This "How-to" guide descibes how to edit user defined boundaries on example of appraiser which is included in release Oxygen ....
This is sample of boundaries applying as additional limitation to GIA Facetware:
Parameter name | Minimum Value | Maximum Value |
---|---|---|
Average Table % | 55 | 58 |
Average Crown Angle in degree | 33 | 35 |
Average pavilion angle in degree | 40.6 | 41.0 |
Average star Length % | 45 | 50 |
Average Lower Length % | 75 | 80 |
Average Girdle thickness bezel | 2.8 | 3.8 |
Average Crown Height % | 12.7 | 14.0 |
Girdle Description | THIN | MED |
Culet size | 0.0 | 0.5 |
Average Crown painting/Digging | -2.5 | 2.5 |
Average Pavilion Painting/Digging | -2.5 | 2.5 |
Sum of painting/digging | -3 | 4 |
Appraiser which is corresponds to this table is called My GIA 4/ GIA Facetware.M4.
It includes optimization part My GIA 4 which user can find by starting strings
It includes apprising part GIA Facetware.M4 which user can find by starting strings
These 2 parts are editable inside file MyGIA.txt placed in folder Facetware in root folder of program.
Step-by-step guide
1. How to change interval for existed in appraiser parameter.
For example, user needs to change interval for Crown Angle for VG group to 30...36. It is necessary to
Open MyGIA.txt in Notepad and find apprising part GIA Facetware.M4:
Find section with "intervals" - it contains intervals for different parameters for different cut quality groups. Here user can edit intervals for EX, VG and other cut quality groups.
Edit string:
Before:
After:
Find optimization part My GIA 4:
- Find parameter DC_CrownAngle_Table - it is Crown Angle. In section Mass: and following table there are optimizartion intervals for parameters mentioned in Parameters: section. Each string corresponds to each cut quality group. All groupd are metnions in Quality: section.
- So we find second string for VG group and change 3rd and 4th values (they are correspond to Crown angle range) to 29.95 and 36.05 (we have to make 0.05 gap for optimization values in comparison with apprising values - it helps find better solutions during optimization):
Before:
After:
2. How to add parameter and its interval to appraiser.
For example, user needs to add Total Heigth parameter with range 58...62.5 to EX group. It is necessary to
Open MyGIA.txt in Notepad and find apprising part GIA Facetware.M4:
Find section with "value" and add parameter DC_TotalHeight:
Find section with "intervals" and add interval for EX group 58...62.5 like this:
Find section grading : Restrictions and add Restriction_TotalHeight there:
That is all. There is no need to add parameter TotalHeight in optimization part My GIA 4 because there are other parameters which form total height of stone and they are optimized.