Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision | Last revision Both sides next revision | ||
|
image_expression_type [2020/06/27 16:42] admin |
image_expression_type [2021/08/31 01:12] admin [Image Operators and Functions] |
||
|---|---|---|---|
| Line 76: | Line 76: | ||
| ^ Operator ^ Description ^ Syntax ^ Usage Example ^ | ^ Operator ^ Description ^ Syntax ^ Usage Example ^ | ||
| | Get Image Value | Return the image value at the current cell | IMAGE | i2 | | | Get Image Value | Return the image value at the current cell | IMAGE | i2 | | ||
| - | | Get Image Value At Location | Return the image value on the specified cell coordinate. The cell coordinate is defined by two expressions where the first expression represents the cell line and the second expression represents the cell column. | IMAGE[@@@,@@@] | i1[line@@@–@@@1,@@@column@@@–@@@2] | | + | | Get Image Value At Location | Return the image value on the specified cell coordinate. The cell coordinate is defined by two expressions where the first expression represents the cell line and the second expression represents the cell column. If the cell at that coordinate is null, the value 0 is returned. | IMAGE[@@@,@@@] | i1[line@@@–@@@1,@@@column@@@–@@@2] | |
| | Get Image Null Value | Return the null value of the current image. It is also possible to specify an image whose corresponding null value will be retrieved. \\ The use of null without specifying an image "poisons" the expression evaluation forcing the expression result to be invalid. | null \\ null(IMAGE) | if@@@i1@@@>@@@2@@@then@@@i1@@@else@@@null \\ if@@@null(i2)@@@>@@@2@@@then@@@1@@@else@@@null | | | Get Image Null Value | Return the null value of the current image. It is also possible to specify an image whose corresponding null value will be retrieved. \\ The use of null without specifying an image "poisons" the expression evaluation forcing the expression result to be invalid. | null \\ null(IMAGE) | if@@@i1@@@>@@@2@@@then@@@i1@@@else@@@null \\ if@@@null(i2)@@@>@@@2@@@then@@@1@@@else@@@null | | ||
| | Is Null | Return 1, if the given expression is null, and 0, otherwise. Can also be used to test whether the result of any expression is invalid or not. | isNull(EXPR) | if@@@not@@@isNull(i1)@@@then@@@i1@@@else@@@i2 | | | Is Null | Return 1, if the given expression is null, and 0, otherwise. Can also be used to test whether the result of any expression is invalid or not. | isNull(EXPR) | if@@@not@@@isNull(i1)@@@then@@@i1@@@else@@@i2 | | ||