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Process Help NSMODBAK - back-transform data from a normal distribution. |
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Process Name |
Menu Path |
Link to Command Table |
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NSMODBAK |
Command line only |
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 |
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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 |
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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 |
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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
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Name |
Description |
Source |
Required |
Type |
Default |
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X/Y/ZPT |
Coordinate fields in the input SAMPLES file |
IN |
Yes |
Numeric |
Undefined |
Parameters
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Name |
Description |
Required |
Default |
Type |
Values |
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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
