Ascii error with oe_generate_legend.py

[srussking]

This seems likely to be related to my version of python (2.7), but I am getting the following error when processing xml.

Reading color map: http://map1b.vis.earthdata.nasa.gov/colormaps/AIRS_Dust_Score.xml
Accessing URL http://map1b.vis.earthdata.nasa.gov/colormaps/AIRS_Dust_Score.xml
Traceback (most recent call last):
File "/Users/russ/Rails/airs_rails/lib/assets/oe_generate_legend.py", line 932, in
colormap_elements = parse_colormaps(colormap_location, options.verbose)
File "/Users/russ/Rails/airs_rails/lib/assets/oe_generate_legend.py", line 202, in parse_colormaps
tree=ET.fromstring(dom.toxml())
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/xml/etree/ElementTree.py", line 1300, in XML
parser.feed(text)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/xml/etree/ElementTree.py", line 1640, in feed
self._parser.Parse(data, 0)
UnicodeEncodeError: 'ascii' codec can't encode character u'\u2013' in position 217: ordinal not in range(128)

This is happening on files loaded via the local store, or via url.

[srussking]

Fixed by adding encoding to a couple of places. Fix can be seen here

https://github.com/srussking/onearth/blob/master/src/generate_legend/oe_generate_legend.py

line 97

    def __str__(self):
        return self.__repr__().encode('utf-8')

line 201

    tree=ET.fromstring(dom.toxml(encoding='utf-8'))