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The IDRISI GIS tool set offers over analytical tools, primarily oriented to raster data, The IDRISI Image Processing System in TerrSet is an extensive set of. ) while others, such as IDRISI’s CA_MARKOV, can simulate change The version of GEOMOD currently in IDRISI is essentially the same model published. This agrees with the IDRISI. Andes Manual[1] which indicates that the most information for many environments is contained in the near infrared (band 4) and red.

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Ellipsoid Parameters Appendix 2: Datum Parameters Appendix 3: Error Propagation Formulas This software remains the property of Clark Labs, Clark University. However, Clark Labs grants the purchaser non-exclusive license to use this software subject to the terms outlined in this statement.

The purchaser of a single-user license of IDRISI Andes is licensed to install and use the software on no more than one single-user computer system. The purchaser is also permitted to make a backup copy of the IDRISI Andes distribution media for the sole purpose of protecting the purchaser s investment from loss. The purchaser may not rent or lease the software, but may transfer the license to another user upon written agreement from Clark Labs. The user may not reverse-engineer, decompile, or disassemble the IDRISI Andes software or any of its associated software programs contained on the distribution media.

All rights are reserved. No part of the manuals may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopy, microfilm, recording, or otherwise without written consent of Clark Labs. Direct translation of any part of the manuals is also prohibited without the written permission of the copyright holder. Warranty This software is sold as is, and the information in this manual is subject to change without notice.

Furthermore, the Clark Labs assumes no responsibility for any errors that may appear in this document, or in the software it describes. Windows and Access are trademarks of Microsoft Corporation. MapInfo is a registered trademark of MapInfo Corporation. Adobe and the Adobe logo are trademarks of Adobe Systems Incorporated.

All other product names mentioned in this volume may be trademarks or registered trademarks of their respective companies and are hereby acknowl- Chapter 1 IDRISI Andes Introduction 3.

IDRISI is the industry leader in raster analytical functionality, covering the full spectrum of GIS and remote sensing needs from database query, to spatial modeling, to image enhancement and classification. Special facilities are included for environmental monitoring and natural resource management, including land change modeling and time series analysis, multicriteria and multi-objective decision support, uncertainty and risk analysis, simulation modeling, surface interpolation and statistical characterization.

Yet, despite the highly sophisticated nature of these capabilities, the system is very easy to use. IDRISI consists of a main interface program containing the menu and toolbar system and a collection of nearly program modules that provide facilities for the input, display and analysis of geographic data.

Detailed information about each module, as well as a variety of other technical information, may be found in the on-line Help System.

The tutorial exercises are appropriate for use in either self-training or in classroom settings. About Clark Labs Clark Labs is dedicated to the research and development of geospatial technologies for effective and responsible decision making for environmental management, sustainable resource development and equitable resource allocation.

Environmental managers and researchers benefit from the unsurpassed range of geospatial tools nearly modules for the analysis and display of digital spatial information. Based within the world-renowned Graduate School of Geography at Clark University, Clark Labs is known for pioneering advancements in areas such as decision support, uncertainty management, classifier development, change and time series analysis, and dynamic modeling.

Partnering with such organizations as USDA, the United Nations and Conservation International, Clark Labs leverages its academic base to develop innovative and customized research tools, provide software solutions to organizations in need and apply geospatial expertise to a range of real-world problems.

Educated at the University of Cordoba, and widely traveled in Europe, North Africa, the Middle East, and Central Asia, al-idrisi was a cartographer and geographer of major significance during the medieval period.

Commissioned by the Norman king Roger of Sicily to prepare a geographical survey of the world, al-idrisi led a fifteen-year collaborative effort by scholars and technicians based at the Norman Court at Palermo. Based on direct field studies as well as archival sources, the maps and texts that resulted from that collaborative effort served as primary reference material for over years.


The chapter System Overview describes the nature of the user interface. The Display System chapter discusses issues related to the display of geographic data and the interactive display features available for their exploration.

The Database Workshop chapter describes the database management system, giving detailed information on all its functions, including the ability to link the database to a map, and its ability to use structured query language SQL. It also outlines the logic of the menu structure. The Georeferencing chapter presents issues of geodesy, geodetic datums, projections and reference systems in understandable terminology.

While many project-level applications of GIS and image processing do not require georeferencing to a geodetic system, integration of ande with local or national government mapping will unquestionably require that the issues treated in this chapter be addressed. The Decision Support chapters will be of particular interest idisi those involved with resource allocation and planning. Several chapters are included that relate to the use of remotely-sensed data and image processing techniques.

The Image Restoration chapter suggests methods for removing or diminishing the degree of random and systematic distortions that occur in imagery. A separate chapter on Fourier Analysis continues this discussion of methods for noise removal. The Classification of Remotely Sensed Imagery chapter outlines in detail the IDRISI approach to image classification, including the use of “soft” and “fuzzy” classifiers for this process.

Use of hyperspectral data is also discussed in this chapter.

