From eef476492dc8c9550f4b1a91abb70b7653ed995c Mon Sep 17 00:00:00 2001
From: Tony Wu <wu.anthon@northeastern.edu>
Date: Tue, 26 May 2026 21:39:25 -0400
Subject: [PATCH] Add a fallback if IsotopeLabelType is missing from dataset

---
 R/clean_DIANN.R | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/R/clean_DIANN.R b/R/clean_DIANN.R
index 4332ddf..4428a65 100644
--- a/R/clean_DIANN.R
+++ b/R/clean_DIANN.R
@@ -107,6 +107,9 @@ cleanDIANNChunk = function(input, output_path, MBR, quantificationColumn, pos,
         calculateAnomalyScores = calculateAnomalyScores,
         anomalyModelFeatures = anomalyModelFeatures
     )
+    if (!is.element("IsotopeLabelType", colnames(input))) {
+        input <- dplyr::mutate(input, IsotopeLabelType = "L")
+    }
     #input = MSstatsMakeAnnotation(input, annotation)
     .writeChunkToFile(input, output_path, pos)
     NULL