ILWIS

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ILWIS
ILWIS Logo
Developed by 52° North
Latest release 3.4 Open / July 1, 2007
OS MS-Windows
Genre Geographic information system
License GPL
Website 52°North Product page

ILWIS (Integrated Land and Water Information System) is a GIS / Remote sensing software that integrates image, vector and thematic data. ILWIS features include digitizing, editing, analysis and display of data as well as production of quality maps.

ILWIS was initially developed and distributed by ITC Enschede (International Institute for Geo-Information Science and Earth Observation) in the Netherlands as shareware, but since 1 July 2007 it is distributed under the terms of the GNU General Public License and is thus free software.[1][2] The current version is ILWIS 3.4 Open.

Though lagging behind other similar commercial software in a number of functionalities, ILWIS is expected to improve as open source software. Similar to the GRASS GIS in many respects, ILWIS is however presently available natively only on Microsoft Windows.

Contents

[edit] History

In late 1984, ITC was awarded a grant from the Dutch Ministry of Foreign Affairs, which led to the development of a Geographic Information System (GIS) which could be used as a tool for land use planning and watershed management studies. By the end of 1988 the DOS version 1.0 of the Integrated Land and Water Information System (ILWIS) was released. Two years later, 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). From July 1st 2007, ILWIS 3.4 Open is being be distributed as an open source software under GPL license.[3]

[edit] Release history

This table is based on the release notes of ILWIS.

Old Version Current Version Future Version
Branch Version Release date Significant changes
3.1 3.1 April 2002
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.
3.2 3.2 January, 2004 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.
3.3 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.
3.4 3.4 Open July 1, 2007 GPL version from 52° N with proprietary components removed.

[edit] Roadmap

ILWIS building currently relies on the Microsoft Visual 6 compile environment which will be switched over to the GCC compiler. After successful completion of the migration to GCC, the plan is to break down ILWIS Open into individual components. To reuse and deploy ILWIS’ GIS and image processing functionality also in spatial data infrastructures (SDI), its functions will be offered in an open framework as distributed services, in two ways:

  1. As java service proxies accessible to programmers and
  2. As OGC - based services accessible to client applications.

The framework supports the search and access of services through a service registry and can be used together with client tools like uDig.[3]

[edit] Features

ILWIS uses GIS techniques that integrate image processing capabilities, a tabular database and conventional GIS characteristics.[4] The major features include:

  • Integrated raster and vector design[5]
  • On-screen and tablet digitizing
  • Comprehensive set of image processing tools
  • Orthophoto, image georeferencing, transformation and mosaicing
  • Advanced modeling and spatial data analysis
  • 3D visualization[6] with interactive editing for optimal view findings
  • Rich projection and coordinate system library
  • Geostatistical analyses, with Kriging for improved interpolation[7]
  • Import and export using the GDAL library
  • Advanced data management
  • WYSIWYG Layout editor to position annotation and multiple map views on scale
  • Advanced Data Storage
  • Stereoscopy tools - To create a stereo pair from two aerial photographs
  • Transparency to display raster and polygon maps
  • Pyramid layers for fast display of large raster maps
  • ADO/ODBC to access databases
  • Hydrologic Flow Operations
  • GARtrip import - Map Import allows the import of GARtrip Text files with GPS data
  • Spatial Multiple Criteria Evaluation (SMCE)
  • DEM operations[8]
  • Variable Threshold Computation, to help preparing a threshold map for drainage network extraction
  • Horton Statistics [9], to calculate the number of streams, the average stream length, the average area of catchments for Strahler stream orders
  • Georeference editors

[edit] Applications

[edit] Applications in Earth Sciences

[edit] Applied geomorphology and Natural hazards

[edit] Engineering geology

[edit] Surface hydrology

  • Watershed area management studies[15]
  • Irrigation water requirement[16]
  • Irrigation area characteristics
  • Determination of peak runoff
  • Morgan approach for erosion modelling

