## 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

## 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

## 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

## 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

## 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

## 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.

## 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