# bf: Nicholson's 1954 blowfly data In synlik: Synthetic Likelihood Methods for Intractable Likelihoods

## Description

Data from figures 3 and 4 of Nicholson, 1954.

## Usage

 `1` ```data(bf1) ```

## Arguments

 `bf1` the dataset name

## Details

`bf1` is Nisbet and Gurney's run 1, and Nicholson's (1954) figure 3 (adult food limitation). The data are actually from the global population dynamics database at Silwood. They are daily: Nicholson's figure 3 plots data every other day, but the text says that measurements were taken daily. However elsewhere they are reported every other day. Probably best to assume that they have been interpolated to daily.

`bf2` and `bf3` are digitized from Nicholson's (1954) figure 4. `bf2` is the upper series: larval food limitation, with 50g per day of larval food provided. `bf3` is the lower series: same set up, half as much food. These are Nisbet and Gurney's runs 2 and 3, respectively.

## Value

matrix of replicate data series

## Author(s)

Simon N. Wood, maintainer Matteo Fasiolo <[email protected]@gmail.com>

## References

Alexander J Nicholson. An outline of the dynamics of animal populations. Australian Journal of Zoology, 2(1):9–65, 1954.

blowfly

## Examples

 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13 14``` ``` library(synlik) data(bf1) data(bf2) data(bf3) par(mfrow=c(3,1),mar=c(4,4,1,1)) with(bf1,plot(day,pop,type="l")) with(bf1,points(day,pop,pch=20,cex=.8)) abline(mean(bf1\$pop),0,col=2); abline(median(bf1\$pop),0,col=3); with(bf2,plot(day,pop,type="l")) with(bf2,points(day,pop,pch=20,cex=.8)) abline(mean(bf2\$pop),0,col=2); abline(median(bf2\$pop),0,col=3); with(bf3,plot(day,pop,type="l")) with(bf3,points(day,pop,pch=20,cex=.8)) abline(mean(bf3\$pop),0,col=2); abline(median(bf3\$pop),0,col=3); ```

### Example output

```This is "synlik"  0.1.1
```

synlik documentation built on May 23, 2018, 5:03 p.m.