[edit] Hydro geology

[edit] Geology

  • Remote sensing and GIS techniques applied to geological survey
  • Geological data integration

[edit] Applications in Environmental Management

[edit] Neighborhood modelling

  • Modelling with neighbourhood operators
  • Extracting topographic and terrain variables for distributed models

[edit] Data combination

  • Tools for map analysis applied to the selection of a waste disposal site

[edit] Soil pollution management

  • Environmental chemistry of contaminated soils[18]

[edit] Land Resource and Urban Surveys

[edit] Urban surveys

  • Updating a land use map with oblique air photos
  • Analysis of urban change and spatial pattern
  • Analysis of suitability for urban expansion

[edit] Land use planning

  • Analysing the fuelwood demand
  • Vegetation cover studies[19]
  • Land resource management[20]
  • Regional economic planning[21]

[edit] Soil surveys

[edit] Global radiation studies

[edit] Application in Cartography

[edit] Other Applications

[edit] Criticisms

ILWIS though has very good GIS analysis modules, lacks the user friendliness in certain areas. For example, drawing a polygon is not straight forward action, but requires drawing of lines and then going through a quirky procedure called polygonizing. Importing through PCI's GeoGateway being a proprietary component has been removed in version 3.4 open and the available GDAL library is not well integrated.[27]

