flowplaces {cartograflow} | R Documentation |

## Computes flow indicators per places

### Description

Compute indicators per places (origin and/or destination ) from the margins of the matrix. Ex/ in and out degrees, gross and net flows, asymmetry .... from an initial matrix

### Usage

```
flowplaces(tab, origin = NULL, destination = NULL, fij = NULL, format, x)
```

### Arguments

`tab` |
is the input flow dataset |

`origin` |
the place of origin code |

`destination` |
the place of destination code |

`fij` |
the flow value between origin and destination places |

`format` |
specify the flow dataset format, "M " for square matrix [n*n] or "L" for long [i,j,data] |

`x` |
enter the flowplaces indicator type : "allflowplaces", "ini", "outi", "degi","intra", "Oi", "Dj", voli","bali","asyi". See Details. |

### Details

This function compute for all pairs or origin-destination places (i,j)
a data table that describes the flows from the point of view of Origin / destination places
- x = "ini" for the number of incoming links (as in-degree)

- x = "outi" for the number of outcoming links (as out-degree)

- x = "degi" for the total number of links (as in and out degrees)

- x = "intra" for total intra zonal interaction (if main diagonal is not empty

- x = "Dj" for the total flows received by (j) place

- x = "voli" for the total volume of flow per place

- x = "bali" for the net balance of flow per place

- x = "asyi" for the asymetry of flow per place

- x = "allflowplaces" for computing all the above indicators

### Examples

```
library(cartograflow)
data(flowdata)
bkg <- system.file("shape/MGP_TER.shp",
package = "cartograflow",
lib.loc = NULL, mustWork = TRUE)
###1:Computes the total flow volume of places : Long format
voli <- flowplaces(flows, origin ="i",destination="j",fij="Fij",format = "L", x = "voli")
###2:Computes the total flows received by destination place : Long format
tab_bali <- flowplaces(flows, origin ="i",destination="j",fij="Fij",format = "L", x = "bali")
```

*cartograflow*version 1.0.5 Index]