## GSLIB Help Page: DRAW

Description:

- The `draw` program, documented below, reads as input a Kvariate probability density function, computes the corresponding Kvariate cdf and draws a user specified number L samples from that distribution. The input probability density function could be the equal weighted data distribution, the declustered distribution, a smoothed version of the data distribution (e.g., the output of `histsmth` or `scatsmth`) or any user-specified distribution.

Parameters:

- datafl: a data file in simplified Geo-EAS format containing the Kvariate distribution.
- nvar: the number of variables (K making up the distribution being drawn from.
- icolvr(1,..,nvar): the column numbers for the nvar variables of interest
- icolwt: the column number for the probability values (if icolwt0 then the samples will be equal weighted).
- tmin and tmax: all values strictly less than tmin and strictly greater than tmax are ignored.
- seed and num: the random number seed (a large odd integer) and the number L=num of simulated values to draw.
- outfl: the output file containing the simulated values