Reading a CSV file and plotting columns
Source code name: "io_read_csvdata.py"
Programming language: Python
Topic: File IO/CSV
DMelt Version 1. Last modified: 12/11/2015. License: Pro
https://datamelt.org/code/cache/io_read_csvdata_7850.py
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from java.awt import Color,Font
from jhplot import *

file=SystemDir+fSep+"macros"+fSep+"examples"+fSep+"data"+fSep+"dcs_short.csv"
fdata = open(file,"r")
webdata=fdata.readlines() 
print 'LENGTH  :', len(webdata)
data=[]
for d in webdata:
     line=d.split(",")
     data.append(line)


c1=HPlot("Trips")
c1.visible()
c1.setAutoRange()
c1.setNameX("2011 Week")
c1.setNameY("Nr Trips")

# each histogram bin- one week
h=P1D("Status vs timestamp")
h.setFill(1)
h.setErrX(0)
h.setErrY(0)
h.setFillColor(Color.red)
h.setColor(Color.red)

for row in data:
    timestamp=int(row[0])
    time=row[1]
    status=int(row[4])
    h.add(timestamp,status)
c1.draw(h)
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