From 6c219d40f6bab52b7a6feabb086acb53ee1007e2 Mon Sep 17 00:00:00 2001
From: "Kevin R. Thornton" <krthornt@uci.edu>
Date: Fri, 3 Apr 2026 14:28:06 -0700
Subject: [PATCH] feat: ergonomic access to site table position column

---
 src/site_table.rs    | 4 ++++
 tests/test_tables.rs | 8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/src/site_table.rs b/src/site_table.rs
index 30dfb2eef..abaa79c61 100644
--- a/src/site_table.rs
+++ b/src/site_table.rs
@@ -297,6 +297,10 @@ impl SiteTable {
         /// Get the position column as a slice
         => position, position_slice_raw, f64);
 
+    pub fn position_column(&self) -> impl crate::TableColumn<SiteId, Position> + '_ {
+        crate::table_column::OpaqueTableColumn(self.position_slice())
+    }
+
     /// Clear all data from the table
     pub fn clear(&mut self) -> Result<i32, TskitError> {
         handle_tsk_return_value!(self.table_.clear())
diff --git a/tests/test_tables.rs b/tests/test_tables.rs
index da773e2c1..1f51a8e3a 100644
--- a/tests/test_tables.rs
+++ b/tests/test_tables.rs
@@ -622,3 +622,11 @@ fn test_edge_table_column_access() {
         assert_eq!(column[edge], tskit::NodeId::from(0));
     }
 }
+
+#[test]
+fn test_site_table_column_access() {
+    let mut table = tskit::SiteTable::default();
+    let site = table.add_row(1.0, None).unwrap();
+    let col = table.position_column();
+    assert_eq!(col[site], 1.0);
+}