Process Help

NSMODBAK - back-transform data from a normal distribution.

 

Process Name

Menu Path

Link to Command Table

NSMODBAK

Command line only

Click here

Introduction

The process back transforms one or more variogram models that have been fitted to experimental variogram created from normal-score transformed samples.

The &IN file is a variogram model file containing at least one model. If a TRANS field exists, only models with a value of 1 will be converted. &SAMPLES is also required, which is the output from the variogram creation process and will contain grade fields matching those found in the *GRADE field of the input &IN file.

The output is a model variogram file containing back-transformed variogram models.

This process is triggered during Advanced Estimation, specifically from the Save Models tab.

 


Files, Fields and Parameters

Input Files

Name

Description

I/O Status

Required

Type

IN

Input model variogram file.  This should contain a GRADE field containing the name of the grade it relates to.  If this contains the TRANS field, it will only convert variograms where TRANS=1.

Input

Yes

Variogram Model

SAMPLES

Input sample data file. This should be the file which was transformed as part of the original variogram creation. It should contain grade fields matching the names in GRADE in the input model file IN

Input

Yes

Table

Output Files

Name

I/O Status

Required

Type

Description

OUT

Output

Yes

Variogram Model

Output model variogram file which will contain the back-transformed variogram models. Back-transformed variograms will have TRANS=-1

Fields

Name

Description

Source

Required

Type

Default

X/Y/ZPT

Coordinate fields in the input SAMPLES file

IN

Yes

Numeric

Undefined

 

Parameters

Name

Description

Required

Default

Type

Values

VSETNUM

Variogram model set number to be assigned to &OUT file.

No

1

Undefined

Undefined


Command Window Output (example)

!NSMODBAK    &IN(vmodel_4),  &OUT(vmodel_4_BT),  &SAMPLES(isaacs),

                        *XPT(XPT), *YPT(YPT), *ZPT(ZPT),

                        @VSETNUM=2.0