Polynomial
Use the Database Tools > Filters > Polynomial menu option (TREND GX), to calculate an n'th order trend of a data channel by (least square) best-fit polynomial. The trend is then evaluated and placed in a new channel. An optional residual channel (input - trend) may also be created.
The option is also available with the following extensions and menus:
- Moving Platform Gravity > 1D Filters > Polynomial
- Tie Line Levelling > Levelling Utilities > Trend
Polynomial dialog options
|
Channel to trend |
Input channel to trend Script Parameter: TREND.IN |
|
Output trend channel |
Output trend channel. If not specified, only a residual channel is created. Script Parameter: TREND.OUT |
|
Output residual channel |
Output residual channel (input - trend). If not specified, only a trend channel is created. Script Parameter: TREND.RES |
|
Trend order (0 – 9) |
Order of the polynomial >=0 and <=9 Script Parameter: TREND.ORDER |
Application Notes
A trend output channel (OUT) and /or a residual channel (RES) must be specified.
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