fix and test orig_land_use with explicit chunking

activitysim/abm/models/accessibility.py

@@ -277,11 +277,12 @@ def compute_accessibility(
     ) in chunk.adaptive_chunked_choosers(
         state, accessibility_df, trace_label, explicit_chunk_size=explicit_chunk_size
     ):
+        orig_land_use_df_chunk = orig_land_use_df.loc[chooser_chunk.index]
         accessibilities = compute_accessibilities_for_zones(
             state,
             chooser_chunk,
             land_use_df,
-            orig_land_use_df,
+            orig_land_use_df_chunk,
             assignment_spec,
             constants,
             network_los,

activitysim/abm/test/test_agg_accessibility.py

@@ -61,3 +61,48 @@ def test_agg_accessibility_explicit_chunking(state, dataframe_regression):
     )
     df = state.get_dataframe("accessibility")
     dataframe_regression.check(df, basename="simple_agg_accessibility")
+
+
+@pytest.mark.parametrize("explicit_chunk", [0, 5])
+def test_agg_accessibility_orig_land_use(
+    state, dataframe_regression, tmp_path, explicit_chunk
+):
+    # set top level settings
+    state.settings.chunk_size = 0
+    state.settings.sharrow = False
+    state.settings.chunk_training_mode = "explicit"
+
+    # read the accessibility settings and override the explicit chunk size to 5
+    model_settings = AccessibilitySettings.read_settings_file(
+        state.filesystem, "accessibility.yaml"
+    )
+    model_settings.explicit_chunk = explicit_chunk
+    model_settings.land_use_columns = ["RETEMPN", "TOTEMP", "TOTACRE"]
+    model_settings.land_use_columns_orig = ["TOTACRE"]
+
+    land_use = state.get_dataframe("land_use")
+    accessibility = state.get_dataframe("accessibility")
+
+    tmp_spec = tmp_path / "tmp-accessibility.csv"
+    tmp_spec.open("w").write(
+        """Description,Target,Expression
+orig_acreage,orig_acreage,df.landuse_orig_TOTACRE
+dest_acreage,dest_acreage,df.TOTACRE
+"""
+    )
+    model_settings.SPEC = str(tmp_spec)
+
+    # state.filesystem.get_config_file_path(model_settings.SPEC)
+
+    compute_accessibility(
+        state,
+        land_use,
+        accessibility,
+        state.get("network_los"),
+        model_settings,
+        model_settings_file_name="accessibility.yaml",
+        trace_label="compute_accessibility",
+        output_table_name="accessibility",
+    )
+    df = state.get_dataframe("accessibility")
+    dataframe_regression.check(df, basename="simple_agg_accessibility_orig_land_use")