https://github.com/daroczig/migration.indices
Migration indices
https://github.com/daroczig/migration.indices
Last synced: about 1 year ago
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Migration indices
- Host: GitHub
- URL: https://github.com/daroczig/migration.indices
- Owner: daroczig
- Created: 2012-05-15T13:58:23.000Z (about 14 years ago)
- Default Branch: master
- Last Pushed: 2014-06-14T22:41:35.000Z (about 12 years ago)
- Last Synced: 2025-04-10T06:59:33.354Z (about 1 year ago)
- Language: R
- Size: 449 KB
- Stars: 3
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
This package provides various indices, like Crude Migration Rate, different Gini indices or the Coefficient of Variation among others, to show the (un)equality of migration.
# Installation
Most recent stable version can be installed directly from CRAN:
```
install.packages('migration.indices')
```
Or please use `devtools` for the development version: [](https://travis-ci.org/daroczig/migration.indices)
```
library(devtools)
install_github('migration.indices', 'daroczig')
```
# Examples:
The below migration matrix is a demo dataset based on
* David A. Plane and Gordon F. Mulligan (1997): Measuring Spatial Focusing in a Migration System. In. Demography, Vol. 34, No. 2 (May, 1997), pp. 251-262
```r
library(migration.indices)
data(migration.hyp)
res <- migration.gini(migration.hyp)
res
```
Resulting in:
```
Total Flows Gini Index: 0.2222222
Rows Gini Index: 0
Standardized Rows Gini Index: 0
Columns Gini Index: 0.05555556
Standardized Columns Gini Index: 25
Exchange Gini Index: 0.05555556
Standardized Exchange Gini Index: 25
In-migration Field Gini Index: vector
Weighted In-migration Gini Index: 0.1222222
Out-migration Field Gini Index: vector
Weighted Out-migration Gini Index: 0
Migration-weighted Mean Gini Index: 0.06111111
```
Where *In* and *Out-migration Field Gini Index* are vectors:
```rout
> res$migration.gini.in
[1] 0.2000000 0.5000000 0.3333333
> res$migration.gini.out
[1] 0 0 0
```
## World dataset
Using the [Global Bilateral Migration Database](http://data.worldbank.org/data-catalog/global-bilateral-migration-database) (2000) of World Bank:
```
data(migration.world)
migration.gini(migration.world)
```
Results in:
```
Total Flows Gini Index: 0.9855174
Rows Gini Index: 0.004272225
Standardized Rows Gini Index: 0.4335008
Columns Gini Index: 0.004067787
Standardized Columns Gini Index: 0.4127565
Exchange Gini Index: 1.382263e-05
Standardized Exchange Gini Index: 0.001402575
In-migration Field Gini Index: vector
Weighted In-migration Gini Index: 0.004241788
Out-migration Field Gini Index: vector
Weighted Out-migration Gini Index: 0.004171575
Migration-weighted Mean Gini Index: 0.004206681
```