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Process Help NSTRANS - transform data to a normal distribution |
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Process Name |
Menu Path |
Link to Command Table |
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NSTRANS |
Command line only |
Introduction
This process transforms a set of data to a normal distribution.
This process is run as part of Advanced Estimation if the Transform | Normal Score option is selected on the Create Variograms panel.
The input to this process is a sample data file containing at least one grade field to be transformed. It may also include a declustering weight field (*DCWGT). The file does not need XYZ coordinate data in order to do the transform. However coordinates will be required if variograms are to be calculated for the transformed data.
The process creates an output file containing transformed points. This will contain the same data as the input file, but with an extra transformed data field (*NSGRADE).
You can also restrict the scope of transformation by setting a minimum (@MINGRADE) and/or maximum (@MAXGRADE) grade value to transform.
This process supports retrieval criteria.
Files, Fields and Parameters
Input Files
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Name |
Description |
I/O Status |
Required |
Type |
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IN |
Input sample data file. This must include the grade field GRADE and may also include the declustering weight field DCWGT . |
Input |
Yes |
Samples file |
Output Files
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Name |
I/O Status |
Required |
Type |
Description |
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Out |
Output file containing transformed points.This contains the same data as the IN file, but with the added transformed data field NSGRADE. |
Output |
Yes |
Samples file |
Fields
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Name |
Description |
Source |
Required |
Type |
Default |
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GRADE |
Field in the input sample file IN defining the grade to be transformed. |
IN |
Yes |
Numeric |
Undefined |
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DCWGT |
Optional declustering weights field in the IN file. |
IN |
No |
Numeric |
Undefined |
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NSGRADE |
Field in the output file OUT containing the transformed grade.(This may be the same as GRADE, in which case it overwrites the original value) |
- |
No |
Alphanumeric |
Undefined |
Parameters
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Name |
Description |
Required |
Default |
Range |
Values |
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MINGRADE |
Minimum GRADE value input from the IN sample file. |
No |
0 |
Undefined |
Undefined |
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MAXGRADE |
Maximum GRADE value input from the IN sample file. |
No |
Undefined |
Undefined |
Undefined |
Notes
No additional notes.
Example
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!NSTRANS
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&IN(dcisaacs),&OUT(nscore1), *GRADE(V), *NSGRADE(TRANS), @MINGRADE=0.0,@MAXGRADE=1700.0 |
