Merge pull request #1595 from danforthcenter/add_geores_to_spectral

Add metadata attribute to spectral_data class

Author: nfahlgren

docs/Spectral_data.md

@@ -38,9 +38,7 @@ Attributes are accessed as spectral_data_instance.*attribute*.
 
 **filename**: The filename where the data originated from
 
-**geo_transform**: The affine transformation matrix used to convert from an xy coordinate system to a georeferenced coordinate system. Default is the input list used by the affine package to create an identity matrix.
-
-**geo_crs**: The original coordinate system of a georeferenced image. Default is "None".
+**metadata**: Metadata in a dictionary. Included keys might be specific to hyperspectral or geospatial image types 
 
 ### Example
 

plantcv/plantcv/classes.py

@@ -299,7 +299,7 @@ class Spectral_data:
 
     def __init__(self, array_data, max_wavelength, min_wavelength, max_value, min_value, d_type, wavelength_dict,
                  samples, lines, interleave, wavelength_units, array_type, pseudo_rgb, filename, default_bands,
-                 geo_transform=None, geo_crs=None):
+                 metadata=None):
         # The actual array/datacube
         self.array_data = array_data
         # Min/max available wavelengths (for spectral datacube)
@@ -326,13 +326,10 @@ def __init__(self, array_data, max_wavelength, min_wavelength, max_value, min_va
         self.filename = filename
         # The default band indices needed to make an pseudo_rgb image, if not available then store None
         self.default_bands = default_bands
-        # The transformation matrix that converts xy coordinates to georeferenced coordinates
-        # Default is the input list for affine.Affine to make an identity matrix
-        self.geo_transform = geo_transform
-        if not geo_transform:
-            self.geo_transform = (1.0, 0.0, 0.0, 0.0, 1.0, 0.0)
-        # The coordinate system of a georeferenced image
-        self.geo_crs = geo_crs
+        # Metadata, flexible components in a dictionary
+        self.metadata = metadata
+        if not metadata:
+            self.metadata = {}
 
 
 class PSII_data: