From 1f12c5b29669feecd2d89a4699e2024f7da59ebc Mon Sep 17 00:00:00 2001
From: PauBadiaM <pau.badia@uni-heidelberg.de>
Date: Thu, 8 Aug 2024 15:14:05 +0200
Subject: [PATCH] Fixed gsva bug with dense

---
 decoupler/method_gsva.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/decoupler/method_gsva.py b/decoupler/method_gsva.py
index 32570ce..04455f6 100644
--- a/decoupler/method_gsva.py
+++ b/decoupler/method_gsva.py
@@ -291,9 +291,10 @@ def run_gsva(mat, net, source='source', target='target', kcdf='gaussian', mx_dif
     # Remove repeated features
     if issparse(m):
         m = m.toarray()
-    msk = ~np.all(m == m[0, :], axis=0)
-    m = m[:, msk]
-    c = c[msk]
+    if m.shape[0] > 1:
+        msk = ~np.all(m == m[0, :], axis=0)
+        m = m[:, msk]
+        c = c[msk]
 
     # Transform net
     net = rename_net(net, source=source, target=target, weight=None)