From ca332ab476f645794e26a6f3bf8dae6378d7c320 Mon Sep 17 00:00:00 2001
From: Pascal Bourgault <bourgault.pascal@ouranos.ca>
Date: Tue, 13 Feb 2024 18:18:23 -0500
Subject: [PATCH] Better error message

---
 xclim/indices/stats.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/xclim/indices/stats.py b/xclim/indices/stats.py
index d479fff9d..e08bb12e6 100644
--- a/xclim/indices/stats.py
+++ b/xclim/indices/stats.py
@@ -117,6 +117,11 @@ def fit(
     # Get the distribution
     dist = get_dist(dist)
 
+    if method == "PWM" and not hasattr(dist, "lmom_fit"):
+        raise ValueError(
+            f"The given distribution {dist} does not implement the PWM fitting method. Please pass an instance from the lmoments3 package."
+        )
+
     shape_params = [] if dist.shapes is None else dist.shapes.split(",")
     dist_params = shape_params + ["loc", "scale"]