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--- visual3d:documentation:pipeline:expressions:signal_functions [2024/11/15 19:27] – [Point_Tracked_By_3Points] wikisysop
+++ visual3d:documentation:pipeline:expressions:signal_functions [2025/05/15 16:37] (current) – Added link to new function File_Tag_Exists. wikisysop
@@ Line 5: / Line 5: @@
 ==== Data_Exists ====
-Data_Exists(a) returns 1 if the signal exists.
+**Data_Exists(a)** - returns 1 if the signal exists. This behaviour is similar to the function [[visual3d:documentation:pipeline:expressions:workspace_functions#file_tag_exists|File_Tag_Exists]].
 Example, compute "something" only if the event label RON exists.