[edit] See also

Free software Portal

[edit] References

  1. ^ ITC's GIS software ILWIS migrates to open source (2007-01-30). Retrieved on 2007-06-26.
  2. ^ ILWIS 3.4 Open. 52°North (2007-03-27). Retrieved on 2007-07-01.
  3. ^ a b FOSS4G 2007 : ILWIS and 52°North: From closed source to open source and interoperable image services. Retrieved on 2007-07-02.
  4. ^ Spiteri (1997). Remote Sensing 96 Integrated Applications, 1, Taylor & Francis, 380. ISBN 905410855X. 
  5. ^ Wim Koolhoven and Jelle Wind (1996). "Domains in ILWIS: system knowledge about meaning of data". Proceedings of the second joint European conference & exhibition on Geographical information, Barcelona, Spain I: 77–80. IOS Press. 
  6. ^ A Partovi (2003). Suitability Study Of ASTER Data Geometry To Digitize Contour Lines In ILWIS. Master degree thesis. 
  7. ^ J Hendrikse (2000). "GEOSTATISTICS IN ILWIS". INTERNATIONAL ARCHIVES OF PHOTOGRAMMETRY AND REMOTE SENSING. INTERNATIONAL SOCIETY FOR PHOTOGRAMMETRY AND REMOTE SENSING. 
  8. ^ Nag, S. K. (2000). "DIGITAL ELEVATION MODELING USING ILWIS 2.1 IN PARTS OF PURULIA DISTRICT, WEST BENGAL. INDIA". INTERNATIONAL ARCHIVES OF PHOTOGRAMMETRY AND REMOTE SENSING 33 (B$/2): 726–733. INTERNATIONAL SOCIETY FOR PHOTOGRAMMETRY AND REMOTE SENSING. ISSN 0256-1840. 
  9. ^ Quan, N. H.. "RAINFALL-RUNOFF MODELING IN THE UNGAUGED CAN LE CATCHMENT, SAIGON RIVER BASIN". 
  10. ^ E.J.M. Carranza and O.T. Castro (2003). "PREDICTIVE MAPPING OF LAHAR-INUNDATION HAZARD ZONES: EXAMPLE FROM WEST PINATUBO AREA, PHILIPPINES" ([dead link] – Scholar search). 2003 Annual Conference of International Association of Mathematical Geology. International Association of Mathematical Geology. 
  11. ^ SK Jain, RD Singh, SM Seth (2000). "Design Flood Estimation Using GIS Supported GIUHApproach". Water Resources Management. Springer. 
  12. ^ BOCCO, GERARDO; VALENZUELA, CARLOSR (1988). "Integration of GIS and image processing in soil erosion studies using ILWIS (Integrated Land and Watershed Management Information System)". ITC Journal (no. 4): pp. 309–319. 
  13. ^ F Wang, Z Vekerdy, JL van Genderen. DATABASE MANAGEMENT AND IMPLEMENTATION FOR COAL FIRE DETECTION AND MONITORING IN THE RUJIGOU COALFIELD, NORTHWEST CHINA. Retrieved on 2000-06-10.
  14. ^ Rautela, P.; S. S. Pant (2007). "New methodology for demarcating high road accident risk-prone stretches in mountain roads". CURRENT SCIENCE 92 (8): 1157. 
  15. ^ S KARANJIT. "REMOTE SENSING AND GIS IN WATERSHED AREA MANAGEMENT". Gis Development. 
  16. ^ UTSET Angel; LOPEZ Gilberto; Dolman A.J.; Hall A.J.; Kavvas M.L.; Oki T.; Pomeroy J.W. (2001). "Regional mechanistic estimations of sugar-cane water use". IAHS-AISH publication (270): 35–40. International Association of Hydrological Sciences. 
  17. ^ Aubazhagan, S. Aschenbrenner, F. Knoblich, K. (1999). "Geographic information system for artificial recharge study in Germany". Geoscience and Remote Sensing Symposium, 1999, IGARSS '99 Proceedings 5: 2380–2382. IEEE 1999 International. ISSN 0-7803-5207-6. 
  18. ^ GEORGES EKOSSE1; PAUL S. FOUCHE (2005). "Using GIS to understand the environmental chemistry of manganese contaminated soils, Kgwakgwe area, Botswana". Journal of Applied Sciences and Environmental Management 9 (2): 37–42. World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt. ISSN 1119-8362. 
  19. ^ M. Farahnak Ghazani, K. Najibzadeh and M. A. Ghahremani (2004). "ESTIMATION OF VEGETATION COVER BY USING LANDSAT ETM+ DATA". The Joint Agriculture and Natural Resources Symposium, Tabriz – Ganja, May 14-16. 
  20. ^ Qiming Zhou (1995). "The Integration of GIS and Remote Sensing for Environmental and Land Resource Management". Proceedings of GIS AM/FM ASIA’95 Conference: C–2-1–C-2–9. 
  21. ^ Qiming Zhou (1994). "Use of Remote Sensing and GIS for Environmentally Sound Regional Economic Planning". 1994 Institute of Australian Geographers Conference. 
  22. ^ Farshad, A. (1994). "Spectral image analysis in soil micromorphology with ILWIS". ITC JOURNAL (2): 168. ITC. ISSN 0303-2434. 
  23. ^ J. O., P. Kisoyan and M. C. Chemelil1 (2005). "Estimation of Potential Soil Erosion for River Perkerra Catchment in Kenya". Water Resources Management 19 (2): 133–143. Springer Netherlands. doi:10.1007/s11269-005-2706-5. ISSN 0920-4741. 
  24. ^ Renschler, C.; Diekkrueger, B.; Mannaerts, C. (1999). "Regionalization in surface runoff and soil erosion risk evaluation" (254): 233–241. IAHS Publication (International Association of Hydrological Sciences). 
  25. ^ Kandirmaz, H. M. Yegingil, L. Pestemalci, V. Emrahoglu, N. (2004). "Daily global solar radiation mapping of Turkey using Meteosat satellite data". INTERNATIONAL JOURNAL OF REMOTE SENSING 25 (II): 2159–2168. Taylor & Francis. ISSN 0143-1161. 
  26. ^ Kushwaha, S. P. S.; A. Khan, B. Habib, A. Quadri, A. Singh (2004). "Evaluation of sambar and muntjak habitats using geostatistical modelling.". Current Science 86 (10): 1390–1400. 
  27. ^ [Ilwis Importing .img to ILWIS]. Retrieved on 2000-01-12.

[edit] External links

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