From e56ef334f4748bfff518324ce415711b09ff2980 Mon Sep 17 00:00:00 2001
From: "w.pomp" <w.pomp@nki.nl>
Date: Thu, 26 Mar 2026 16:52:18 +0100
Subject: [PATCH] - add support for tiled czi's: bugfix

---
 ndbioimage/readers/cziread.py | 8 +++++---
 pyproject.toml                | 2 +-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/ndbioimage/readers/cziread.py b/ndbioimage/readers/cziread.py
index 962a735..d349ea2 100644
--- a/ndbioimage/readers/cziread.py
+++ b/ndbioimage/readers/cziread.py
@@ -190,9 +190,11 @@ class Reader(AbstractReader, ABC):
             y = np.unique(y)
             _, bx = np.histogram(x, self.tiles[0])
             _, by = np.histogram(y, self.tiles[1])
-            by, bx = list(product([(i, j) for i, j in zip(by, by[1:])], [(i, j) for i, j in zip(bx, bx[1:])]))[
-                self.series
-            ]
+            b = list(product([(i, j) for i, j in zip(by, by[1:])], [(i, j) for i, j in zip(bx, bx[1:])]))
+            if self.series < len(b):
+                by, bx = b[self.series]
+            else:
+                raise FileNotFoundError(self.path / f"Pos{self.series}")
             for directory_entry in self.reader.filtered_subblock_directory:
                 idx = self.get_index(directory_entry, self.reader.start)
                 if bx[0] <= idx[xi][0] <= bx[1] and by[0] <= idx[yi][0] <= by[1]:
diff --git a/pyproject.toml b/pyproject.toml
index 9c6a005..ff08820 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "ndbioimage"
-version = "2026.3.3"
+version = "2026.3.4"
 description = "Bio image reading, metadata and some affine registration."
 authors = [
     { name = "W. Pomp", email = "w.pomp@nki.nl" }