In [12]:

    

import os
import pandas as pd


    

In [11]:

    

#Import NetworkX package; install, if necessary
try:
    import networkx as nx
except:
    import pip
    pip.main(['install','networkx'])
    import networkx as nx


    

In [17]:

    

#Import simpledbf package; install, if necessary **https://pypi.python.org/pypi/simpledbf**
try:
    from simpledbf import Dbf5
except:
    import pip
    pip.main(['install','simpledbf'])
    from simpledbf import Dbf5


    

In [27]:

    

#Read the NHDFlowlineVAA file as a dbf object, then a dataframe
vaaFilename = 'NHD_H_Maryland_Shape/Shape/NHDFlowlineVAA.dbf'
dbfVAA = Dbf5(vaaFilename)


    

    
Out[27]:





22

In [19]:

    

#Convert to dataframe
df = dbfVAA.to_dataframe()


    

In [30]:

    

dfX = df.dropna()


    

In [34]:

    

dfX[dfX.FROMNODE > 0]


    

    
Out[34]:






  

    

      

      
PERMANENT_
      
FDATE
      
STREAMLEVE
      
STREAMORDE
      
FROMNODE
      
TONODE
      
HYDROSEQ
      
LEVELPATHI
      
PATHLENGTH
      
TERMINALPA
      
...
      
STARTFLAG
      
TERMINALFL
      
DNLEVEL
      
THINNERCOD
      
UPLEVELPAT
      
UPHYDROSEQ
      
UPMINHYDRO
      
DNLEVELPAT
      
DNMINHYDRO
      
DNDRAINCOU
    
  
  

  

0 rows × 22 columns

In [ ]: