Enum which describes the trend line types.
| Enumerator |
|---|
| TLT_UNDEFINED |
Undefined trend line.
|
| TLT_LINEAR |
Linear trend line.
|
| TLT_EXPONENTIAL |
Exponential trend line.
|
| TLT_LOGARITHMIC |
Logarithmic trend line.
|
| TLT_POLYNOMIAL |
Polynomial trend line.
|
| TLT_POWER |
Power trend line.
|
