Blocks for some MSAs not avilable in geosnap

For Prescott, Arizona - fips = 39140 blocks are not available for any year in geosnap. For Dayton, Ohio - fips = 19380 blocks are not available for any year. For Fairbanks, Alaska - fips = 21820 blocks are not available for 2017, but are available for every other year. For Anchorage, Alaska - fips = 11260 blocks are not available for 2017, but are available for every other year.

When you try to instantiate a community with the above mentioned fips and year combos, this is the error:

ValueError                                Traceback (most recent call last)
<ipython-input-27-35add9c4a2f7> in <module>
----> 1 dayt = Community.from_lodes(msa_fips='19380',years=[2010])

~/Projects/geosnap/geosnap/_community.py in from_lodes(cls, state_fips, county_fips, msa_fips, fips, boundary, years, dataset)
   1833                 ]
   1834 
-> 1835         gdf = datasets.blocks_2010(states=states, fips=(tuple(allfips)))
   1836         gdf = gdf.drop(columns=["year"])
   1837         gdf = _fips_filter(

~/Projects/geosnap/geosnap/_data.py in blocks_2010(self, states, convert, fips)
    247             blks[state]["year"] = 2010
    248         blocks = list(blks.values())
--> 249         blocks = pd.concat(blocks, sort=True)
    250         if convert:
    251             return _convert_gdf(blocks)

~/anaconda3/envs/geosnap/lib/python3.7/site-packages/pandas/core/reshape/concat.py in concat(objs, axis, join, ignore_index, keys, levels, names, verify_integrity, sort, copy)
    282         verify_integrity=verify_integrity,
    283         copy=copy,
--> 284         sort=sort,
    285     )
    286 

~/anaconda3/envs/geosnap/lib/python3.7/site-packages/pandas/core/reshape/concat.py in __init__(self, objs, axis, join, keys, levels, names, ignore_index, verify_integrity, copy, sort)
    329 
    330         if len(objs) == 0:
--> 331             raise ValueError("No objects to concatenate")
    332 
    333         if keys is None:

ValueError: No objects to concatenate

oturns / geosnap

Blocks for some MSAs not avilable in geosnap #293