# How to make diagram x_label by time and x_lable can move automatic

Dear all

could some expert can help me.

I have modify from one demo. but i do not how to change the x_lable to time like H:M:S, and can move it. i have try some way, but failed.

hope some expert can do me a favor.

thanks a lot

···

######################

# coding=utf-8

import os

import pprint

import random, time

import sys

from PyQt4 import QtGui, QtCore

import time

import datetime

import matplotlib

matplotlib.use(‘WXAgg’)

from matplotlib.figure import Figure

from matplotlib.backends.backend_qt4agg import \

FigureCanvasQTAgg as FigCanvas, \

import numpy as np

import pylab

class DataGen(object):

“”" A silly class that generates pseudo-random data for

display in the plot.

“”"

def init(self, init=50):

self.data = self.init = init

def next(self):

self._recalc_data()

return self.data

def _recalc_data(self):

delta = random.uniform(-0.5, 0.5)

r = random.random()

if r > 0.9:

self.data += delta * 15

elif r > 0.8:

# attraction to the initial value

delta += (0.5 if self.init > self.data else -0.5)

self.data += delta

else:

self.data += delta

class myThing():

def init(self):

self.running = True

self.vec = [0]

self.dg = DataGen()

def run(self):

while self.running:

time.sleep(1)

self.vec.append(self.dg.next())

print “Splat”

def getVec(self):

return self.vec

def stop(self):

self.running = False

def init(self):

print “initializing myThing…”

def del(self):

def getVec(self):

class ApplicationWindow(QtGui.QMainWindow):

“”" The main window of the application

“”"

def init(self):

QtGui.QMainWindow.init(self)

self.setAttribute(QtCore.Qt.WA_DeleteOnClose)

self.setWindowTitle(‘Demo: dynamic matplotlib graph’)

self.thing1 = myThing()

self.thing2 = myThing()

self.starttime = int(time.time())

#self.create_status_bar()

self.create_main_panel()

self.redraw_timer = QtCore.QTimer(self)

QtCore.QObject.connect(self.redraw_timer, QtCore.SIGNAL(“timeout()”), self.on_redraw_timer)

self.redraw_timer.start(4000)

# QtCore.Qt.CTRL + QtCore.Qt.Key_S)

QtCore.Qt.CTRL + QtCore.Qt.Key_X)

def create_main_panel(self):

self.panel = QtGui.QFrame(self)

self.setCentralWidget(self.panel)

self.init_plot()

self.canvas = FigCanvas(self.fig)

self.canvas.setMinimumHeight(150)

self.vbox = QtGui.QVBoxLayout()

self.panel.setLayout(self.vbox)

#self.vbox.Fit(self)

self.unit = 20

width, height = self.geometry().width(), self.geometry().height()

self.show()

def init_plot(self):

self.dpi = 100

self.fig = Figure((5.0, 3.0), dpi=self.dpi)

self.axes.set_axis_bgcolor(‘black’)

self.axes.set_title(‘Very important random data’, size=10)

self.axes.set_xlabel(‘Time flies like an arrow’,size=10)

self.axes.set_ylabel(‘Random is just random’,size=10)

pylab.setp(self.axes.get_xticklabels(), fontsize=8)

pylab.setp(self.axes.get_yticklabels(), fontsize=8)

self.plot_data = self.axes.plot(

self.thing1.getVec(),

linewidth=0.5,

color=(1, 1, 0),

#marker=‘o’,

label=“set1”,

)[0]

print self.thing1.getVec(), “<<>>”

self.plot_data2 = self.axes.plot(

self.thing2.getVec(),

linewidth=1,

dashes=[.2, .4],

color=(0, 1, 1),

label=“set2”,

)[0]

def draw_plot(self):

“”" Redraws the plot

“”"

self.data = self.thing1.getVec()

self.data2 = self.thing2.getVec()

def do_cal(urdata):

newdata = []

for x in range(len(urdata)):

urtime = x + self.starttime

newdata.append(urtime)

return newdata

xmax = len(self.data) if len(self.data) > 50 else 50

xmin = xmax - 50

min1 = min(self.data)

min2 = min(self.data2)

theMin = min(min1, min2)

ymin = round(theMin, 0) - 1

max1 = max(self.data)

max2 = max(self.data2)

theMax = max(max1, max2)

ymax = round(theMax, 0) + 1

self.axes.set_xbound(lower=xmin, upper=xmax)

self.axes.set_ybound(lower=ymin, upper=ymax)

self.axes.grid(True, color=‘gray’)

pylab.setp(self.axes.get_xticklabels(),

visible=True)

self.plot_data.set_xdata(np.arange(len(self.data)))

self.plot_data.set_ydata(np.array(self.data))

self.plot_data2.set_xdata(np.arange(len(self.data2)))

#self.plot_data2.set_xdata(np.array(newdata2))

self.plot_data2.set_ydata(np.array(self.data2))

self.canvas.draw()

def on_redraw_timer(self):

self.draw_plot()

def on_exit(self):

self.close()

def closeEvent(self, event):

for thing in (self.thing1, self.thing2):

if name == ‘main’:

app = QtGui.QApplication(sys.argv)

aw = ApplicationWindow()

aw.show()

sys.exit(app.exec_())

#################################

is there someone can help me ?
many thanks

···

2014-06-19 19:36 GMT+07:00 不坏阿峰 <onlydebian@…1896…>:

Dear all

could some expert can help me.

I have modify from one demo. but i do not how to change the x_lable to time like H:M:S, and can move it. i have try some way, but failed.

hope some expert can do me a favor.

thanks a lot

######################

# coding=utf-8

import os

import pprint

import random, time

import sys

from PyQt4 import QtGui, QtCore

import time

import datetime

import matplotlib

matplotlib.use(‘WXAgg’)

from matplotlib.figure import Figure

from matplotlib.backends.backend_qt4agg import \

FigureCanvasQTAgg as FigCanvas, \

import numpy as np

import pylab

class DataGen(object):

“”" A silly class that generates pseudo-random data for

display in the plot.

“”"

def init(self, init=50):

self.data = self.init = init

def next(self):

self._recalc_data()

return self.data

def _recalc_data(self):

delta = random.uniform(-0.5, 0.5)

r = random.random()

if r > 0.9:

self.data += delta * 15

elif r > 0.8:

# attraction to the initial value

delta += (0.5 if self.init > self.data else -0.5)

self.data += delta

else:

self.data += delta

class myThing():

def init(self):

self.running = True

self.vec = [0]

self.dg = DataGen()

def run(self):

while self.running:

time.sleep(1)

self.vec.append(self.dg.next())

print “Splat”

def getVec(self):

return self.vec

def stop(self):

self.running = False

def init(self):

print “initializing myThing…”

def del(self):

def getVec(self):

class ApplicationWindow(QtGui.QMainWindow):

“”" The main window of the application

“”"

def init(self):

QtGui.QMainWindow.init(self)

self.setAttribute(QtCore.Qt.WA_DeleteOnClose)

self.setWindowTitle(‘Demo: dynamic matplotlib graph’)

self.thing1 = myThing()

self.thing2 = myThing()

self.starttime = int(time.time())

#self.create_status_bar()

self.create_main_panel()

self.redraw_timer = QtCore.QTimer(self)

QtCore.QObject.connect(self.redraw_timer, QtCore.SIGNAL(“timeout()”), self.on_redraw_timer)

self.redraw_timer.start(4000)

# QtCore.Qt.CTRL + QtCore.Qt.Key_S)

QtCore.Qt.CTRL + QtCore.Qt.Key_X)

def create_main_panel(self):

self.panel = QtGui.QFrame(self)

self.setCentralWidget(self.panel)

self.init_plot()

self.canvas = FigCanvas(self.fig)

self.canvas.setMinimumHeight(150)

self.vbox = QtGui.QVBoxLayout()

self.panel.setLayout(self.vbox)

#self.vbox.Fit(self)

self.unit = 20

width, height = self.geometry().width(), self.geometry().height()

self.show()

def init_plot(self):

self.dpi = 100

self.fig = Figure((5.0, 3.0), dpi=self.dpi)

self.axes.set_axis_bgcolor(‘black’)

self.axes.set_title(‘Very important random data’, size=10)

self.axes.set_xlabel(‘Time flies like an arrow’,size=10)

self.axes.set_ylabel(‘Random is just random’,size=10)

pylab.setp(self.axes.get_xticklabels(), fontsize=8)

pylab.setp(self.axes.get_yticklabels(), fontsize=8)

self.plot_data = self.axes.plot(

self.thing1.getVec(),

linewidth=0.5,

color=(1, 1, 0),

#marker=‘o’,

label=“set1”,

)[0]

print self.thing1.getVec(), “<<>>”

self.plot_data2 = self.axes.plot(

self.thing2.getVec(),

linewidth=1,

dashes=[.2, .4],

color=(0, 1, 1),

label=“set2”,

)[0]

def draw_plot(self):

“”" Redraws the plot

“”"

self.data = self.thing1.getVec()

self.data2 = self.thing2.getVec()

def do_cal(urdata):

newdata = []

for x in range(len(urdata)):

urtime = x + self.starttime

newdata.append(urtime)

return newdata

xmax = len(self.data) if len(self.data) > 50 else 50

xmin = xmax - 50

min1 = min(self.data)

min2 = min(self.data2)

theMin = min(min1, min2)

ymin = round(theMin, 0) - 1

max1 = max(self.data)

max2 = max(self.data2)

theMax = max(max1, max2)

ymax = round(theMax, 0) + 1

self.axes.set_xbound(lower=xmin, upper=xmax)

self.axes.set_ybound(lower=ymin, upper=ymax)

self.axes.grid(True, color=‘gray’)

pylab.setp(self.axes.get_xticklabels(),

visible=True)

self.plot_data.set_xdata(np.arange(len(self.data)))

self.plot_data.set_ydata(np.array(self.data))

self.plot_data2.set_xdata(np.arange(len(self.data2)))

#self.plot_data2.set_xdata(np.array(newdata2))

self.plot_data2.set_ydata(np.array(self.data2))

self.canvas.draw()

def on_redraw_timer(self):

self.draw_plot()

def on_exit(self):

self.close()

def closeEvent(self, event):

for thing in (self.thing1, self.thing2):

if name == ‘main’:

app = QtGui.QApplication(sys.argv)

aw = ApplicationWindow()

aw.show()

sys.exit(app.exec_())

#################################

is there someone can help me ?

Posting a *simple*, self-contained example as a starting point would make it more likely that someone would understand your question. Leave out everything that is irrelevant--I suspect all the gui and threading code is in that category.

Also, although it is not directly related to your question, please note that you are using a horrible mixture of backend invocations, and even if it works now, it will do you no good in the long run.

See the embedding examples: no matplotlib.use, no pylab, one and only one gui toolkit.

I also suspect the answer to your question is at least partly in one of the examples of plotting with dates; dates and times are handled together. Here is one such example:

http://matplotlib.org/examples/pylab_examples/date_demo1.html

Eric

···

On 2014/06/21, 3:39 PM, 不坏阿峰 wrote:

many thanks

2014-06-19 19:36 GMT+07:00 不坏阿峰 <onlydebian@…287…
<mailto:onlydebian@…287…>>:

Dear all

could some expert can help me.
I have modify from one demo. but i do not how to change the x_lable
to time like H:M:S, and can move it. i have try some way, but failed.

