# dij

From LHD v0.1.0
by Hongzhi Wang

##### Calculate the Inter-site Distance

`dij`

returns the inter-site distance of two design points of a LHD

##### Usage

`dij(X, i, j, q = 1)`

##### Arguments

- X
A Matrix.

- i
A positive integer.

- j
A positive integer.

- q
The default is set to be 1, and it could be either 1 or 2.

##### Details

`X`

stands for the design matrix.`i`

stands for the i^th row of`X`

.`j`

stands for the j^th row of`X`

.Both

`i`

and`j`

should be in [1,nrow(X)] and they should not be equal to each other.If

`q`

is 1 (the default setting),`dij`

is the rectangular distance. If`q`

is 2,`dij`

is the Euclidean distance.

##### Value

If all inputs are logical, then the output will be a positive number indicating the distance.

##### Examples

```
# NOT RUN {
#create a toy LHD with 5 rows and 3 columns
toy=rLHD(n=5,k=3);toy
#Calculate the inter-site distance of the 2nd and the 4th row of toy (with default q)
dij(X=toy,i=2,j=4)
#Calculate the inter-site distance of the 2nd and the 4th row of toy (with q=2)
dij(X=toy,i=2,j=4,q=2)
# }
```

*Documentation reproduced from package LHD, version 0.1.0, License: MIT + file LICENSE*

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