save metric

maud/cli.py

@@ -16,6 +16,7 @@
 
 """Functions that are exposed to the command line interface live here."""
 
+import json
 import os
 import shutil
 from datetime import datetime
@@ -102,6 +103,10 @@ def do_sample(data_path, output_dir):
     stanfit = sample(mi, samples_path)
     print(stanfit.diagnose())
     print(stanfit.summary())
+    metric = stanfit.metric
+    if metric is not None:
+        with open(os.path.join(samples_path, "metric.json"), "w") as f:
+            json.dump(metric.tolist(), f)
     idata = get_idata(stanfit.runset.csv_files, mi, "train")
     idata.to_json(os.path.join(output_path, "idata.json"))
     return output_path