User's guide to SMATR : standardised major axis tests and routines version 2.0, copyright 2006

User's guide to SMATR : standardised major axis tests and routines version 2.0, copyright 2006
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发表时间:
2006
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通讯作者:
D. Falster;D. Warton;I. Wright
D. Falster;D. Warton;I. Wright
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作者:
D. Falster;D. Warton;I. Wright

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SMATR是一个免费软件程序,用于将双变量直线拟合到数据以及对这类直线进行推断。可以使用标准化主轴(SMA)、主轴(MA)或普通最小二乘法回归(OLS)技术来拟合直线。SMATR中可用的程序使您能够: - 使用SMA、MA或OLS方法将直线拟合到数据组 - 围绕斜率和截距参数构建精确的置信区间,并将其与假设值进行比较 - 检验拟合到多个组的直线之间是否有共同的斜率或截距 - 检验拟合到多个组的直线之间沿共同轴是否有偏移 - 拟合强制通过原点的直线(适用于系统发育分析) - 将测量误差纳入参数估计。 有关这些统计数据的使用以及基础公式及其验证的详细信息可在以下文献中找到:沃顿(Warton),DI;赖特(Wright),IJ;法尔斯泰(Falster),DS;韦斯托比(Westoby),M(2006年),异速生长的双变量直线拟合方法。
SMATR is a freeware program used for fitting bivariate lines to data and for making inferences about such lines. A line can be fitted using standardised major axis (SMA), major axis (MA) or ordinary least squares regression (OLS) techniques. The routines available in SMATR allow you to: - fit lines to groups of data using SMA, MA or OLS methods - construct exact confidence intervals around slope and intercept parameters and compare these to hypothesised values - test for a common a common slope or elevation among lines fitted to several groups - test for a shift along a common axis among lines fitted to several groups - fit lines forced through the origin (appropriate for phylogenetic analyses) - incorporate measurement error into parameter estimates. Details about the use of these statistics and about the underlying formulas and their validation can be found in: Warton, DI, IJ Wright, DS Falster, and M Westoby (2006) Bivariate line-fitting methods for allometry.