Description Usage Arguments Value Author(s) See Also Examples

Get all sequences of contiguous values in a vector of integers.

1 |

`x` |
A vector of integers, for example, representing
indices. |

A matrix with one row for each sequence, and two columns containing the start and the end of the sequence, respectively.

Chris Jackson <chris.jackson@mrc-bsu.cam.ac.uk>. Thanks to Tobias Verbeke for the suggestion.

1 2 3 4 | ```
seqToIntervals(1:10) # [1 10]
seqToIntervals(c(1:10, 15:18, 20)) # [1 10; 15 18; 20 20]
# vectorised, so efficient for large vectors x
seqToIntervals(sample(1:1000000, size=999990))
``` |

```
from to
1 1 10
from to
1 1 10
2 15 18
3 20 20
from to
1 1 192523
2 192525 222033
3 222035 277498
4 277500 337124
5 337126 399462
6 399464 542494
7 542496 547509
8 547511 752979
9 752981 896413
10 896415 972688
11 972690 1000000
```

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