hope some expert can do me a favor.
thanks a lot

######################
# coding=utf-8
import os
import pprint
import random, time
import sys
from PyQt4 import QtGui, QtCore
import time
import datetime

import matplotlib
matplotlib.use('WXAgg')
from matplotlib.figure import Figure
from matplotlib.backends.backend_qt4agg import \
FigureCanvasQTAgg as FigCanvas, \
import numpy as np
import pylab
class DataGen(object):
""" A silly class that generates pseudo-random data for
display in the plot.
"""
def __init__(self, init=50):
self.data = self.init = init
def next(self):
self._recalc_data()
return self.data
def _recalc_data(self):
delta = random.uniform(-0.5, 0.5)
r = random.random()
if r > 0.9:
self.data += delta * 15
elif r > 0.8:
# attraction to the initial value
delta += (0.5 if self.init > self.data else -0.5)
self.data += delta
else:
self.data += delta

class myThing():
def __init__(self):
self.running = True
self.vec = [0]
self.dg = DataGen()

def run(self):
while self.running:
time.sleep(1)
self.vec.append(self.dg.next())
print "Splat"
def getVec(self):
return self.vec
def stop(self):
self.running = False
def __init__(self):
print "initializing myThing..."
def __del__(self):
def getVec(self):
class ApplicationWindow(QtGui.QMainWindow):
""" The main window of the application
"""
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.setAttribute(QtCore.Qt.WA_DeleteOnClose)
self.setWindowTitle('Demo: dynamic matplotlib graph')
self.thing1 = myThing()
self.thing2 = myThing()
self.starttime = int(time.time())

#self.create_status_bar()
self.create_main_panel()
self.redraw_timer = QtCore.QTimer(self)
QtCore.QObject.connect(self.redraw_timer,
QtCore.SIGNAL("timeout()"), self.on_redraw_timer)
self.redraw_timer.start(4000)
# QtCore.Qt.CTRL + QtCore.Qt.Key_S)
QtCore.Qt.CTRL + QtCore.Qt.Key_X)
def create_main_panel(self):
self.panel = QtGui.QFrame(self)
self.setCentralWidget(self.panel)
self.init_plot()
self.canvas = FigCanvas(self.fig)
self.canvas.setMinimumHeight(150)
self.vbox = QtGui.QVBoxLayout()

self.panel.setLayout(self.vbox)
#self.vbox.Fit(self)
self.unit = 20
width, height = self.geometry().width(),
self.geometry().height()
self.show()
def init_plot(self):
self.dpi = 100
self.fig = Figure((5.0, 3.0), dpi=self.dpi)
self.axes.set_axis_bgcolor('black')

self.axes.set_title('Very important random data', size=10)
self.axes.set_xlabel('Time flies like an arrow',size=10)
self.axes.set_ylabel('Random is just random',size=10)
pylab.setp(self.axes.get_xticklabels(), fontsize=8)
pylab.setp(self.axes.get_yticklabels(), fontsize=8)
self.plot_data = self.axes.plot(
self.thing1.getVec(),
linewidth=0.5,
color=(1, 1, 0),
#marker='o',
label="set1",
)[0]
print self.thing1.getVec(), "<<>>"
self.plot_data2 = self.axes.plot(
self.thing2.getVec(),
linewidth=1,
dashes=[.2, .4],
color=(0, 1, 1),
label="set2",
)[0]

def draw_plot(self):
""" Redraws the plot
"""
self.data = self.thing1.getVec()
self.data2 = self.thing2.getVec()
def do_cal(urdata):
newdata = []
for x in range(len(urdata)):
urtime = x + self.starttime
newdata.append(urtime)
return newdata

xmax = len(self.data) if len(self.data) > 50 else 50

xmin = xmax - 50

min1 = min(self.data)
min2 = min(self.data2)
theMin = min(min1, min2)

ymin = round(theMin, 0) - 1

max1 = max(self.data)
max2 = max(self.data2)
theMax = max(max1, max2)

ymax = round(theMax, 0) + 1

self.axes.set_xbound(lower=xmin, upper=xmax)
self.axes.set_ybound(lower=ymin, upper=ymax)

self.axes.grid(True, color='gray')
pylab.setp(self.axes.get_xticklabels(),
visible=True)

self.plot_data.set_xdata(np.arange(len(self.data)))
self.plot_data.set_ydata(np.array(self.data))
self.plot_data2.set_xdata(np.arange(len(self.data2)))
#self.plot_data2.set_xdata(np.array(newdata2))
self.plot_data2.set_ydata(np.array(self.data2))

self.canvas.draw()
def on_redraw_timer(self):
self.draw_plot()
def on_exit(self):
self.close()
def closeEvent(self, event):
for thing in (self.thing1, self.thing2):
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
aw = ApplicationWindow()
aw.show()
sys.exit(app.exec_())

