# Calculate intersample distances for a set of X-Y coordinates

### Description

calc.dist calculates and stores the distance matrix for all X-Y pairs. It works on a dataset where the first two columns are x and y coordinates

### Usage

1 | ```
calc.dist(datafile)
``` |

### Arguments

`datafile` |
a dataset where the first two columns are x and y coordinates. Further columns can contain observed variables for subsequent modeling; these are ignored here. |

### Details

datafile is a dataset where the first two columns are x and y coordinates. If data are distributed on only one dimension (i.e. along a linear transect) one of the columns should contain zeroes.

### Value

a vector containing distances between each pair of samples in the input data

### Author(s)

Kerrie Mengersen, Eric Lamb

### References

Lamb, E. G., K. Mengersen, K. J. Stewart, U. Attanayake, and S. D. Siciliano. 2014. Spatially explicit structural equation modeling. *Ecology* **95**:2434-2442.

### See Also

`make.covar`

### Examples

1 2 3 4 |

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