Interpolation
- Last UpdatedNov 25, 2021
- 1 minute read
Specifies the interpolation type for data retrieval. When used with the wwHistory2 or wwWideHistory2 functions, valid values are:
|
Value |
Description |
|---|---|
|
0 |
Use stair-step interpolation. |
|
1 |
Use linear interpolation. |
|
254 |
Use the tag’s interpolation setting specified at the AVEVA Historian level. |
For more information on each option, see Interpolation Type (wwInterpolationType).
When used with other functions, valid values are:
TRUE = Linear interpolation is performed between stored values. Interpolation is only an option for history functions that use cyclic retrieval for analog tag values and where no criteria is specified. If these conditions are not satisfied, interpolation is not performed.
FALSE = Interpolation not performed.