TAILIEUCHUNG - GEOSPATIAL MODELLING ENVIRONMENT

Over half of the world’s poor live in rural areas. Although urban poverty is rising, the correlation between poverty and remoteness from urban centres is strong in most countries and is expected to remain so in the foreseeable future. As compared with their urban counterparts, rural people are often isolated from economic opportunities and have less access to basic social services. Resource degradation is an acute problem in rural areas, with some 60% of the world’s poorest people living in ecologically vulnerable areas (Angelsen, 1997). The situation is worst in Africa, with two thirds of the continent being deserts or drylands. Africa also has extensive. | GEOSPATIAL MODELLING ENVIRONMENT Version RC2 gme HAWTHORNE L. BEYER Don t miss 1. The page-linked keyword index at the back. 2. Section Automation and batch processing. 3. The Hawthstools to GME conversion table in the Appendix. 4. The page-linked Table of Contents at the beginning. IMPORTANT NOTICE This is a beta version of the new Geospatial Modelling Environment the next generation of HawthsTools. All of the commands listed in this document have been tested to the Beta 2 level that means they have passed a basic level of testing and consistency checks. However it is highly recommended that you inspect the output from these commands carefully to ensure it is logical and consistent with your expectations. Please do report any bugs you encounter Ideally your email will include a zipped sample of data that I can use to replicate the problem. At the very least please copy and paste the entire contents of any error messages received. My email is hawthorne@. Thanks for your help in identifying problems. 1 Contents 1 INTRODUCING THE GEOSPATIAL MODELLING ENVIRONMENT 6 Overview. 6 Design philosphy. 6 2 HOW TO USE GME 8 Instructions and tips for using this interface. 8 Working with geodatabases. 9 Automation and batch processing. 10 Projection definition files. 14 Specifying statistical and empirical distributions. 15 Using GME with Python and ArcToolbox tools . 17 3 COMMAND REFERENCE 19 Strategic Commands . 19 addarea . 23 addcodedfield . 24 addlength . 26 addxy . 27 . 30 citation . 31 clipraster . 31 cliprasterbypolys . 32 contour . 33 . 34 . 35 . 35 . 36 . 37 . 38 . 38 . 39

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