min

I really need help with this one. I have to matrices L1 and L2 , both are (500x3) of size. First of all, I compute the difference of every element of each column of L1 from L2 as follows: lib1 = bsxfun(@minus, L1(:,1)',L2(:,1)); lib1=lib1(:); lib2 = bsxfun(@minus, L1(:,2)',L2(:,2)); lib2=lib2(:); lib3 = bsxfun(@minus, L1(:,3)',L2(:,3)); lib3=lib3(:); LBR = [lib1 lib2 lib3]; The result is this matrix LBR . Then I have a min -problem to solve: [d,p] = min((LBR(:,1) - var1).^2 + (LBR(:,2) - var2).^2 + (LBR(:,3) - var3).^2); Which returns the point p where this min -problem is fulfied. Finally I

I just answered this question with a data.table approach, and was working hard to provide a dplyr equivalent, but failed misserably. There's a simple data frame with numerical values in its columns. I want to get the name of the column with the minimum value using dplyr . Please notice that I'm aware of other methods to solve this problem: at the moment my only interest is in the dplyr approach id <- c(1,2,3,4,5,6,7,8,9,10) x1 <- c(2,4,5,3,6,4,3,6,7,7) x2 <- c(0,1,2,6,7,6,0,8,2,2) x3 <- c(5,3,4,5,8,3,4,2,5,6) DF <- data.frame(id, x1,x2,x3) I tried several variants of: DF %>% select(2:4) %>%

I'm trying to work on a program in C that gets 5 input numbers and then store these in an array. After getting the the 5 numbers, I must be getting the min, max and the average of the MINIMUN AND MAXIMUM numbers inputted and not all of the five. So here's the code that I made. When I get the maximum number, it seems to be working fine. But when it come's to the min, it's still same as the maximum and so I'll be getting a different average. #include <stdio.h> #include <conio.h> int main() { int num[5]; int counter, min, max=0; float average, total; min=num; for(counter=1; counter<=5; counter++)

Closed. This question is off-topic . It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . I have two arrays: int playerSums[9] = { }; string playerNames[9] = { }; I am trying to get the smallest value in the array playerSums and also the array index of this value. Here's what I've tried so far: if (playerNames[index] == "End" || playerNames[index] == "end") { int lowestValue = playerSums[0]; for (i = 1; i < sizeof(playerSums) / sizeof(playerSums[0]); i++) { if (playerSums[i] < lowestValue ||

I have a PL/SQL table with two columns: log_date (DATE) and value (FLOAT). The data is very fine-grained, the difference between log_dates could be a few milliseconds. The value changes over time. I want to find, using SQL, the maximum and minimum amount of time between log_date s it takes for value to increase. Edit: Example log_date | value ------------------- 15:00 | 10 15:01 | 10 15:02 | 11 15:03 | 11 15:04 | 11 15:05 | 11 15:06 | 12 Between 15:00 and 15:02 value increased BUT it also increased between 15:03 and 15:06 which took longer, and so I want a query that would return (in this case