Differences

This shows you the differences between two versions of the page.

--- image_expression_type [2019/03/27 16:48]
francisco [General Operators]
+++ image_expression_type [2020/06/27 16:34]
admin [Table Operators]
@@ Line 86: / Line 86: @@
 Lookup table operators return the value corresponding to a given key according to a rule-operator.
-They have the following syntax: \\ @@@@@@@@@TABLE[N@@@] \\ where: \\ @@@@@@@@@TABLE is a table identifier corresponding to a **[[Lookup Table Type|lookup table]]**. //Beware that, if the identifier corresponds to a [[Table Type|table]], an error will be reported//; \\ @@@@@@@@@N is the rule-operator.
+They have the following syntax: \\ @@@@@@@@@TABLE[N@@@] \\ where: \\ @@@@@@@@@TABLE is a table identifier corresponding to a **[[Lookup Table Type|lookup table]]**. //Beware that, if the identifier is bound to a [[Table Type|table]], an error will be reported//; \\ @@@@@@@@@N is the rule-operator.
 ^ Operator ^ Description ^ Syntax ^ Usage Example ^
-| Get Table Value | Return the table value in the X key position of the table | TABLE[EXPR] | t2[i1@@@+@@@2] |
+| Get Table Value | Return the table value associated to the EXPR key in the table | TABLE[EXPR] | t2[i1@@@+@@@2] |
-| Get Table Equal Lower Bound Value | Return the table value in the greater key less than or equal to the X key position of the table. | TABLE[<nowiki><=</nowiki>@@@EXPR] \\ <del>TABLE{EXPR}</del> | t2[<nowiki><=</nowiki>@@@14] \\ <del>t2{14}</del> |
+| Get Table Equal Lower Bound Value | Return the table value associated to the greater key less than or equal to the EXPR key in the table. | TABLE[<nowiki><=</nowiki>@@@EXPR] \\ <del>TABLE{EXPR}</del> | t2[<nowiki><=</nowiki>@@@14] \\ <del>t2{14}</del> |
-| Get Table Lower Bound Value | Return the table value in the greater key less than the X key position of the table. | TABLE[<@@@EXPR] | t2[<@@@i1@@@+@@@2] |
+| Get Table Lower Bound Value | Return the table value associated to the greater key less than the EXPR key in the table. | TABLE[<@@@EXPR] | t2[<@@@i1@@@+@@@2] |
-| Get Table Equal Upper Bound Value | Return the table value in the lesser key greater than or equal to the X key position of the table. | TABLE[>=@@@EXPR] | t2[>=@@@i1@@@+@@@i3] |
+| Get Table Equal Upper Bound Value | Return the table value associated to the lesser key greater than or equal to the EXPR key in the table. | TABLE[>=@@@EXPR] | t2[>=@@@i1@@@+@@@i3] |
-| Get Table Upper Bound Value | Return the table value in the lesser key greater than the X key position of the table. | TABLE[>@@@EXPR] | t2[>@@@i7] |
+| Get Table Upper Bound Value | Return the table value associated to lesser key greater than the EXPR key in the table. | TABLE[>@@@EXPR] | t2[>@@@i7] |
-| Get Table Closest Value | Return the table value in the key closest to the X key position of the table. | TABLE[><@@@EXPR] | t2[><@@@3@@@+@@@i7] |
+| Get Table Closest Value | Return the table value associated to the key closest to the EXPR key in the table. | TABLE[><@@@EXPR] | t2[><@@@3@@@+@@@i7] |
-| Get Table Interpoled Value | Return a linear interpoled value drawn through the neighbor keys of the X key position of the table. | TABLE[/@@@EXPR] | t2[/@@@i2] |
+| Get Table Interpolaled Value | Return a linear interpolated value drawn through the neighbor keys of the EXPR key in the table. | TABLE[/@@@EXPR] | t2[/@@@i2] |
 | Test Table Key | Return 1, if expression corresponds to a key stored in the table, and 0, otherwise. | TABLE[?@@@EXPR] \\ TABLE[=?@@@EXPR] \\ TABLE[==?@@@EXPR] | t2[?@@@i2] \\ t2[=?@@@i2] |
 | Get Table Value Using Predefined Name | Return the table value bound to a key corresponding to a predefined name. //This can only used to retrieve results produced by [[Extract Map Attributes]] e [[Extract Lookup Table Attributes]]. The documentation of these operators provides a list of all supported predefined names.// | TABLE["NAME"] | t2["cellArea"] |
@@ Line 103: / Line 103: @@
 Table operators return the value corresponding to a given set of keys.
-They have the following syntax: \\ @@@@@@@@@TABLE[@@@[@@@]@@@[@@@]@@@] \\ where: \\ @@@@@@@@@TABLE is a table identifier corresponding to a **[[Table Type|table]]**. //Beware that, if the identifier corresponds to a [[Lookup Table Type|lookup table]], an error will be reported//;
+They have the following syntax: \\ @@@@@@@@@TABLE[@@@[@@@]@@@[@@@]@@@] \\ where: \\ @@@@@@@@@TABLE is a table identifier corresponding to a **[[Table Type|table]]**. //Beware that, if the identifier is bound to a [[Lookup Table Type|lookup table]], an error will be reported//;
 The expressions representing the set of keys must be separated by commas.
 ^ Operator ^ Description ^ Syntax ^ Usage Example ^
-| Get Table Value At Default Column | Return the table value corresponding to the set of keys at the first data column. | TABLE[@@@[EXPR,@@@EXPR,@@@EXPR,@@@...@@@]@@@] | t2[@@@[i1@@@+@@@2,@@@i2/2,@@@t1[v2]]@@@] |
+| Get Table Value At Default Column | Return the table value associated to the set of keys in the first data column. | TABLE[@@@[EXPR,@@@EXPR,@@@EXPR,@@@...@@@]@@@] | t2[@@@[i1@@@+@@@2,@@@i2/2,@@@t1[v2]]@@@] |
-| Get Table Value At Named Column | Return the table value corresponding to the set of keys at the column named by the given name. | TABLE[@@@[EXPR,@@@EXPR,@@@EXPR,@@@...@@@]@@@[@@@NAME@@@]@@@] | t2[@@@[i1@@@+@@@2,@@@i2/2,@@@t1[v2]]@@@[@@@"Area_In_Hectares"@@@]@@@] |
+| Get Table Value At Named Column | Return the table value associated to the set of keys in the column named by the given name. | TABLE[@@@[EXPR,@@@EXPR,@@@EXPR,@@@...@@@]@@@[@@@NAME@@@]@@@] | t2[@@@[i1@@@+@@@2,@@@i2/2,@@@t1[v2]]@@@[@@@"Area_In_Hectares"@@@]@@@] |
-| Get Table Value At Column Index | Return the table value corresponding to the set of keys at the column indexed by the given expression. | TABLE[@@@[EXPR,@@@EXPR,@@@EXPR,@@@...@@@]@@@[@@@EXPR@@@]@@@] | t2[@@@[i1@@@+@@@2,@@@i2/2,@@@t1[v2]]@@@[@@@v1+2@@@]@@@] |
+| Get Table Value At Column Index | Return the table value associated  to the set of keys in the column indexed by the given expression. | TABLE[@@@[EXPR,@@@EXPR,@@@EXPR,@@@...@@@]@@@[@@@EXPR@@@]@@@] | t2[@@@[i1@@@+@@@2,@@@i2/2,@@@t1[v2]]@@@[@@@v1+2@@@]@@@] |
 ==== Image Neighborhood Functions ====