The chapter on Vegetation Indices describes manuao vegetation index models included in IDRISI for the transformation of satellite imagery into images that indicate the relative amount of biomass present. Topics covered include pairwise comparisons, procedures for distinguishing true change from natural variability, temporal profiling, and time series analysis by means of Principal Components Analysis. The Land Change Modeler chapter presents the tools included idrsii LCM for analyzing landcover change, projecting manul course into the future, and assessing its implications for habitat and biodiversity change.

Another group of chapters addresses issues of modeling continuous raster surfaces. In the Anisotropic Cost Analysis chapter, the brief discussion of cost distance procedures in the Introduction to GIS chapter is extended to consider the case of anisotropic forces and frictions i.

These tools are somewhat experimental, but offer special opportunities for the modeling of dynamic phenomena such as groundwater flows, forest fire movements, oil spills, and so on.

IDRISI Andes Guide to GIS and Image Processing

Three chapters focus on issues of spatial interpolation from sample data. The Surface Interpolation chapter gives an overview of the techniques commonly encountered in GIS and points manhal some of their relative advantages and disadvantages.

The chapter Geostatistics presents background information for the use of advanced geostatistical procedures such as kriging and simulation.

This volume also contains a series of Appendices containing georeferencing parameters, most importantly, detailed tables of constants used for transformation between map datums yes, in geodesy, the plural of datum is datums, and not data! The exercises are in a format suitable for classroom use as well as individual instruction. Literally thousands of users have learned the basics of GIS by means of these exercises.

This includes information on operation, special notes, explanations xndes error messages, command line syntax, and so on. Every module has a help button that manaul be clicked on to get help for that module.

The Help System can also be accessed by clicking on the Help menu item. You will find there a table of contents, andfs, and a keyword search facility. Our users are encouraged to provide feedback on their experience and methods of application. To contact Clark Labs, our address is: Our office hours are from An answering machine takes messages after hours. Clark Labs Return Policy Returns are only accepted due idrii installation difficulties and must receive prior authorization from Customer Support.

Clark Labs Technical Support The Clark Labs is dedicated to providing registered users with quality technical support.

For those who have purchased technical support we provide expert assistance on the following types of issues: If your installed version has a lower release number, download and install the update. After updating, check to see if your problem has been resolved. If you are experiencing a technical problem with a specific module or you are receiving unexpected results, the problem resolution may be in the software s Help System. If the update and the Help System information have not resolved your problem, please contact our Technical Assistance Staff via at For your convenience, we provide online forms on our Web site s Technical Assistance page.


These forms provide us with all of the information we require to resolve your problem as quickly as possible. You must provide the following in your initial contact with us: Your Customer ID number, name, phone and address if available.

The name and version number of the Clark Labs product you are using. A description of your hardware and operating system. A detailed description of the problem you are experiencing.

This should include a list and description of the data sets involved, a description of the operation you are trying to accomplish, and a step by step description of what you have tried so far with the specific values you entered into the module s dialog box. You should also include the exact text of any error messages you receive. Today, a variety of software tools are available to assist this activity. However, they can differ from one another quite significantly, in part because of the way they represent and work with geographic data, but also because of the relative emphasis they place on these various operations.

In this chapter, we will explore these differences as a means of understanding the special characteristics of the IDRISI system. Components of a GIS Although we think of a GIS as a single piece of software, it is typically made up of a variety of different components. Figure gives a broad overview of the software components typically found in a GIS.

Not all systems have all of these elements, but to be a true GIS, an essential group must be found. Spatial and Attribute Database Central to the system is the database a collection of maps and associated information in digital form. Since the database is concerned with earth surface features, it can be seen to be comprised of two elements a spatial database describing the geography shape and position of earth surface features, and an attribute database describing the characteristics or qualities of these features.

Thus, for example, we might have a property parcel defined in the spatial database and qualities such as its landuse, owner, property valuation, and so on, in the attribute database. In some systems, the spatial and attribute databases are rigidly distinguished from one another, while in others they are closely integrated into a single entity hence the line extending only half-way through the middle circle of Figure This will be explored further below when we examine techniques for the digital representation mnaual map data.

Cartographic Display System Surrounding the central database, we have a series of software components. The most basic of these is the Cartographic Display System.

IDRISI Andes Guide to GIS and Image Processing – PDF

The cartographic display system allows one to take selected elements of the database and produce map output on the screen or manuxl hardcopy device such as a printer or plotter. The range of cartographic production capabilities among GIS software systems is great. Idrjsi provide only very basic cartographic output, and rely upon the use of high quality publication software systems for more sophisticated production needs such as color separation. IDRISI allows for highly interactive and flexible on-screen cartographic composition, including the specification of multiple data layers, customization and positioning of map elements such as annotation, scale bars, insets and so forth, and customized color and symbol sets.

IDRISI map compositions may be saved for later display, printed to Windows-compatible devices, and exported in a variety of common desktop publishing formats. Software systems that are only capable of accessing and displaying elements of the database are often referred to as Viewers or Electronic Atlases. With a map digitizing system, one can take existing paper maps and convert them into digital form, thus further developing the database.

In the most common method of digitizing, one attaches the paper map to a digitizing tablet or board, then traces the features of interest with a stylus or puck according to the procedures required by the digitizing software.