Differences
This shows you the differences between two versions of the page.
Next revision | Previous revision | ||
calculate_lookup_table [2011/07/26 19:09] hermann created |
calculate_lookup_table [2011/11/30 20:36] (current) hermann [Notes] |
||
---|---|---|---|
Line 21: | Line 21: | ||
===== Notes ===== | ===== Notes ===== | ||
- | If the calculation of the expression diverges, the corresponding table key is not inserted in the output table. | + | The table defined using the identifier 1, i.e. the table corresponding to "t1" in the calculation, is used to define the format of the resulting table. |
- | The list of mathematical and logical operators that can be employed in the logic/algebraic expression can be found in the [[Image Expression Type | image expression reference]]. | + | If the calculation of the expression diverges, the corresponding table key is not inserted in the output table. So, when possible way to remove a key from a table is returning //null//. |
+ | |||
+ | The list of mathematical and logical operators that can be employed in the logic/algebraic expression can be found in the [[Image Expression Type | image expression reference]]. Note that the operators and functions described in [[Image Expression Type#Image Operators and Functions | Image Operators and Functions]] and [[Image Expression Type#Image Neighborhood Functions | ||
+ | | Image Neighborhood Functions]] can not be used in lookup table calculations. | ||
The tables used by the "Calculate Lookup Table" must be provided by a corresponding [[Number Table]] and the values must be provided by a corresponding [[Number Value]]. | The tables used by the "Calculate Lookup Table" must be provided by a corresponding [[Number Table]] and the values must be provided by a corresponding [[Number Value]]. | ||
+ | |||
===== Internal Name ===== | ===== Internal Name ===== |