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--- tutorials:xl-queries-and-operators [2024/12/07 16:12] – [Test model] ksmolen
+++ tutorials:xl-queries-and-operators [2025/01/10 11:17] (current) – gaetan
@@ Line 60: / Line 60: @@
 }
 </code>
+The underlying 2d graph of the generated structure given below:
+{{ :tutorials:graph_query_example_2.png?620|}}
+Beginning from //RGGRoot//, we have the sequence of three //Internodes// where to each is a //Leaf// linked by a branching edge. The last internode, additionally, has a Bud node successor.
 ==== Query examples ====
@@ Line 72: / Line 79: @@
 (* Internode *)
 </code>
+The query will return ids of all the internodes in the plant structure.
 <hidden answer>
+Model.Internode[id=1911]@ecc95fb
+Model.Internode[id=1906]@7b431a06
+Model.Internode[id=1901]@5753e950
+__Note:__
-</hidden>
+Internode with the id=1901 is the first internode from the bottom (with the highest age: 3).
-The query will return ids of all the internodes in the plant structure.
+Internode with the id=1911 is the top internode (with the lowest age: 1)
+</hidden>
 Notice, that when you click with a mouse on an internode in the 3D View window, information about the selected internode will be displayed in the Attribute Editor. In the Attribute Editor, you can check the internode id (e.g. Model$Internode [Internode.1756]) and compare it with the one that was printed in the XL Console. Another option is to look at the node ids in the 2D Graph (Panels -> 2D -> Graph, in the graph window: View -> Redraw).
@@ Line 89: / Line 103: @@
 (* i:Internode, (i[age] == 1) *)
 </code>
+<hidden answer>
+Model.Internode[id=1911]@ecc95fb
+</hidden>
   * Find the internode below the bud:
@@ Line 99: / Line 117: @@
 ''<'' represents a successor edge in the indicated direction
+<hidden answer>
+Model.Internode[id=1911]@ecc95fb
+</hidden>
   * Find all leaves connected to an internode:
@@ Line 107: / Line 129: @@
 This is just to illustrate how to define different edge types inside a query. ''+>'' represents a branch edge.
+<hidden answer>
+Model.Leaf[id=1913]@4b0f7bd
+Model.Leaf[id=1908]@1c6dbfa5
+Model.Leaf[id=1903]@668c1f97
+__Note:__
+Leaf with the id=1903 is the first (and the oldest) leaf, leaf with the id=1913 is the last (and the yongest) leaf.
+</hidden>
 ==== Aggregators ====
@@ Line 112: / Line 145: @@
 Aggregate operations are used to collect multiple values when traversing the graph structure and return a single value.
-Standard [[groimp-platform:xl-operators|aggregate operations]] are: ''count'', ''sum'', ''empty'', ''exist'', ''forall'', ''first'', ''last'', ''max'', ''min'', ''mean'', ''selectRandomly'', ''selectWhereMin'', ''selectWhereMax'', ...
+Standard [[:groimp-platform:xl-builtin-methods|aggregate operations]] are: ''count'', ''sum'', ''empty'', ''exist'', ''forall'', ''first'', ''last'', ''max'', ''min'', ''mean'', ''selectRandomly'', ''selectWhereMin'', ''selectWhereMax'', ...
   * Count all leaves:
@@ Line 119: / Line 152: @@
 count((* Leaf *))
 </code>
+<hidden answer>
+</hidden>
   * Sum up the area of all leaves:
@@ Line 125: / Line 163: @@
 sum((* Leaf *)[area])
 </code>
+<hidden answer>
+.0
+</hidden>
   * Sum up the length of internodes:
@@ Line 131: / Line 174: @@
 sum((* Internode *)[length])
 </code>
+<hidden answer>
+.0
+</hidden>
 In this particular example with internodes forming (only) the main stem, the query will return stem length.
@@ Line 139: / Line 186: @@
 selectWhereMax((* l:Leaf *), (l[area]))
 </code>
+<hidden answer>
+Model.Leaf[id=1903]@668c1f97
+</hidden>
   * Count internodes that are older than 2 (time units):
@@ Line 145: / Line 197: @@
 count((* i:Internode, (i[age] >= 2) *))
 </code>
+<hidden answer>
+</hidden>