ЯтомизоnoR

R, Statistics

Calculates population growth rate λ along element changes

The previous article introduced the sensitivity and elasticity to seasonal matrix model of imaginary annual plant.  Both sensitivity and elasticity are partial derivatives.  This means the values can only predict … Continue reading

November 23, 2014 · Leave a comment

Sensitivity and Elasticity of seasonal matrix model

The previous article introduced the seasonal matrices and the population growth rate λ of imaginary annual plant.  In this article, let’s try the sensitivity analysis of these matrices and the … Continue reading

October 13, 2014 · 1 Comment

Stage abundances, eigenvector of population matrix

The previous article introduced the seasonal matrices and the population growth rate λ of imaginary annual plant.  This article focuses on  the meaning of the eigenvector at first, and then … Continue reading

September 28, 2014 · Leave a comment

Periodic matrix model for annual plant demography

Let’s challenge to build a matrix population model of annual organisms and then calculate the population growth rate λ using R. Consider a simple life cycle of imaginary annual plants; … Continue reading

August 31, 2014 · 3 Comments

boxplotdbl 1.2.2 and diaplt 1.2.1 packages are now available at CRAN

The boxplotdbl 1.2.2 and the diaplt 1.2.1 are listed at CRAN.  Now the procedure to install, load and use the package is: install.packages(‘boxplotdbl’) library(boxplotdbl) f <- as.factor(rep(1:2, each=5)) boxplotdou(f, rnorm(10), … Continue reading

November 24, 2013 · 3 Comments

Double Box Plot package boxplotdbl 1.2.0 released

This article describes changes from the first release on March 2013, including changes from the beta release of package boxplotdbl.

November 24, 2013 · 1 Comment

Beads Summary Plot of Ranges for R

The beadsplot function is designed for a data frame with a factor column and many observation columns.  This function summarize the data visually.  The builtin iris data is suitable to … Continue reading

November 12, 2013 · 1 Comment
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