time

问题 I am attempting to get a matplotlib plotting function to be able to produce a graph with the x-axis set as a time axis. However, when I attempt to plot some values against UNIX times, I encounter the error ValueError: year is out of range . What is going wrong and how can it be addressed? import os import time import matplotlib.dates import matplotlib.pyplot import shijian def main(): data = [ [1484611200.0, 844.4333], [1484524800.0, 783.3373], [1484438400.0, 774.194 ], [1484352000.0, 769

问题 I would like to measure the total simulation and initialization time of a system of DAEs. I am interested in the wall-clock time (like the one given in Matlab by the function tic-toc). I noticed in Modelica there are different flags for the simulation time but actually the time I get is very small compared to the time that elapses since I press the simulation button to the end of the simulation (approximately measured with the clock of my phone). I guess this short time is just the time

问题 I would like to measure the total simulation and initialization time of a system of DAEs. I am interested in the wall-clock time (like the one given in Matlab by the function tic-toc). I noticed in Modelica there are different flags for the simulation time but actually the time I get is very small compared to the time that elapses since I press the simulation button to the end of the simulation (approximately measured with the clock of my phone). I guess this short time is just the time

问题 I am currently working on a project and I have an image which I want to show for 3 seconds, and then hide it for the rest of the run and show the main grid. What I tried to do is to put the main grid in a sub grid, with opacity 0 or Visibility = Visibility.Hidden, and implement a stopwatch in the code behind of the public MainWindow() {} Method. When I tried an if Statement: if (stopwatch.ElapsedMilliseconds > 3000) {Change Opacity}, I haven't reached the condition and stacked with the first

问题 On the two systems I've tested (a 32-bit Ubuntu 12.04 server and a 64-bit Ubuntu 13.10 VM), the seconds since the epoch given by time() may differ from gettimeofday()'s. Specifically, though I call time() after calling gettimeofday() , the value returned by time() is sometimes less than the tv_sec value returned by gettimeofday() . This apparently occurs just after the clock rolls over to a new second. This caused bugs in some of my code that expected time()'s and gettimeofday()'s seconds to

问题 This is a really simple question, and it's probably been asked and answered before, but I haven't been able to find anything. Anyway, I need a range/array for 12 hour time, so like 12AM - 11AM, 12PM - 11PM. You probably get the gist of it. Right now I'm trying to do an absurdly complicated method involving mapping AM onto one array, PM onto another one, and then joining the two arrays together. There has to be an easier way to do this. I know about Rails time_select , but I need a different

问题 This is a really simple question, and it's probably been asked and answered before, but I haven't been able to find anything. Anyway, I need a range/array for 12 hour time, so like 12AM - 11AM, 12PM - 11PM. You probably get the gist of it. Right now I'm trying to do an absurdly complicated method involving mapping AM onto one array, PM onto another one, and then joining the two arrays together. There has to be an easier way to do this. I know about Rails time_select , but I need a different

问题 Alright, I want to know how to delay a portion of a program without pausing the entire program. I'm not necessarily good at python so if you could give me a relatively simple answer if possible, that would be great. I want to have a turtle draw a circle on screen every time this function is called, this is what I have: import time from random import randint turtle5 = turtle.Turtle() coinx = randint(-200, 200) coiny = randint(-200, 200) turtle5.pu() turtle5.goto(coinx, coiny) turtle5.pd()

问题 Alright, I want to know how to delay a portion of a program without pausing the entire program. I'm not necessarily good at python so if you could give me a relatively simple answer if possible, that would be great. I want to have a turtle draw a circle on screen every time this function is called, this is what I have: import time from random import randint turtle5 = turtle.Turtle() coinx = randint(-200, 200) coiny = randint(-200, 200) turtle5.pu() turtle5.goto(coinx, coiny) turtle5.pd()

问题 I like to add event duration to a previous record every time a new record gets added. This is what I have ID EventType EventTime EventDuration ------------------------------------- 1 TypeA 10:20 NULL 2 TypeB 09:30 NULL 3 TypeC 08:00 NULL This is what I want to achieve: ID EventType EventTime EventDuration ------------------------------------- 1 TypeA 10:20 00:50 2 TypeB 09:30 01:30 3 TypeC 08:00 ... 4 ... ... When a new records gets added (with ID, EventType and EventTime), the duration of