def getNodIDs(inp_fileName):
'''
Function that returns the node id's of the co-ordinates as a list.
'''
nsidData=[]
getNSID=sncfheaders.showNSID(inp_fileName)
startNSID=int(getNSID)
numOfNodes=sncfheaders.getNumberOfNodes(inp_fileName)
for itr in range(0,numOfNodes):
nsidData.append(itr+startNSID)
return nsidData
def writeCoordinates (inp_fileName,out_fileName):
'''
A follow up routine for getCoordinates() method. Reads the co-ordinates from sncf file inp_fileName Writes the co-ordinates to an XML file
out_fileName, that contains node information.
'''
# Since sncfheaders.showNSID() returns the NSID in string literal, it would be wise to convert it to integer to able to operate on it.
# An empty list that makes space for data to write to XML files
xmlBuff=[]
# Initial setup
nsidData=[] # Container for rest of NSID's
getNSID=sncfheaders.showNSID(inp_fileName)
startNSID=int(getNSID)
# Get n number of nodes
numOfNodes=sncfheaders.getNumberOfNodes(inp_fileName)
# Append data into nsidData
# Has NSIDs for the rest of the nodes.
for itr in range(0,numOfNodes):
nsidData.append(itr+startNSID)
# Store the data of coordinates in coordData
coordData=getCoordinates(inp_fileName)
## Structure design of XML and replace variables with XML data.
## XML initial tags
nL = sncfheaders.printNew()
xmlBegin='''<?xml version="1.0" encoding="UTF-8"?>
<nodes xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="http://sumo.sf.net/xsd/nodes_file.xsd">'''+sncfheaders.printNew()
xmlEnd='</nodes>'
xmlLineBegin=' <node id=\"'
xmlLineEnd='/>'
xmlX='x=\"'
xmlY='y=\"'
## For the fact that 'number' of nodes equal the number of NSIDs, generate the exact 'number' of intermediate XML tags.
fileHandle=open(out_fileName,'w')
fileHandle.write(xmlBegin)
for itr in range(0,numOfNodes):
xmlLine=xmlLineBegin+str (nsidData[itr])+'\"'+' '+xmlX+str(coordData[itr].split(',')[0])+'\"'+' '+xmlY+str(coordData[itr].split(',')[1].split('\n')[0])+'\"'+' '+xmlLineEnd+nL
fileHandle.write(xmlLine)
xmlBuff.append(xmlLine)
## Keep the line below for diagnostics!
## print xmlBuff
fileHandle.write(xmlEnd)
fileHandle.close()
baseName=os.path.basename (out_fileName)
extName=os.path.splitext(baseName)[1]
if extName=='.xml':
print'''
[writeCoordinates says]: The file %s has been written to the location %s.
''' %(out_fileName,os.getcwd())
else:
print'''
[writeCoordinates says]: The file %s should have an extension *.nod.xml. Please rename it manually.
''' %(out_fileName)
