GRTON Process

To access this process:…

See this process in the Command Table.

Process Overview

Calculate grades and tonnages using results from a Gaussian anamorphosis.

Note: The process GAUSAN must have been run previously to create a file of the polynomial coefficients.

Input Files

Name

Description

I/O Status

Required

Type

POLYNO

Input file containing polynomial coefficients. This file is created as output by process GAUSAN. The following fields are required:

  • POLYINDX - polynomial index number [0,1,2,..]

  • COEFF - the polynomial coefficient.

  • POLYNUM - the number of polynomials used in the transformation.

Input

Yes

Undefined

Output Files

Name

I/O Status

Required

Type

Description

QTN

Output

Yes

Undefined

Compulsory output file containing grade and tonnage values for different cut-offs. Change of support calculations are NOT used. It includes the following explicit fields:

  • CUTOFF - actual cut-off grade

  • ANAMOR - gaussian anamorphose

  • TONABOVE - ratio of tons mined above cut-off

  • METABOVE - ratio of metal recovered above cut-off

  • GRDABOVE - average grade above cut-off

  • TONBELOW - ratio of tons mined below cut-off

It also includes the following implicit field:

  • CHSUPP - change of support variable. This is always set to 1.

QTR

Output

No

Undefined

Optional output file containing grade and tonnage values for different cut-offs. Change of support calculations are used. It includes the following explicit fields:

  • CUTOFF - actual cut-off grade

  • ANAMOR - gaussian anamorphose

  • TONABOVE - ratio of tons mined above cut-off

  • METABOVE - ratio of metal recovered above cut-off

  • GRDABOVE - average grade above cut-off

  • TONBELOW - ratio of tons mined below cut-off It also includes the following implicit fields.

  • CHSUPP - change of support variable.

  • BLOCKVAR - block variance, as defined by parameter BLOCKVAR.

Parameters

Name

Description

Required

Default

Range

Values

SUPPORT

Change of support flag:

Option

Description

0

Support change calculations not used

1

Support change calculations used The default value is (0).

No

0

0,1

0,1

BLOCKVAR

The block variance. This parameter is compulsory if a change of support is required; ie if SUPPORT=1.

No

Undefined

Undefined

Undefined

MAXITER

Maximum number of iterations. The default value is (100).

No

100

Undefined

Undefined

PRINT

Controls the amount of text displayed: The default value is (0).

Option

Description

0

Minimum output to screen

1

As 0 + grade/tonnage results

2

As 1 + display for each iteration

No

0

0,2

0,1,2

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