python - Real time DataFrame plot -

-

i have pandas dataframe updated in while loop , plot in real time, unfortunately did not how that. samplae code might be:

import numpy np matplotlib import pyplot plt matplotlib import animation import time tm datetime import datetime, date, time import pandas pd  columns = ["a1", "a2", "a3", "a4","a5", "b1", "b2", "b3", "b4", "b5", "prex"] df = pd.dataframe() """plt.ion()""" plt.figure() while not true:      = datetime.now()     adata = 5 * np.random.randn(1,10) + 25.     prex = 1e-10* np.random.randn(1,1) + 1e-10     outcomes = np.append(adata, prex)     ind = [now]     idf = pd.dataframe(np.array([outcomes]), index = ind, columns = columns)     df = df.append(idf)     ax = df.plot(secondary_y=['prex'])      plt.show()     time.sleep(0.5)

but if uncomment """plt.ion()""" many different windows open. otherwise have close window updated plot. suggestions?

you can specify axes plot use instead of creating different axes each time call it. redraw plot in interactive mode can use draw instead of show. 

from matplotlib import animation import time tm datetime import datetime, date, time import pandas pd  columns = ["a1", "a2", "a3", "a4","a5", "b1", "b2", "b3", "b4", "b5", "prex"] df = pd.dataframe() plt.ion() fig = plt.figure() ax = fig.add_subplot(111) # create axes.  while true:      = datetime.now()     adata = 5 * np.random.randn(1,10) + 25.     prex = 1e-10* np.random.randn(1,1) + 1e-10     outcomes = np.append(adata, prex)     ind = [now]     idf = pd.dataframe(np.array([outcomes]), index = ind, columns = columns)     df = df.append(idf)     df.plot(secondary_y=['prex'], ax = ax) # pass axes plot.       plt.draw() # draw instead of show update plot in ion mode.      tm.sleep(0.5)

Comments

Post a Comment

Popular posts from this blog

Java 3D LWJGL collision -

-
i making 3d java game lwjgl library, , wondering how add collision detection, player not go through models. i using obj models. here objloader class, loads models: package renderengine; import java.io.bufferedreader; import java.io.file; import java.io.filenotfoundexception; import java.io.filereader; import java.util.arraylist; import java.util.list; import models.rawmodel; import org.lwjgl.util.vector.vector2f; import org.lwjgl.util.vector.vector3f; public class objloader { public static rawmodel loadobjmodel(string filename, loader loader){ filereader fr = null; try { fr = new filereader(new file("res/"+filename+".obj")); } catch (filenotfoundexception e) { system.err.println("couldn't load file!"); e.printstacktrace(); } bufferedreader reader = new bufferedreader(fr); string line; list<vector3f> vertices = new arraylist<vector3f...
Read more

spring - SubProtocolWebSocketHandler - No handlers -

-
i have ugly error during deploying spring app on jboss. 18:11:16,025 error [org.apache.catalina.core.containerbase.[jboss.web].[default-host].[/consumer]] (msc service thread 1-7) exception sending context initialized event listener instance of class org.springframework.web.context.contextloaderlistener: org.springframework.context.applicationcontextexception: failed start bean 'subprotocolwebsockethandler'; nested exception java.lang.illegalargumentexception: no handlers @ org.springframework.context.support.defaultlifecycleprocessor.dostart(defaultlifecycleprocessor.java:176) [spring-context-4.1.3.release.jar:4.1.3.release] @ org.springframework.context.support.defaultlifecycleprocessor.access$200(defaultlifecycleprocessor.java:51) [spring-context-4.1.3.release.jar:4.1.3.release] @ org.springframework.context.support.defaultlifecycleprocessor$lifecyclegroup.start(defaultlifecycleprocessor.java:346) [spring-context-4.1.3.release.jar:4.1.3.release] @ org.s...
Read more

methods - python can't use function in submodule -

-
my folder structure this: pythonstuff/ program.py modulea/ __init__.py foo.py bar.py here's code bar.py : def hello(): print("hello, world!") here's code program.py : #!/usr/bin/env python3 modulea import bar bar.hello() i run $ python3 program.py somehow error: file "program.py", line 3, in <module> bar.hello() attributeerror: 'module' object has no attribute 'hello' edit: __init__.py file empty. edit2: after trying realized had bar.py in root directory contained hello() method. bar.py in modulea/ directory empty. add it import os __all__ = [] module in os.listdir(os.path.dirname(__file__)): if module != '__init__.py' , module[-3:] == '.py': __all__.append(module[:-3]) the init .py files required make python treat directories containing packages; done prevent directories common name, such string, unintentionally hiding v...
Read more