feat: another cube example

Author: seankmartin

examples/serve_default_dir.py

@@ -1,4 +1,5 @@
 from neuroglancer_utils.create_datasets.create_full_cube import create_cube
+from neuroglancer_utils.create_datasets.create_float_cube import create_float_cube
 from neuroglancer_utils.create_datasets.create_full_cube_16 import (
     create_cube as create_cube_16,
 )
@@ -10,6 +11,7 @@
 from neuroglancer_utils.local_server import create_server
 
 create_cube()
+create_float_cube()
 create_cube_16()
 create_sphere()
 create_allen_multi()

neuroglancer_utils/create_datasets/create_float_cube.py

@@ -0,0 +1,14 @@
+from cloudvolume import CloudVolume
+import numpy as np
+
+def create_float_cube(output_path="file://datasets/cube-float-res"):
+    rawdata = np.full(shape=(100, 100, 100), fill_value=70.0).astype(np.float32)
+    CloudVolume.from_numpy(
+        rawdata,
+        vol_path=output_path,
+        resolution=(1.5, 1.5, 2.1),
+        chunk_size=(100, 100, 100),
+        layer_type="image",
+        progress=True,
+        compress=False
+    )

neuroglancer_utils/create_datasets/create_full_cube.py

@@ -6,7 +6,7 @@ def create_cube(output_path="file://datasets/cube"):
     CloudVolume.from_numpy(
         rawdata,
         vol_path=output_path,
-        resolution=(40, 40, 40),
+        resolution=(2, 2, 4),
         chunk_size=(100, 100, 100),
         layer_type="image",
         progress=True,