실시간 미세먼지농도 Open Api 자료 받아와 저장하기, 받아온 자료 그래프로 그리기

텍스트 파일로 자료 저장하기.

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# -*- coding: cp949 -*-

import urllib2

import os

import time as tm

import numpy as np

import matplotlib.dates as date

import datetime

import sys

gap=input("몇초 동안의 자료를 수집할까요?")

lines=np.empty((gap,3))

for i in range(0,gap):

    url="http://openapi.seoul.go.kr:8088/****/json/ListAvgOfSeoulAirQualityService/1/5";

    data=urllib2.urlopen(url).read();

    stp=data.find("PM10")+6;

    edp=data.find("PM25")-2;

    asctime=str(tm.asctime())

    asctime=asctime[4:24]

    if asctime[0:3]=='Sep':

        asctime=asctime.replace('Sep','9')

    asctime=asctime.replace(':','')

    asctime=asctime.replace(' ','')

    asctime=int(asctime)

    lines[i][0]=asctime

    lines[i][1]=tm.time()

    lines[i][2]=float(data[stp:edp])

    loading=gap-i

    print loading

    tm.sleep(1)

dts=map(datetime.datetime.fromtimestamp,lines[:,1])

fds=date.date2num(dts)

lines[:,1]=fds

filename0=str(lines[0][0])

filename0=filename0.replace('.','')

filename0=filename0[:9]

filename1=str(lines[gap-1][0])

filename1=filename1.replace('.','')

filename1=filename1[:9]

nlocaltime=str(tm.localtime())

ystp=nlocaltime.find('tm_year')+8

yedp=ystp+4

nyear=str(nlocaltime[ystp:yedp])

mstp=nlocaltime.find('tm_mon')+7

medp=nlocaltime.find(', tm_mday')

nmon=str(nlocaltime[mstp:medp])

dstp=nlocaltime.find('tm_mday')+8

dedp=nlocaltime.find(', tm_hour')

nday=str(nlocaltime[dstp:dedp])

if os.path.exists(nyear+nmon+nday):

    os.chdir(nyear+nmon+nday)

else:

    os.mkdir(nyear+nmon+nday);

    os.chdir(nyear+nmon+nday)

np.savetxt(filename0+' to '+filename1+'.txt',lines,header='asctime(m,d,h,m,s,y),date2num,pm10(microgram/cubic meter)')

os.chdir(os.path.dirname(os.getcwd()))

print filename0+' to '+filename1+'.txt 로 저장되었습니다.'

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텍스트 파일로 자료 저장하기 끝.

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자료를 바탕으로 그래프 그리기.

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# -*- coding: cp949 -*-

import os

import numpy as np

import matplotlib.pyplot as plt

import matplotlib.dates as date

import glob as gb

getdate=str(input("원하는 자료의 년도,월,일 을 기호 없이 입력해 주십시오."))

os.chdir(getdate)

filelist=gb.glob('*.txt')

hfmt = date.DateFormatter('%m/%d %H:%M:%S')

for i in range(0,len(filelist)):

    check=raw_input(filelist[i]+"을 그릴 까요?(y/n)")

    if check == 'y':

        numtime,pm10=np.loadtxt(filelist[i],unpack=True,skiprows=1,usecols=[1,2])

        fig=plt.figure(i)

        ax=fig.add_subplot(111)

        ax.xaxis.set_major_locator(date.AutoDateLocator())

        ax.xaxis.set_major_formatter(hfmt)

        plt.plot(numtime,pm10)

        plt.xticks(rotation='vertical')

        plt.subplots_adjust(bottom=.3)

        plt.xlabel('Time')

        plt.ylabel('$\mu$g/m^3')

        plt.title(filelist[i])

        figname=filelist[i]

        figname=figname[:-4]

        if os.path.exists('fig'):

            os.chdir('fig')

        else:

            os.mkdir('fig');

            os.chdir('fig')

        plt.savefig(figname+".png")

        os.chdir(os.path.dirname(os.getcwd()))

        print figname+'.png 로 저장되었습니다.'

    else:

        pass