subset
How to get the information and sort, a subset of elements with only identifiers using XSLT?
I\'m new to XSLT and I can\'t resolve the following problem: I have a xml file like this: <root> <subset>[详细]
2022-12-22 23:57 分类:问答Subsetting in R using OR condition with strings
I have a data frame with about 40 columns, the second column, data[2] contains the name of the company that the rest of the row data describes. However, the names of the companies are different depend[详细]
2022-12-17 18:15 分类:问答Sum of the product over all combinations with one element from each group
Given that I have m non-empty distinct sets (labeled Z[ 1 ], Z[ 2 ], ..., Z[ m ]), I aim to compute the sum of all possible subsets where there is exactly one element from each set. The size of each s[详细]
2022-12-16 19:00 分类:问答Filter data.frame rows by a logical condition
I want to filter rows from a data.frame based on a logical condition. Let\'s suppose that I have data frame like[详细]
2022-12-10 12:37 分类:问答