From a0ce616c7daae7b476f07b8c069a526f92dbf79a Mon Sep 17 00:00:00 2001
From: Frederick Muriuki Muriithi
Date: Mon, 12 Sep 2022 07:28:24 +0300
Subject: Check there is target data before running correlations

---
 wqflask/wqflask/correlation/rust_correlation.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/wqflask/wqflask/correlation/rust_correlation.py b/wqflask/wqflask/correlation/rust_correlation.py
index 8e8cd463..5b39c871 100644
--- a/wqflask/wqflask/correlation/rust_correlation.py
+++ b/wqflask/wqflask/correlation/rust_correlation.py
@@ -247,6 +247,9 @@ def __compute_sample_corr__(
         r = ",".join(lts)
         target_data.append(r)
 
+    if len(target_data) == 0:
+        return  {}
+
     return run_correlation(
         target_data, list(sample_data.values()), method, ",", corr_type,
         n_top)
-- 
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