#################################
内嵌图片 1

------------------------------------------------------------------------------
HPCC Systems Open Source Big Data Platform from LexisNexis Risk Solutions
Find What Matters Most in Your Big Data with HPCC Systems
Open Source. Fast. Scalable. Simple. Ideal for Dirty Data.
Leverages Graph Analysis for Fast Processing & Easy Data Exploration
http://p.sf.net/sfu/hpccsystems

_______________________________________________
Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/matplotlib-users

i have read demo before. when not line not move auto, it can . but while my case is need the diagram is dynamic move, i do not know how to modify my code. i have tried many times.but failed.

···

2014-06-21 21:22 GMT+07:00 Eric Firing <efiring@…202…>:

On 2014/06/21, 3:39 PM, 不坏阿峰 wrote:

is there someone can help me ?

Posting a simple, self-contained example as a starting point would

make it more likely that someone would understand your question. Leave

out everything that is irrelevant–I suspect all the gui and threading

code is in that category.

Also, although it is not directly related to your question, please note

that you are using a horrible mixture of backend invocations, and even

if it works now, it will do you no good in the long run.

See the embedding examples: no matplotlib.use, no pylab, one and only

one gui toolkit.

I also suspect the answer to your question is at least partly in one of

the examples of plotting with dates; dates and times are handled

together. Here is one such example:

