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RPi / python > plotly > 時系列グラフ > プロットを関数化 > 5個単位でのプロット例

Last updated at Posted at 2016-01-03

http://qiita.com/7of9/items/01848f80188bf5c876d7
の続き

plotlyプロット部分を関数化した。

160103-listPlot.py
import plotly.plotly as py
import time
import datetime

def plotly_plot(xlist, ylist, addnum, grpTtl, filnam):
    if len(xlist) < addnum:
        return False

    py.plot({
        "data":[{ "x":xlist, "y":ylist }],
        "layout":{ "title": grpTtl }
    },filename=filnam
    ,fileopt='extend'
    ,privacy='public')

    return True

xlist = [0] * 0
ylist = [0] * 0

graphTitle = "graph as a function of time"
filename = "timegraph160103c"

while True:
    today = datetime.datetime.today()
    xdt = today.strftime("%Y-%m-%d %H:%M:%S")
    yval = 3.1415
    xlist.append(xdt)
    ylist.append(yval)
    time.sleep(3)

    res = plotly_plot(xlist, ylist, 5, graphTitle, filename)
    if res == False:
        continue

    print "added at " + str(xlist[1:])

    del xlist[1:]
    del ylist[1:]

結果 https://plot.ly/276/~7of9/

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