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问题 Here is a simple question about creating a new column conditional on a row duplicate in one column matching criterion in different column. Specifically, if the row is a duplicate in column "pairs", create new column "new" based on rows in column "y" being equal/unequal. In the actual data frame I have even more conditions for other columns but my main issue is with making these conditions dependent on the rows being the same in the "pairs" column. Many thanks! pairs y new 1 1 1 1 0 1 2 1 0 2

问题 I am trying to run a simple bootstrap on the rows of a data frame in r. Here is what I have worked up so far, but I'm hitting a dead end. x1 <- c(1:5) x2 <- c(6:10) y <- runif(5) z <- as.data.frame(rbind(x1, x2, y)) trial <- 10 avg <- rep(0, trial) for(i in 1:trial){ ind <- sample(ncol(z), size = ncol(z), replace = TRUE) z.boot <- z[ind, ] mean[i] <- mean(z.boot) } mean Ideally, what I would like to do is to get a bootstrap weighted mean for the first and second rows with the weights in the

问题 Does anybody know how to add multiple buttons to a table row dynamically in Android? 回答1: You can try this and see if it's what your are looking for. main.xml: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/layout" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <Button android:text="Button" android:id="@+id/button1" android:layout_height="wrap_content"

问题 My NSTableView has variable height rows. The rows correctly resize after an edit of a cell has been completed, and during/after resizing the column/table. The Row also correctly resizes while a user is typing into the text cell. However, the cell itself does NOT resize during editing to match the height of the row. Does anyone have any ideas on this? In this screenshot one end-edit has occurred already (which is why the text area is larger than 1 line) but there is currently enough text in

问题 I want to change this piece of code where indicated to be more dynamic and specific. I would like to use the first row information in each column as a header that substitutes 'numAtts'. That way, the first row would also not be included in the data underneath the @data. Here is my code: # -*- coding: UTF-8 -*- import logging from optparse import OptionParser import sys def main(): LEVELS = {'debug': logging.DEBUG, 'info': logging.INFO, 'warning': logging.WARNING, 'error': logging.ERROR,

问题 I have a folder full of Excel files (ending in .xlsx). There are about 50 of them. Is it possible to iterate through each excel file in the folder and insert a blank row in row 1? I'd hate to have to do this manually. Also, I'd like to add the word "NEW" in Cell A1 for all 50 files. Is this possible with VBA? 回答1: You can create a control workbook in Excel - this will have your macro in it. One possibility is to use the Dir function within a Do loop that will run through all the files in a

问题 I have a query like: SELECT * FROM table GROUP BY sid ORDER BY datestart desc LIMIT 10 which returns the last 10 sid groups. For each of these groups, I need the title column of the row with the lowest datestart value I tried using SELECT *, min(datestart) but that didn't return the row with the smallest datestart value, just the lowest datestart. I need the title from the lowest datestart. (Relevant) Table Structure: CREATE TABLE `table` ( `title` varchar(1000) NOT NULL, `datestart`

问题 On a data grid view there is a blank row with a (*) in it that allows the user to insert a new row of data. Is there a way to put focus on that row using code even though the data grid view has many rows already loaded in it? 回答1: dgv2.CurrentCell = dgv2(0, dgv2.Rows.Count - 1) 来源： https://stackoverflow.com/questions/10641749/datagridview-can-focus-be-placed-on-the-blank-row-with-the-using-code

问题 I am developing a table view. To fill that table i have an array of 75 content. Now i want to show table view like as when first time shown table view then show only 10 row of array and one button whose title is show more. when click on button then show next 10 content of array in table view and in last of table view show two button previous and next. When click on next then again show next 10 content of array and when click on previous then show previous 10 content. Now problem is that what

问题 Our service is able to run SELECT and INSERT queries without any issues on our local and deployed Cassandra instances. However, we are having trouble with the following DELETE query: DELETE FROM config_by_uuid WHERE uuid = record_uuid; Our service is able to successfully delete a record on our local instance, but not on our deployed instance. Note that this behavior is constant for both instances, and that that no errors are being reported on our deployed instance. Notably, when the above