# bdm::FileDS Class Reference

`#include <libDS.h>`

List of all members.

## Public Member Functions
| FileDS (const string &fname, const string &varname)
void | getdata (vec &dt)
| Returns full vector of observed data=[output, input].
void | getdata (vec &dt, const ivec &indeces)
| Returns data records at indeces.
int | ndat ()
| returns number of data in the file;
void | set_rvs (RV &drv, RV &urv)
void | write (vec &ut)
| Accepts action variable and schedule it for application.
void | write (vec &ut, ivec &indices)
virtual void | write (vec &ut, const ivec &indeces)
| Accepts action variables at specific indeces.
void | step ()
| Moves from to , i.e. perfroms the actions and reads response of the system.
virtual void | log_add (logger &L)
| Register DS for logging into logger L.
virtual void | logit (logger &L)
| Register DS for logging into logger L.
virtual RV | _drv () const
| access function
const RV & | _urv () const
| access function
## Protected Attributes
mat | Data
| internal matrix of data
int | time
| active column in the Data matrix
ivec | rowid
| vector of rows that are presented in Dt
ivec | delays
| vector of delays that are presented in Dt
int | dtsize
int | utsize
RV | Drv
| Description of data returned by `getdata()`.
RV | Urv
| Description of data witten by by `write()`.
int | L_dt
| Remember its own index in Logger L.
int | L_ut

## Detailed Description

Read Data Matrix from an IT file

The documentation for this class was generated from the following file:

- libDS.h