mean

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'm trying to think of some code that will allow me to search through my ArrayList and detect any values outside the common range of "good values." Example: 100 105 102 13 104 22 101 How would I be able to write the code to detect that (in this case) 13 and 22 don't fall within the "good values" of around 100? 回答1: There are several criteria for detecting outliers. The simplest ones, like Chauvenet's criterion , use the mean and standard deviation calculated from the sample to determine a "normal" range for values. Any value

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: The following code produces bar plots with standard error bars using Hmisc, ddply and ggplot: means_se However, implementing the above using helper functions such as mean_sdl seems much better. For example the following code produces a plot with 95% CI error bars: ggplot(mtcars, aes(cyl, qsec)) + stat_summary(fun.y = mean, geom = "bar") + stat_summary(fun.data = mean_sdl, geom = "errorbar") My question is how to use the stat_summary implementation for standard error bars. The problem is that to calculate SE you need the number of

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 have a Python script that imports a large CSV file and then counts the number of occurrences of each word in the file, then exports the counts to another CSV file. But what is happening is that once that counting part is finished and the exporting begins it says Killed in the terminial. I don't think this is a memory problem (if it was I assume I would be getting a memory error and not Killed ). Could it be that the process is taking too long? If so, is there a way to extend the time-out period so I can avoid this? Here is the code: csv

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: My assignment asks me to access a test.txt document, so the file name has to be hard coded to my C drive. I have no idea what hardcoding means. Can somebody please help me with this? 回答1: "hard coding" means putting something into your source code. If you are not hard coding, then you do something like prompting the user for the data, or allow the user to put the data on the command line, or something like that. So, to hard code the location of the file as being on the C: drive, you would just put the pathname of the file all together in

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 have a numpy array with a shape of: ( 11L , 5L , 5L ) I want to calculate the mean over the 25 elements of each 'slice' of the array [0, :, :], [1, :, :] etc, returning 11 values. It seems silly, but I can't work out how to do this. I've thought the mean(axis=x) function would do this, but I've tried all possible combinations of axis and none of them give me the result I want. I can obviously do this using a for loop and slicing, but surely there is a better way? 回答1: Use a tuple for axis : >>> a = np . arange ( 11 * 5 * 5 ).

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 trying to plot a simple scatter plot for 3 groups, overlaying a segment indicating the mean for each group and labelling the groups. I have managed to get a scatter plot with error bars, but I would only like a segment indicating where the mean is. I also cannot seem to be getting the group labelling right. To get the summary statistics I am using the function "summarySE" from this page . Is there any simpler way to do this, and to get a segment instead of a point for the mean? I really appreciate your help! library(ggplot2) library

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 know what the apple touch icon is, and I have seen an apple desktop before, so I can imagine what it would look like. I also know how to add an apple touch icon to my site. But here's the burning question: I keep getting (failed) requests for this touch icon... So what does that mean? Was an apple user simply accessing the site? Were they bookmarking it? What is the action from an apple machine that triggers the request for the touch icon? 回答1: When somebody using an iOS device visits your web-page and decides to "bookmark" your page by

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: 0000 0109 1000 0001 6742 0020 e900 800c 3200 0001 68ce 3c80 0000 0001 6588 801a As far as I know, 0000 01 is the start prefix code to identify a NAL Unit. What does "09 .... " mean? Is it the header type byte? 回答1: 0x000001 is the NAL start prefix code (it can also be 0x00000001, depends on the encoder implementation). 0x09 is 0b00001001, which means F=0, NRI = 0, and type is 0b01001. That particular type is an access unit delimiter. Notice that it is immediately followed by another NAL unit defined by 0x67, which is a NAL type of 7, which

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 have to implement a method that writes a byte to an ostream object. Let's just called this ostream object strobj . I also have a bit buffer used to store a byte of data, let's call it: char &bitter; In my header file, I have this: void writeThisByte(int sumInt); The instructions says that I have to write the "less significant byte" of the int being passed in to an ostream object, i.e. strobj ; However, I am confused on exactly what the least significant byte means. Does this mean you are checking to see whether sumInt == 1 ? And if it 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): 问题: I just downloaded a css file from this website and it contains properties such as -webkit-transform and -moz-transform . What does the dash mean and under what circumstances is it required? For the nity grity does the phrase "vendor prefix" refer to the - or the content between the - and - (exuding the - and -) or the content between the - and - (including the - themselves)? In other words does vender prefix refer to the dash itself or only the content between the dashes or the dashes with the content between them? 回答1: -webkit- and -moz-