added a Surface Energy Balance System
(SEBS) application.
|
ILWIS
3.6 Open
|
April
2009
|
- Full integration of GDAL, a library that
offers access to many raster formats;
- ILWIS supports Postgres tables and Postgis point and segment maps through native access from a Postgis database. A first implementation has been made to access these sources of data. It will be further extended in the
future;
- Extension and improvements of the SEBS
functionality.
- User interface for Import has been improved to support a plug-in model for imports.
They now largely follow a plug-in model (some old ones excepted). New imports can be added without changing ILWIS.
- The plug-in model has been extended to cover plug-ins stored in zip files that need their own folder structure to organize their functionality.
- Surface energy balancing (SEBS) has been extended and improved.
- Improved Installation program
|
The new functionality of ILWIS 3.7 Betha
Though ILWIS 3.7 is not finished yet it is nearing its completion. Regarding functionality it is probably finished. 3.7 is mainly made to upgrade ILWIS regarding vector functionality. ILWIS 3.6 and earlier are quite basic regarding vector functionality and
Martin Schouwenburg feels is time to upgrade the vector capabilities to be more up-to-date and to be able to answer some needs for future extensions that would have been difficult to realize within the 'old' ILWIS.
To make this happen he had to rewrite most of internal handling of vectors to make it compatible with simple features specification.
Particularly in the Polygon domain almost all old code had to be discarded. The advantage of this
new design is that it is much easier now to add a number of new vector
applications that would have cost a lot of time to write in the old structure. Added
features are:
PointMapUnion
PointMapIntersect
PointMapSymetricDifference
PointMapDifference
PointMapRelate
SegmentMapVoronoi
SegmentMapTin ( not sure yet if this one will make it to the final)
SegmentMapUnion
SegmentMapIntersect
SegmentMapSymetricDifference
SegmenMapDifference
SegmentMapRelate
PolygonMapBuffer
PolygonMapConvexHull
PolygonMapUnion
PolygonMapIntersect
PolygonMapSymetricDifference
PolygonMapDifference
PolygonMapRelate
 | With respect to coordinate
information, ILWIS is now internally fully 3D although this interface has
not been exposed yet to the outside world, but this is forseen for future
extensions. Under this new design, the Polygon files binary was no longer compatible with earlier versions of ILWIS. It
can still read them, but no longer write them. Due to time constraints and the complex nature of the original Polygon format an export to the old format is
not present in ILWIS 3.7 yet. |
 | The SEBS module and the HydrologicalFlow module are updated and for SEBS help is included in seperate help files. |
 | WMS has been slightly improved ( UI and error handling). |
 | Postgres database access works now as intended. |
 | A number of bugs have been removed and I still am removing more. |
Thank you for your interest in ILWIS, the world's most
user-friendly open source raster + vector GIS / remote sensing software
   | |
|
 |
| WHAT'S
NEW |
| January |
| Shop
on line Click
here. |
| October |
| More
than 500 new nature photos Click
here. |
| Great
new indian summer photos of Aspen
in Wasatch National Forest. |
| Completed
and corrected lists of al bird species in Français,
Deutsch,
Nederlands,
Español. |
| September |
We uploaded more
than 100 photos on national Parks on our Album Share yours too! Click
here |
| Follow
us on Facebook with daily updates |
| Follow
us on Twitter with daily updates |
| Follow
us on LinkedIn with daily updates |
| April |
| Free
open source ILWIS 3.6 has a brand new images import and export
module. Download it now. |
| Fabulous packing lists
for travelers for different kinds of destinations (jungle, mountains,
beach, cities, etc.) and travel types (car, plane, back packing,
etc.) To
the lists. |
| Forum
entry on travel info, like countless phone numbers and links to
airlines, great booking sites, etc, for several countries. Click
here. |
| Album
entry on the forum where
you can upload species of birds, plants, mammals etc. that you want
identified. Click
here. |
| We made a page on
essentials for simple hand-held GPS |
| December |
| New countries: Cape Verde, Djibouti, Equatorial Guinea
Sao Tome & Principe; Seychelles |
| Birdlists of all West
African countries updates |
| WICE analyses the conservation status
of the Godwit
for the World Bank:
Wintering grounds of entire population will disappear in Guinea Bissau. Read
more....... |
| Run ILWIS on Linux.
Read
more... |
| Nature Worldwide forums heavily
spammed and cleaned. Read
more...... |
| ILWIS downloads from ILWIS.ORG
since initiation surpassed 10.000! |
| Collaboration with Bo Beolens' famous
fatbirder
website |
| New
tables for all major countries in South America |
| April |
| Updated
GIS software review on GIS4BIOLOGISTS |
| Posting on Natuurlijke Procesgang in de Oostvaarders
Plassen (in Dutch) |
| Posting on effect to oxygen
production and carbon fixation by trees and forests |
| A downloadable pdf
with the text of the entire Adopt A Ranger website |
| A completely renewed
computer software and service page with lots of free software |
| Unsere Deutsche
übersetzung von Adopt A Ranger macht gute Vortschritte |
|
March |
| The data on protected
areas have been re-loaded |
| Updated reviews of
free
software |
| US Government kills Yellowstone
National Park bisons or buffaloes |
| February |
| "Slaughtering of Seals in Namibia":
Take
a look at a long ignored nature management issue |
|
|
 |
|