contiguous

问题 Background (Input) The Global Historical Climatology Network has flagged invalid or erroneous data in its collection of weather measurements. After removing these elements, there are swaths of data that no longer have contiguously dated sections. The data resembles: "2007-12-01";14 -- Start of December "2007-12-29";8 "2007-12-30";11 "2007-12-31";7 "2008-01-01";8 -- Start of January "2008-01-02";12 "2008-01-29";0 "2008-01-31";7 "2008-02-01";4 -- Start of February ... entire month is complete .

问题 I am using MPI for solving PDE. For this, I breakdown the 2D domain into different cells (size of each of these cells is " xcell,ycell " with xcell = size_x_domain/(number of X subdomains) and ycell = size_y_domain/(number of Y subdomains) . So, I am running the code with number of processes = (number of X subdomains)*(number of Y subdomains) The gain relatively to sequential version is that I communicate between each process representing the sub-domains. Here a figure illustrating my

问题 Say I passed the address of the 2d array to a function along with its row and column of the 2d array. The function will treat the address of the 2d array as 1d array. (eg. int matrix[] ) If i execute below code: int** arr; arr = new int*[row]; for ( int i = 0; i < row; i++ ) { arr[i] = new int[column]; } Hypothetically, I think in a multi-threaded system, this may not allocate contiguous memory for the 2d array. Am I correct? However, I think in a single threaded system, this will allocate

问题 This question already has answers here : Sequence length encoding using R (6 answers) Closed 6 years ago . This is a duplicate question to this, except for R rather than Python. I'd like to identify groups of contiguous (some people call them continuous) integers in a list, where duplicate entries are treated as existing within the same range. Therefore: myfunc(c(2, 3, 4, 4, 5, 12, 13, 14, 15, 16, 17, 17, 20)) returns: min max 2 5 12 17 20 20 Although any output format would be fine. My

问题 We have a chat system that generates multiple event logs per second sometimes for every event during a chat. The issue is that these consume a massive amount of data storage (which is very expensive on that platform) and we'd like to streamline what we actually store and delete things that really aren't necessary. To that end, there's an event type for what position in the queue the chat is. We don't care about each position as long as they are not intervening events for that chat. So we want

问题 Is the memory in std::array contiguous? Is the following valid/good practice? std::array<type1,Num> arr = //initialize value type1 * ptr = &arr[0]; Could I then pass ptr to functions expecting a c-style array? 回答1: Yes, it is contiguous, as it is basically (and actually) a type arr[10]; , but with STL like interface. It also doesn't decay to a pointer on the slightest provocation. You can safely pass &arr[0] to a function expecting a C-style array, that's the design goal of it. To use it with

问题 I want to store elements of multiple types in a single vector, while keeping elements of the same type contiguous . The types are derived from a base class and I expect different types to be implemented throughout the development cycle. For this reason it would help if the process of adding a new type to the list is very straightforward. I can achieve this (to an extent) in the following manner: //header enum TypeID { TypeA_ID, TypeA_ID, TypeA_ID, TypeIDAmount }; vector<TypeA> vectorA; vector

问题 I need to allocate contiguous space for a 3D array. (EDIT:) I GUESS I SHOULD HAVE MADE THIS CLEAR IN THE FIRST PLACE but in the actual production code, I will not know the dimensions of the array until run time. I provided them as constants in my toy code below just to keep things simple. I know the potential problems of insisting on contiguous space, but I just have to have it. I have seen how to do this for a 2D array, but apparently I don't understand how to extend the pattern to 3D. When

问题 when using skimage I get the following error: win = skimage.util.view_as_windows(x, windowSize, windowShift) C:\Program Files\Anaconda2\lib\site-packages\skimage\util\shape.py:247: RuntimeWarning: Cannot provide views on a non-contiguous input array without copying. warn(RuntimeWarning("Cannot provide views on a non-contiguous input " as far I understood this is because x is a non contiguous array. I think I solved the problem adding in my code np.ascontiguousarray as below: win = skimage

问题 I want to pass a string with multiple contiguous spaces as a parameter to a jar file using Windows command prompt called in another java program. The java file is something like this which prints all of its arguments: package src; public class myClass { public static void main(String[] args) { for(int i = 0; i < args.length; i++) { System.out.println("args" + i+ ":" + args[i]); } } } Now, this is how I call the above main method from another java program and print the output: package src;