# Points

From DoSPT

The `points`

keyword is a **required** keyword in the `input`

file. It takes 1 argument, the number of MD snapshots to be read from the trajectory file.

`points`

needs to be consistent with `tau`

, in such a way that the time step is given by `tau`

/`points`

. Note that `points`

can be smaller or equal to the total number of snapshots in the trajectory file. If it is smaller, the first `points`

snapshots will be read in, and the rest will be ignored. This is useful for testing purposes, where one can quickly read and analyze only part of the trajectory file. Note that you still need to adjust `tau`

so that the time step remains correct.

### Summary

Required/optional | Type | Accepted values | Default | See also |
---|---|---|---|---|

Required | Integer | Any positive integer | n/a | Input file, trajectory file |

### Example

points = 20000