array

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 can convert a cell array of matrices to matrix: >> C={[1,1]; [2,2]; [3,3]}; >> cell2mat(C) ans = 1 1 2 2 3 3 This is OK. But, I want to convert a cell array including other cell arrays to a matrix: >> C={{1,1}; {2,2}; {3,3}}; >> cell2mat(C) Error using cell2mat (line 53) Cannot support cell arrays containing cell arrays or objects. So, desired output is: >> mycell2mat({{1,1}; {2,2}; {3,3}}) ans = 1 1 2 2 3 3 How to do this? Edit: I want to do same thing for multidimensional ones also: >> mycell2mat({{1,1;1,1}; {2,2;2,2}; {3,3;3,3}}) ans(:,

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: In sys/inotify.h ( inotify.h ), following struct is defined: struct inotify_event { int wd; /* Watch descriptor. */ uint32_t mask; /* Watch mask. */ uint32_t cookie; /* Cookie to synchronize two events. */ uint32_t len; /* Length (including NULs) of name. */ char name __flexarr; /* Name. */ }; I can't find any definitions for __flexarr in the code. Where would I search for it? In an unrelated project I found #define __flexarr [1] which I assume does something similar, but this definition does not make much sense to me (being quite unfamiliar

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 trying to process data obtained from a csv file using csv module in python. there are about 50 columns & 401125 rows in this. I used the following code chunk to put that data into a list csv_file_object = csv.reader(open(r'some_path\Train.csv','rb')) header = csv_file_object.next() data = [] for row in csv_file_object: data.append(row) I can get length of this list using len(data) & it returns 401125. I can even get each individual record by calling list indices. But when I try to get the size of the list by calling np.size(data) (I

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 bit of a problem with my constructor. In my header file I declare: char short_name_[2]; and other variables In my constructor: Territory(std::string name, char short_name[2], Player* owner, char units); void setShortName(char* short_name); inline const char (&getShortName() const)[2] { return short_name_; } In my cpp file: Territory::Territory(std::string name, char short_name[2], Player* owner, char units) : name_(name), short_name_(short_name), owner_(owner), units_(units) { } My error: Territory.cpp: In constructor ‘Territory:

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 trying to iterate an array of values generated with numpy.linspace: slX = numpy.linspace(obsvX, flightX, numSPts) slY = np.linspace(obsvY, flightY, numSPts) for index,point in slX: yPoint = slY[index] arcpy.AddMessage(yPoint) This code worked fine on my office computer, but I sat down this morning to work from home on a different machine and this error came up: File "C:\temp\gssm_arcpy.1.0.3.py", line 147, in AnalyzeSightLine for index,point in slX: TypeError: 'numpy.float64' object is not iterable slX is just an array of floats, and the

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 was wondering how to create a 100 % stacked area chart in matplotlib. At the matplotlib page I couldn't find an example for it. Somebody here can show me how to achieve that? 回答1: A simple way to achieve this is to make sure that for every x-value, the y-values sum to 100. I assume that you have the y-values organized in an array as in the example below, i.e. y = np.array([[17, 19, 5, 16, 22, 20, 9, 31, 39, 8], [46, 18, 37, 27, 29, 6, 5, 23, 22, 5], [15, 46, 33, 36, 11, 13, 39, 17, 49, 17]]) To make sure the column totals are 100, you have

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 the library PHPExcel to read data in an Excel file. The problem I'm having, is that when I use something like: $obj = PHPExcel_IOFactory::load($file); $data = $obj->getActiveSheet()->toArray(null,true,true,true); To load my file and convert its content into an array, I get all the columns and rows of my Excel file in my array even those without any data in them. Is there a method or something in the library PHPExcel to tell it to ignore cells in my Excel sheet that do not contain any data? (Instead of having a bunch of empty

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 getting the following C++ error: array must be initialized with a brace enclosed initializer From this line of C++ int cipher[Array_size][Array_size]; What is the problem here? What does the error mean? Below is the full code: string decryption(string todecrypt) { int cipher[Array_size][Array_size] = 0; string ciphercode = todecrypt.substr(0,3); todecrypt.erase(0,3); decodecipher(ciphercode,cipher); string decrypted = ""; while(todecrypt.length()>0) { string unit_decrypt = todecrypt.substr(0,Array_size); todecrypt.erase(0,Array_size);

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 remember reading somewhere (I think it was in one of Crockford's papers) that using an array literal [] is better than using the new Array(); notation. But I can't really remember any advantages of one over the other. Can anyone please explain to me on why the former is preferred over the latter? Here is one reason I can think of on why [] is better than new Array(); : var Array = function () { }; Overriding the Array object will break code...! Any more reasons? 回答1: Brevity It has less bytes to transfer over the wire, less bytes to

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 2 arrays: var list : Array < Int > = [ 1 , 2 , 3 , 4 , 5 ] var findList : Array < Int > = [ 1 , 3 , 5 ] I want to determine if list Array contains all findList elements. By the way, elements might be String as well or other type. How to do that? I know that Swift provides contains method that works with one item. 回答1: Instead of iterating through arrays and doing filtering yourself, you can use NSSet to do all the work for you. var list : Array < Int > = [ 1 , 2 , 3 , 4 , 5 ] var findList : Array < Int > = [ 1 , 3 , 5 ] let