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本科毕业设计（论文） 中英文对照翻译 院（系部）资源环境学院　 专业名称 地理信息系统　 年级班级　2001-03 学生姓名　?毛巍 指导老师 张鸿升 二00五年六月十日  英文翻译（原文） Introduction to Model Maker A model is a set of instructions that is processed by the IMAGINE Spatial Modeler component for performing GIS and image processing operations. The IMAGINE Model Maker is an editor for creating models using a palette of tools. These tools are used to place graphics representing input data, functions, criteria, and output data on a page to create a graphical model by drawing its flow chart. The Spatial Modeler Language (SML) is a modeling language that is used by Model Maker to execute the operations specified in the graphical models that you create. You can also use the Spatial Modeler Language directly to write your own script models that may be run from the Model Librarian. If a calibrated file is input to a model, output files created by the model will also be calibrated. If a subset of the area of the input file is output, the calibration is adjusted accordingly. If there are any other files input to the model, they must be the same size and have exactly the same calibration information as the first calibrated input file. You cannot input calibrated and georeferenced files together. This documentation explains: General Capabilities, Starting Model Maker, Defining Objects, Using Function Definitions, Specifying Criteria, Output Parameters, Creating a Model, Running a Model, Using the Spatial Modeler Language General Capabilities Model Maker allows you to write both simple and complex models that incorporate GIS and image processing functions. These include: ※ mathematical operations on raster layers (adding, subtracting, multiplying, ratioing, or other image algebra functions), ※ convolution filtering, ※ neighborhood analyses (analyzing a pixel based on the values of neighboring pixels), ※ subsetting and mosaicking, ※ principal components analysis, and ※ contiguity analysis. The res