From cda3d468341225a989fc2d3601fb7a85607fc516 Mon Sep 17 00:00:00 2001
From: Vincent Sarago <vincent.sarago@gmail.com>
Date: Fri, 25 Oct 2024 21:13:47 +0200
Subject: [PATCH] Update tests/test_io_xarray.py

Co-authored-by: Henry Rodman <henry.rodman@gmail.com>
---
 tests/test_io_xarray.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tests/test_io_xarray.py b/tests/test_io_xarray.py
index 4ea34e75..410231b9 100644
--- a/tests/test_io_xarray.py
+++ b/tests/test_io_xarray.py
@@ -536,6 +536,10 @@ def test_xarray_reader_no_dims():
 
 def test_xarray_reader_Y_axis():
     """test XarrayReader with 2D dataset."""
+    # Create a DataArray where the y coordinates are in increasing order
+    # (this is the opposite of typical raster data)
+    # This array will have a positive y resolution in the affine transform
+    # and the data values increase with the y coordinates
     arr = numpy.arange(0, 33 * 35).reshape(1, 33, 35)
     data = xarray.DataArray(
         arr,