1、Tree-Ring LaboratoryLamont Doherty Earth Observatoryof Columbia UniversityPalisades, NYIntroductionProgram ARSTAN is the personal research project of Dr. Edward R. Cook, evolving out of his graduate work at the University of Arizona in the 1980s when the science of dendrochronology was struggling wi
2、th extracting meaningful tree-ring information from closed canopy forest trees. The ARSTAN methodology (AutoRegressive STANdardization) was developed to deal with a certain class of problem that is common to trees growing in closed-canopy forest environments: the “endogenous disturbance” problem.A d
3、etailed description of the ARSTAN methodology is contained in Cooks PhD Dissertation “A Time-Series Analysis Approach to Tree-Ring Standardization and will not be repeated here. Rather, a copy of that dissertation is enclosed in this folder for those who wish to learn more about it. What you do with
4、 the program is ultimately up to you, but be advised that specialized software is only as valuable to the user as the users understanding of what the software does. In an attempt to make the program more user friendly ARSTAN can make a plot at almost every point in the program where there is a signi
5、ficant transformation of the raw data. Use this feature to help you see what is going on with your data and help you interpret better the results.DisclaimerThe authors assume no responsibility for the use and support of this program. Of course we would want to know about any situation that produces
6、an incorrect computation or an impossible result. However, what you do with the program and how you do it, is your business. System Requirements and InstallationProgram ARSTAN was developed entirely on Macintosh computers. What this means is we know more about the behavior of the program on Macs tha
7、n on any other machine. The Windows port of the program is new as of January 2005. We are constantly using the program and updates will appear on our website from time to time. If you are experiencing problems getting the program to run on your computer and you are running one of the two operating s
8、ystems mentioned below, please let us know. Be advised the program can tax your computers abilities resulting in what may appear as a crash. This is not unusual when calculating bootstrapped confidence limits on a site with 100s of series covering the same time interval. Be patient before reaching f
9、or the reset button or ctrl_alt_deleting. It is a good idea to run the program on machines with at least 300mb of available RAM. For larger data sets, 500mb or more is nice.Macintosh OSX1. It is advisable, but not necessary, for all Mac users to install the “Apple Developer Tools” toolbox for OSX 10
10、.1-10.2, or iTools for OSX 10.3 and greater. These may be downloaded for free from Apples “developer” website. 2. Put the folder “Absoft” in your computers Applications folder.3. Copy or move the application (executable) to any location on your computer for use. 4. All input files must reside in the
11、 same folder as the application.Windows XP Home/Professional1. Copy the folder “Absoft80” (with its contents) to your c: drive.2. Continue from step 3 above.Note: The following steps may or may not be necessary depending on the operating system you are using. Try the program first before continuing.
12、Right click on My Computer and select properties. Locate the Environment Variables section of the properties window (in the Advanced tab in Windows 2000) and add a new variable for either your user name or system wide. The variable name must be called PLPLOT_LIB and the value must be: C:Absoft80exam
13、plesPLPLOTexamplesWindows 98 users may need to add the environment variable to your c:autoexec.bat file by typing the following line: set PLPLOT_LIB=C:Important note about input and output file types Macintosh Users: The file type of all ARSTAN input and output files are “unix”.Windows Users: The fi
14、le type is “dos”.USERS GUIDE.Program ARSTAN is a FORTRAN program without a lot of amenities like drop and drag mouse movements, drop down windows, all the great stuff we expect from software today. Its a top down program, meaning you set it up to do what you want first, then you let it run. There ar
15、e three principle modes for running the program, interactive, command and batch. In “interactive” mode you enter the name of a file containing ring-width data, you configure all the options to perform on the data within the file, hit return for “no more options” and let it run.During an interactive mode run ARSTAN produces a logfile, or command file. This text file (“i
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