کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10250265 159127 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A simple program to measure and analyse tree rings using Excel, R and SigmaScan
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علم هواشناسی
پیش نمایش صفحه اول مقاله
A simple program to measure and analyse tree rings using Excel, R and SigmaScan
چکیده انگلیسی
I present a new software that links a program for image analysis (SigmaScan), one for spreadsheets (Excel) and one for statistical analysis (R) for applications of tree-ring analysis. The first macro measures ring width marked by the user on scanned images, stores raw and detrended data in Excel and calculates the distance to the pith and inter-series correlations. A second macro measures darkness along a defined path to identify latewood-earlywood transition in conifers, and a third shows the potential for automatic detection of boundaries. Written in Visual Basic for Applications, the code makes use of the advantages of existing programs and is consequently very economic and relatively simple to adjust to the requirements of specific projects or to expand making use of already available code.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dendrochronologia - Volume 29, Issue 4, 2011, Pages 245-250
نویسندگان
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