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大小:2.99 MB
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时间:2019-03-15
《Introduction to the R project for statistical computing for use at ITC.pdf》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、IntroductiontotheRProjectforStatisticalComputingforuseatITCDGRossiterInternationalInstituteforGeo-informationScience&EarthObservationEnschede(NL)http://www.itc.nl/personal/rossiterDecember9,2009Actualvs.modelledstrawyields9●●●●●●●●●●●●●●●5.0●●●●●●●●●●●●●●●●8●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●
2、●●●●●●●●●●●4.5●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●7●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●4.0●●●●●●●●●●●●●●●●●●●●●●●Actual●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●6●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●Grainyield,lbsperplot
3、3.5●●●●●●●●●●●●●●●●●●●●●●●●5●●●●●●●●●●●●●●●●●●●●3.0●●4456789135791113151719212325ModelledColumnnumberFrequencyhistogram,Meuseleadconcentration6053GLS2nd−ordertrendsurface,subsoilclay%50403400003350003026Frequency33000020171717N1232500010432000033110010315000010020030040050060070066000067000068
4、0000690000700000leadconcentration,mgkg−1ECountsshownabovebar,actualvaluesshownwithrugplotContents1WhatisR?12WhyRforITC?22.1Advantages...............................22.2Disadvantages.............................32.3Alternatives...............................42.3.1S-PLUS.........................
5、.....42.3.2Statisticalpackages......................52.3.3Special-purposestatisticalprograms...........52.3.4Spreadsheets..........................52.3.5Appliedmathematicsprograms..............63UsingRforWindows63.1RontheITCnetwork.........................63.2StartingR.........................
6、.......63.3StoppingR................................73.4Settingupaworkspace........................73.5Thecommandprompt........................83.6On-linehelpinR............................93.7Internethelp..............................103.8Savingyouranalysissteps......................103.9Savi
7、ngyourgraphs..........................103.10Writingandrunningscripts.....................113.11TheTinn-Rcodeeditor.......................123.12UsingtheRcmdrGUI.........................123.13Loadingoptionalpackages......................1
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