new branch with numpy nd array objects as layers

.spyproject/config/backups/workspace.ini.bak

@@ -4,7 +4,7 @@ save_data_on_exit = True
 save_history = True
 save_non_project_files = False
 project_type = empty-project-type
-recent_files = ['../clumpy-cases/simple_case/run_raw.py', 'clumpy/calibration/_calibrator.py', 'clumpy/_base/_land.py', 'clumpy/allocation/_allocator.py', 'clumpy/allocation/_unbiased.py', 'clumpy/allocation/_unbiased_mono_pixel.py', 'clumpy/feature_selection/_mRMR.py']
+recent_files = ['../clumpy-cases/simple_case/run_raw.py', 'clumpy/calibration/_calibrator.py', 'clumpy/layer/_layer.py', 'clumpy/layer/_land_use_layer.py', 'clumpy/map/_land_use_map.py', 'clumpy/map/_map.py', 'clumpy/__init__.py', 'clumpy/map/__init__.py', 'requirements.txt']
 
 [main]
 version = 0.2.0

.spyproject/config/workspace.ini

@@ -4,7 +4,7 @@ save_data_on_exit = True
 save_history = True
 save_non_project_files = False
 project_type = empty-project-type
-recent_files = ['../clumpy-cases/simple_case/run_raw.py', 'clumpy/calibration/_calibrator.py', 'clumpy/layer/_layer.py', 'clumpy/layer/_land_use_layer.py', 'clumpy/map/_land_use_map.py', 'clumpy/map/_map.py', 'clumpy/__init__.py', 'clumpy/map/__init__.py']
+recent_files = ['../clumpy-cases/simple_case/run_raw.py', 'clumpy/calibration/_calibrator.py', 'clumpy/layer/_layer.py', 'clumpy/layer/_land_use_layer.py', 'clumpy/map/_land_use_map.py', 'clumpy/map/_map.py', 'clumpy/__init__.py', 'clumpy/map/__init__.py', 'requirements.txt']
 
 [main]
 version = 0.2.0

README.md

@@ -20,6 +20,9 @@ François-Rémi Mazy
 
 *The software provided by pip is not up to date !*
 
+Create conda env
+`conda create -n clumpy python=3.8 spyder gdal rasterio`
+
 build the package :
 `python3 setup.py sdist bdist_wheel`
 

clumpy/layer/_layer.py

@@ -13,20 +13,22 @@ logger = logging.getLogger('clumpy')
 
 from ..tools._console import stop_log
 
-class Layer:
+class Layer(np.ndarray):
     """Layer base element
     """
+    
+    def __new__(cls, input_array):
+        obj = np.asarray(input_array).view(cls)
+        return obj
 
     def __init__(self,
                  label=None,
-                 time=0,
                  path=None,
                  data=None,
                  band_tags=None,
                  copy_geo=None):
         
         self.label = label
-        self.time = time
         self.path = path
         self.copy_geo = copy_geo