From d3a9decebe603fdd6655c0cb8edbf1a8b2dc52fa Mon Sep 17 00:00:00 2001
From: d4straub <daniel.straub@uni-tuebingen.de>
Date: Mon, 17 Jun 2024 12:23:19 +0200
Subject: [PATCH] create barplot without metadata

---
 CHANGELOG.md          | 2 ++
 workflows/ampliseq.nf | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 24c37bbb..7e692cc9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### `Changed`
 
+- [#749](https://github.com/nf-core/ampliseq/pull/749) - Create barplot also when no metadata is given
+
 ### `Fixed`
 
 - [#747](https://github.com/nf-core/ampliseq/pull/747) - Template update for nf-core/tools version 2.14.1
diff --git a/workflows/ampliseq.nf b/workflows/ampliseq.nf
index 2a85f28b..d3514d54 100644
--- a/workflows/ampliseq.nf
+++ b/workflows/ampliseq.nf
@@ -772,7 +772,7 @@ workflow AMPLISEQ {
         }
 
         if (!params.skip_barplot) {
-            QIIME2_BARPLOT ( ch_metadata, ch_asv, ch_tax, '' )
+            QIIME2_BARPLOT ( ch_metadata.ifEmpty([]), ch_asv, ch_tax, '' )
             ch_versions = ch_versions.mix( QIIME2_BARPLOT.out.versions )
         }