Presentation of the Module ＂GRAPHS＂ for Analyzing Geobotanical Data

作     者：Alexander Novakovskiy 

作者机构：Laboratory of Computer Technology and Modeling Institute of Biology Komi Science Center Russian Academy of ScienceSyktyvkar 167982 Russia 

出 版 物：《Journal of Earth Science and Engineering》 (地球科学与工程（英文版）)

年 卷 期：2014年第4卷第2期

页      面：88-93页

学科分类：07[理学] 08[工学] 0835[工学-软件工程] 081202[工学-计算机软件与理论] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0713[理学-生态学] 

主　　题：程序模块 植物地理学 地理数据 演示文稿 Microsoft Excel 加利福尼亚州 数据分析 

摘      要：This paper describes the program module GRAPHS which was developed for data processing in geobotany and ecology fields. The GRAPHS has a simple interface and is integrated into the Microsoft Excel. This allows users to use all features of Microsoft Excel for storage and preparation data for analysis. Calculation of the most common similarity indexes (Jaccarda, Sorenson, Ohai etc.) and their visualization by using different algorithms of the graph theory or hierarchical cluster analysis allows simplifying and accelerating the process of data analysis in ecology or geobotany and makes it clearer. Also, three ordination methods-PCA (principal components analysis), CA (correspondence analysis), NMS (nonmetric multidimensional scaling)-were implemented in the module. The module can be used for vegetation classification, and be used to allocate diagnostic species or to search environmental factors most strongly impact on vegetation. Algorithms of data analysis which were implemented in the module GRAPHS have universal nature so they can be applied in many other fields of science.