loops

问题 Sorry for the inexperience, I'm a beginning coder in R For example: If I were to make a FOR loop by chance and I have a collection of integers 1 to 100 (1:100), what would be the proper format to ensure that would print the numbers that are divisible by another number. In this case, 5 being the number divisible. I hear that using modulo would help in this instance %% This is what I think I should have. For (x in 1:100) { x%%5 == y } print(y) 回答1: for (x in 1:100) { if (x%%5 == 0) { print(x) }

问题 While printing column and row from an array it's showing blank not exporting any data $inn_table = ""; if ($result['qualification']['dd1'] != "") { $dd1 = explode(",", $result['qualification']['dd1']); } if ($result['qualification']['dd2'] != "") { $dd2 = explode(",", $result['qualification']['dd2']); } for ($i = 0; $i < count($labels); $i++) { if ($result['qualification']['dd1'] != "") { echo '<pre>First'; print_r($dd1); ** //echo arrays** for ($j = 0; $j < count($dd1); $j++) { $temp =

问题 I have two matrix A and B,the first row of matrix A(1,:)=[1 2] refer to the number of row and column matrix B(1,2)=21,now I want to do this work for another rows of matrix A without loops? A=[1 2;2 3;1 3;3 3]; B=[1 21 34;45 65 87;4 55 66]; for i=1:4 d(i,:)=B(A(i,1),A(i,2)) end d =[21; 87;34;66] 回答1: An alternative to sub2ind is d = B(A(:,1)+ (A(:,2)-1)*size(B,1)); 回答2: Use sub2ind to get linear indices of the required values of B and then use these indices to retrieve those values. d = B

问题 I want to improve the way to insert predictors in a regression function: fm <- lm(formula= df$dependent_variable ~ df[,2] + df[,3]+ df[,4], data = df) df = data.frame In this example I put only 4 predictors and 1 dependent_variable. Actually I have 191 predictors. I think I need to a loop script to put all these predictors. Suggestions? 回答1: Here is one possible solution: yname<-"DVnamehere" xnames<-colnames(dat) xnames<-xnames[-which(xnames==yname)] formula<-as.formula(paste(yname,"~",paste

问题 This question already has answers here : Why doesn't nodelist have forEach? (10 answers) Looping through a nodelist JS (1 answer) Closed 8 months ago . I am looking for a best way to iterate through NodeList excluding length. I am using: var foo = document.querySelectorAll('[id^=foo_id]') console.log(foo) Returned NodeList has all the required elements + the last entry of length:. 0: input#foo_id_... 1: input#foo_id_... .................. n: input#foo_id_... length: n+1 I wonder what the most

问题 I have the code below that I would like to run to all of the available excel files in a folder. Ideally, I would like to input the path of the folder into cell C3 in Sheet1 and the macro to apply the code to all of the existing files. The code will simply save the second sheet of each file into a PDF version, it works perfectly standalone. Sample Folder Path: C:\Users\MMMM\Desktop\Project X\ Project II Suggestions on how to approach this? Private Sub CommandButton1_Click() Dim MyFolder As

问题 I want to mapping an a folder to download and extract the folder. This is the way I need to download the folder. DownloadF.exe --net 10.0.0.1 --user XX --id 00 --ver A00X-F1A >> result.txt I have 26 version to mapping, which are A00X-F1A ... A00X-F1Z (the last character is A - Z) If the result.txt contain of this string "folder available". It means the version is correct, then stop the looping or checking other version. I must check the version start from A00X-F1Z, A00X-F1Y, A00X-F1X, ...

问题 I want to mapping an a folder to download and extract the folder. This is the way I need to download the folder. DownloadF.exe --net 10.0.0.1 --user XX --id 00 --ver A00X-F1A >> result.txt I have 26 version to mapping, which are A00X-F1A ... A00X-F1Z (the last character is A - Z) If the result.txt contain of this string "folder available". It means the version is correct, then stop the looping or checking other version. I must check the version start from A00X-F1Z, A00X-F1Y, A00X-F1X, ...

问题 Our assignment is to create a mesh grid, with a cursor(+) that moves(up, down, right, left) apon command. I have the grid and the fuctions done, but i'm having trouble getting my move function's to work, along with the updated grid to show. Example of what I need the code to look like. This is my code: x = y = 0 size = int(input('Enter grid size: ')) print(f'Current location: ({x},{y})') def show_grid(x, y): for i in range(size): for j in range(size): if i == y and j == x: print('+', end=' ')

问题 Our assignment is to create a mesh grid, with a cursor(+) that moves(up, down, right, left) apon command. I have the grid and the fuctions done, but i'm having trouble getting my move function's to work, along with the updated grid to show. Example of what I need the code to look like. This is my code: x = y = 0 size = int(input('Enter grid size: ')) print(f'Current location: ({x},{y})') def show_grid(x, y): for i in range(size): for j in range(size): if i == y and j == x: print('+', end=' ')