Change tostring to tobytes (closes #136)

Author: tboggs

spectral/graphics/rasterwindow.py

@@ -8,6 +8,8 @@
 import wx
 from spectral.graphics.graphics import SpyWindow
 
+from ..utilities.python23 import tobytes
+
 logger = logging.getLogger('spectral')
 
 class RasterWindow(wx.Frame, SpyWindow):
@@ -26,7 +28,7 @@ def __init__(self, parent, index, rgb, **kwargs):
 
         img = wx.EmptyImage(rgb.shape[0], rgb.shape[1])
         img = wx.EmptyImage(rgb.shape[1], rgb.shape[0])
-        img.SetData(rgb.tostring())
+        img.SetData(tobytes(rgb))
         self.bmp = img.ConvertToBitmap()
         self.kwargs = kwargs
         wx.Frame.__init__(self, parent, index, title,

spectral/io/envi.py

@@ -23,7 +23,7 @@
 
 import spectral as spy
 from ..spectral import BandInfo
-from ..utilities.python23 import IS_PYTHON3, is_string
+from ..utilities.python23 import IS_PYTHON3, is_string, tobytes
 from ..utilities.errors import SpyException
 from .bilfile import BilFile
 from .bipfile import BipFile
@@ -681,7 +681,7 @@ def _write_image(hdr_file, data, header, **kwargs):
     # bufsize = data.shape[0] * data.shape[1] * np.dtype(dtype).itemsize
     bufsize = data.shape[0] * data.shape[1] * data.dtype.itemsize
     fout = builtins.open(img_file, 'wb', bufsize)
-    fout.write(data.tostring())
+    fout.write(tobytes(data))
     fout.close()