speed

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I tried to find out the speed of User, while user is moving with device. Here, I followed one link with sample code. i.e: Here SpeedDemo. The problem is, by using location.getSpeed() method, we are finding the speed. So, for that I changed the location values in device, but every time the value of the location.getspeed() return '0' only. Why it happen, even changing the location itself. Can any one known about this? 回答1: You have to track location Updates, and when the method onLocationChanged(Location location) triggers, you can call

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: is there a way to calculate the curvature in a specific point having a smooth.spline curve (or similar)in R? The curve is calculate from a set of x,y points. Thank you in advance. 回答1: This one is actually very easy if you know that there is a predict() method for objects created by smooth.spline() and that this method has an argument deriv which allows you to predict a given derivative (in your case the second derivative is required) instead of points on the spline. cars.spl <- with(cars, smooth.spline(speed, dist, df = 3)) with(cars,

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm using Unity3D and I created simple distance, speed and acceleration calculator using latitude and longitude of last position. I'm calculating last distance, speed and acceleration in each GPS update (approximately once per second). But sometimes (2-3 second interval) latitude and longitude values changes rapidly (in clear weather and no obstacles). That's why speed and acceleration values gets unreal results. For example, at stable 40 km/h speed, speed value becomes 60 km/h and returns to 40 km/h within 2-3 second. I'm here to ask how

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: i am having a map application.when a person travels from current location to particular location i want to calculate the distance covered by the person, the current speed of the person ,average speed of the person .can anybody help me in solving this problem.please provide me any sloution to solve this problem.Thanks 回答1: Improve your acceptance rate. Use following methods to get distance in miles or kilometers. You have to declare timer in your header file synthesize it. //SpeedViewController.h #import #import #import @interface

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm working on a project to transfer data between a Bluetooth device (TI CC2650) and android. To do this, it is necessary to perform a reading of the GATT characteristic at a speed of at least 24 kbps. The Bluetooth Low Energy specification allows this transfer rate. I work in Android Studio and use standard libraries for BLE offered by the studio. When requesting a read from a master device, the characteristics of a slave device using the mBluetoothLeService.readCustomCharacteristic () or mBluetoothLeService.readCharacteristic () command is

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I've encountered some performance problems thus I want to speed up those running-slow scripts. But I have no more ideas on how to speed up them. Because I found I was often blocked with the indices. I found the abstract thinking is very difficult for me. The script is tic , n = 1000 ; d = 500 ; X = rand ( n , d ); R = rand ( n , n ); F = zeros ( d , d ); for i = 1 : n for j = 1 : n F = F + R ( i , j )* (( X ( i ,:)- X ( j ,:)) ' * (X(i,:)-X(j,:))); end end toc 回答1: Discussion & Solution Codes Few approaches with bsxfun could be

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am writing an application that reports attributes of network devices on the local machine. I need the mac address, mtu, link speed and a few others. I'm using udev for this. I've already figured out how to get the mac address and mtu, but not how to get the link speed. I can get it with ethtool from the terminal, but I need a way to get it programmatically. Does anyone know how I can get the link speed attribute with udev or another library? 回答1: You need to use the SIOCETHTOOL ioctl() call. There's a nice introduction to ioctl/SIOCETHTOOL

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Im trying to make a attribute characteristic randomiser for my nephews board game and I'm trying to write the attributes to an external file so that he can use them later. when i am trying to write to the file it comes up with the error speedE = str('Speed -', str(speed)) TypeError: decoding str is not supported my code is adding the calculated attribute to the name of the attribute. I.E. ('Strength - ', strengthE) my code is ... import random char1 = open('Character1.txt', 'w') strength = 10 strength += int(random.randint(1, 12) / random

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm having some trouble adding a value taken from an Entry box and adding it to an existing number. In this case, I want the value of the "change speed" box to be added to the robots current speed. When run, my code produces an error: TypeError: unsupported operand type(s) for +=: 'int' and 'IntVar'. Below is the code that produces the entry box: change_speed_entry = ttk.Entry(main_frame, width=5) # Entry box for linear speed change_speed_entry.grid() data = tkinter.IntVar() change_speed_entry['textvariable'] = data And next is where I try

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I want to develop an iPhone app, that will enable user to track his speed and speed limit of street/road. Is there any google map API that gives us this information? if not, can anybody tell me any alternate 3rd party solution. Thanx in advance. 回答1: I don't think such an API exists at the moment. 回答2: Now google has started providing optional speed limit data. See Roads Web Service section at following link. https://developers.google.com/maps/licensing 回答3: Google does now provide a Roads API, in which you can query Speed Limit