From f5cb42dc458744acc6b1bbdc997032a73513bf88 Mon Sep 17 00:00:00 2001
From: Melissa Linkert <melissa@glencoesoftware.com>
Date: Mon, 2 Dec 2024 08:56:17 -0600
Subject: [PATCH] Fix Z index mapping

---
 .../java/com/glencoesoftware/omero/zarr/ZarrPixelBuffer.java   | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/main/java/com/glencoesoftware/omero/zarr/ZarrPixelBuffer.java b/src/main/java/com/glencoesoftware/omero/zarr/ZarrPixelBuffer.java
index d04d121..763bebc 100644
--- a/src/main/java/com/glencoesoftware/omero/zarr/ZarrPixelBuffer.java
+++ b/src/main/java/com/glencoesoftware/omero/zarr/ZarrPixelBuffer.java
@@ -831,9 +831,8 @@ public void setResolutionLevel(int resolutionLevel) {
             // if no Z downsampling, this is just an identity map
             int fullResZ = fullResolutionArray.getShape()[2];
             int arrayZ = array.getShape()[2];
-            int zStep = fullResZ / arrayZ;
             for (int z=0; z<fullResZ; z++) {
-                zIndexMap.put(z, z * zStep);
+                zIndexMap.put(z, Math.round(z * arrayZ / fullResZ));
             }
         } catch (Exception e) {
             // FIXME: Throw the right exception