http://matplotlib.org/examples/pylab_examples/date_demo1.html

Eric

many thanks

2014-06-19 19:36 GMT+07:00 不坏阿峰 <onlydebian@…287…

Dear all
could some expert can help me.
I have modify from one demo. but i do not how to change the x_lable
to time like H:M:S, and can move it.  i have try some way, but failed.
hope some expert can do me a favor.
thanks a lot
######################
# coding=utf-8
import os
import pprint
import random, time
import sys
from PyQt4 import QtGui, QtCore
import time
import datetime
import matplotlib
matplotlib.use('WXAgg')
from matplotlib.figure import Figure
from matplotlib.backends.backend_qt4agg import \
FigureCanvasQTAgg as FigCanvas, \
import numpy as np
import pylab
class DataGen(object):
""" A silly class that generates pseudo-random data for
display in the plot.
"""
def __init__(self, init=50):
self.data = self.init = init
def next(self):
self._recalc_data()
return self.data
def _recalc_data(self):
delta = random.uniform(-0.5, 0.5)
r = random.random()
if r > 0.9:
self.data += delta * 15
elif r > 0.8:
# attraction to the initial value
delta += (0.5 if self.init > self.data else -0.5)
self.data += delta
else:
self.data += delta
class myThing():
def __init__(self):
self.running = True
self.vec = [0]
self.dg = DataGen()
def run(self):
while self.running:
time.sleep(1)
self.vec.append(self.dg.next())
print "Splat"
def getVec(self):
return self.vec
def stop(self):
self.running = False
def __init__(self):
print "initializing myThing..."
def __del__(self):
def getVec(self):
class ApplicationWindow(QtGui.QMainWindow):
""" The main window of the application
"""
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.setAttribute(QtCore.Qt.WA_DeleteOnClose)
self.setWindowTitle('Demo: dynamic matplotlib graph')
self.thing1 = myThing()
self.thing2 = myThing()
self.starttime =  int(time.time())
#self.create_status_bar()
self.create_main_panel()
self.redraw_timer = QtCore.QTimer(self)
QtCore.QObject.connect(self.redraw_timer,
QtCore.SIGNAL("timeout()"), self.on_redraw_timer)
self.redraw_timer.start(4000)
#                         QtCore.Qt.CTRL + QtCore.Qt.Key_S)
QtCore.Qt.CTRL + QtCore.Qt.Key_X)
def create_main_panel(self):
self.panel = QtGui.QFrame(self)
self.setCentralWidget(self.panel)
self.init_plot()
self.canvas = FigCanvas(self.fig)
self.canvas.setMinimumHeight(150)
self.vbox = QtGui.QVBoxLayout()
self.panel.setLayout(self.vbox)
#self.vbox.Fit(self)
self.unit = 20
width, height = self.geometry().width(),
self.geometry().height()
self.show()
def init_plot(self):
self.dpi = 100
self.fig = Figure((5.0, 3.0), dpi=self.dpi)
self.axes.set_axis_bgcolor('black')
self.axes.set_title('Very important random data', size=10)
self.axes.set_xlabel('Time flies like an arrow',size=10)
self.axes.set_ylabel('Random is just random',size=10)
pylab.setp(self.axes.get_xticklabels(), fontsize=8)
pylab.setp(self.axes.get_yticklabels(), fontsize=8)
self.plot_data = self.axes.plot(
self.thing1.getVec(),
linewidth=0.5,
color=(1, 1, 0),
#marker='o',
label="set1",
)[0]
print  self.thing1.getVec(), "<<>>"
self.plot_data2 = self.axes.plot(
self.thing2.getVec(),
linewidth=1,
dashes=[.2, .4],
color=(0, 1, 1),
label="set2",
)[0]
def draw_plot(self):
""" Redraws the plot
"""
self.data = self.thing1.getVec()
self.data2 = self.thing2.getVec()
def do_cal(urdata):
newdata = []
for x in range(len(urdata)):
urtime = x + self.starttime
newdata.append(urtime)
return newdata
xmax = len(self.data) if len(self.data) > 50 else 50
xmin = xmax - 50
min1 = min(self.data)
min2 = min(self.data2)
theMin = min(min1, min2)
ymin = round(theMin, 0) - 1
max1 = max(self.data)
max2 = max(self.data2)
theMax = max(max1, max2)
ymax = round(theMax, 0) + 1
self.axes.set_xbound(lower=xmin, upper=xmax)
self.axes.set_ybound(lower=ymin, upper=ymax)
self.axes.grid(True, color='gray')
pylab.setp(self.axes.get_xticklabels(),
visible=True)
self.plot_data.set_xdata(np.arange(len(self.data)))
self.plot_data.set_ydata(np.array(self.data))
self.plot_data2.set_xdata(np.arange(len(self.data2)))
#self.plot_data2.set_xdata(np.array(newdata2))
self.plot_data2.set_ydata(np.array(self.data2))
self.canvas.draw()
def on_redraw_timer(self):
self.draw_plot()
def on_exit(self):
self.close()
def closeEvent(self, event):
for thing in (self.thing1, self.thing2):
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
aw = ApplicationWindow()
aw.show()
sys.exit(app.exec_())
#################################

HPCC Systems Open Source Big Data Platform from LexisNexis Risk Solutions

Find What Matters Most in Your Big Data with HPCC Systems

Open Source. Fast. Scalable. Simple. Ideal for Dirty Data.

Leverages Graph Analysis for Fast Processing & Easy Data Exploration

http://p.sf.net/sfu/hpccsystems

Matplotlib-users mailing list

Matplotlib-users@lists.sourceforge.net

https://lists.sourceforge.net/lists/listinfo/matplotlib-users

HPCC Systems Open Source Big Data Platform from LexisNexis Risk Solutions

Find What Matters Most in Your Big Data with HPCC Systems

Open Source. Fast. Scalable. Simple. Ideal for Dirty Data.

Leverages Graph Analysis for Fast Processing & Easy Data Exploration

http://p.sf.net/sfu/hpccsystems

Matplotlib-users mailing list

Matplotlib-users@lists.sourceforge.net

https://lists.sourceforge.net/lists/listinfo/matplotlib-users