apply

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apply on dataframe works for one row, but apply over multiple rows fails for that particular row

Apply on dataframe works for one row, but apply over multiple rows fails for that particular row Here\'s an example (row 954 works in isolation):[详细]

2023-02-19 09:51 分类：问答
apply treats numbers as characters

I couldn\'t find a solution for this problem online, as simple as it seems. Here\'s it is: #Construct test dataframe[详细]

2023-02-16 07:28 分类：问答
Is there a R function that applies a function to each pair of columns?

I often need to apply a function to each pair of columns in a dataframe/matrix and return the results in a matrix. Now I always write a loop to do this. For instance, to make a matrix containing the p[详细]

2023-02-15 17:58 分类：问答
How to apply WPF ScrollBar style to a particular listview?

Ok, here is my scrollbar style. <Style x:Key=\"{x:Type ScrollBar}\" TargetType=\"{x:Type ScrollBar}\">[详细]

2023-02-14 10:44 分类：问答
For Loop alternatives for progressive operations

I have to apply regression function progressively to a time series data (vector \"time\" and \"tm\" and I\'m using a For Loop as follow:[详细]

2023-02-13 00:32 分类：问答
Similar method to apply when creating an object

If I want to run a function within another function I can pass in some of the arguments like so: function applyFunc(type) {[详细]

2023-02-10 11:22 分类：问答
How can I generate by-group summary statistics if my grouping variable is a factor?

Suppose I wanted to get some summary statistics on the dataset mtcars (part of base R version 2.12.1).[详细]

2023-02-07 22:07 分类：问答
Core jQuery event modification problem

I am attempting to overwrite a core jQuery event, in this case the keydo开发者_Go百科wn event. My intention is to preventDefault() functionality of Left(37), Up(38), Right(39) and Down(40) to maintain[详细]

2023-02-03 01:21 分类：问答
Calculating percentages in an apply statement (R)

I\'m struggling with something quite simple, but I\'m going around in circles, and just don\'t see where I make an error. I really hope that someone could lend me a handy suggestion, so that I\'m no l[详细]

2023-01-28 05:51 分类：问答
Apply a function to every row of a matrix or a data frame

Suppose I have a n by 2 matrix and a function that takes a 2-vector as one of its arguments. I would like to apply the function to each row of the matrix and get a n-vector. How to do this in R?[详细]

2023-01-25 22:44 分类：问答