From 4ea51e4e65ba1a333c8266f46d1e66de871fa204 Mon Sep 17 00:00:00 2001
From: Robrecht Cannoodt <rcannood@gmail.com>
Date: Tue, 19 Sep 2023 06:20:18 +0200
Subject: [PATCH] also check whether ordered is null or not

---
 R/read_h5ad_helpers.R | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/R/read_h5ad_helpers.R b/R/read_h5ad_helpers.R
index d27647e9..d1151363 100644
--- a/R/read_h5ad_helpers.R
+++ b/R/read_h5ad_helpers.R
@@ -297,7 +297,7 @@ read_h5ad_categorical <- function(file, name, version = "0.2.0") {
 
   attributes <- rhdf5::h5readAttributes(file, name)
   ordered <- attributes[["ordered"]]
-  if (is.na(ordered)) {
+  if (is.null(ordered) || is.na(ordered)) {
     # This version of {rhdf5} doesn't yet support ENUM type attributes so we
     # can't tell if the categorical should be ordered,
     # see https://github.com/grimbough/rhdf5/issues/125