vector

问题 I posted a question some days ago and while the solution seems to be working on RStudio in Windows (but takes forever and sometimes spits out no results), I keep getting an error of long vectors not supported when I run the same code with 30 CPUs on a HPC. Any ideas why? Here is a sample of the data: > head(forfuzzy) # A tibble: 6 x 3 grantee_name grantee_city grantee_state <chr> <chr> <chr> 1 (ICS)2 MAINE CHAPTER CLEARWATER FL 2 (SUFFOLK COUNTY) VANDERBILT~ CENTERPORT NY 3 1 VOICE TREKKING A

问题 My situation is: I get a 1000*2 matrix and a 1000*1 vector. And the row i in the matrix is mapped to the element i in the vector. And the elements in the vector are all integer. Now I want to sort the elements in the vector from low to high. And I want to get a new matrix with the sequence of the new vector. And the mapping relationships are equal to the original situation. How to do this in Matlab? Thanks! 回答1: Use sortrows: First concat your vector to your matrix: M2 = [V, M]; Then sort

问题 My situation is: I get a 1000*2 matrix and a 1000*1 vector. And the row i in the matrix is mapped to the element i in the vector. And the elements in the vector are all integer. Now I want to sort the elements in the vector from low to high. And I want to get a new matrix with the sequence of the new vector. And the mapping relationships are equal to the original situation. How to do this in Matlab? Thanks! 回答1: Use sortrows: First concat your vector to your matrix: M2 = [V, M]; Then sort

问题 My situation is: I get a 1000*2 matrix and a 1000*1 vector. And the row i in the matrix is mapped to the element i in the vector. And the elements in the vector are all integer. Now I want to sort the elements in the vector from low to high. And I want to get a new matrix with the sequence of the new vector. And the mapping relationships are equal to the original situation. How to do this in Matlab? Thanks! 回答1: Use sortrows: First concat your vector to your matrix: M2 = [V, M]; Then sort

问题 I have a vector of distances which I get from some other procedure and want to convert it to a dist object in the R language . Below I give an example how such a vector looks like : distVector is computed in the same way said other procedure computes the distance vector. Ideally, I would like to transform this vector into a distance matrix ( dist object) without wasting resources. I think I could just transform it to a matrix by copying it as upper triangular and lower triangular matrix,

问题 I have a vector of distances which I get from some other procedure and want to convert it to a dist object in the R language . Below I give an example how such a vector looks like : distVector is computed in the same way said other procedure computes the distance vector. Ideally, I would like to transform this vector into a distance matrix ( dist object) without wasting resources. I think I could just transform it to a matrix by copying it as upper triangular and lower triangular matrix,

问题 I am trying to extract a vector of values from a data frame based on a vector of row numbers; df<-iris x<-c(1,5,15,8,7,2) I want the corresponding Species of the row numbers listed in the vector x. I have tried something like df$Species[x,] and df$Species[list(x),] to no avail. I am sure the answer is something really simple but I just can't see it! Thanks in advance 回答1: Try df[x,]$Species or df[,"Species"][x] or indeed df[x,"Species"] 来源： https://stackoverflow.com/questions/17439396/extract

问题 This question already has answers here : Print a vector of vectors (2 answers) Closed 5 months ago . I am trying to assign and print vector<vector<int>> dynamically , However i cannot figure out how to do this i am stuck here is my program #include<iostream> #include<vector> #include<string> using namespace std; class A { public: vector<int> getVector(int s) { vector <int> A(s); for (int j = 0; j < s; j++) { A.push_back(j); } return A; } }; int main() { A obj; int n = 5; vector<vector<int>> A

问题 I have a class Employees . I'm trying to make the user insert and delete an employee but it's not working. The size of the vectors should be 500. class Employees{ public: int maxx = 500; vector<string> Surname; vector<string> FirstName; vector<string> birthdate; int vacation[500]; public: Employees() : Surname(500) {} }; This is the function that inserts, but printing elements of the vectors is not working at all: void Process(Employees ZZ){ string dateyear; string datemonth; string dateday;

问题 I need to read in lines from a given text file into a vector of a class of strings. I have this so far but I cannot get them into the vector. I am trying to create a while loop to read in each line of the text file input by the user. I've modified it from the last time, but all it does is read in one thing at a time, splitting Las and Vegas. I also need to push the information from my text file into my Flight vector. #include "sort.h" #include "flight.h" #include "std_lib_facilities_4.h"