dplyr
Calculate group mean, sum, or other summary stats. and assign column to original data
I want to calculate mean (or any other summary statistics of length one, e.g. min, max, length, sum) of a numeric variable (\"value\") within each level of a grouping variable (\"grou开发者_开发技巧p\[详细]
2023-03-07 02:45 分类：问答Group dates based on specific number of days in R
I have a DateTime series (see below as an example). I have to assign groups to these dates based on 8 days intervals. Basically, the group should be assigned as per the following rules (for any given[详细]
2022-12-07 22:39 分类：问答Replace NA values in a column with values from another df column if conditions are met
I need to copy values from a column in one dataframe to a column in another if conditions are met. Using the example below, if ID and BirthDate are the same in df1 and df2, AND Week2 is NA then copy t[详细]
2022-12-07 20:38 分类：问答How do I subset and manipulate time series data with lubridate and dplyr in Rstudio?
I have loaded in time series data of creek depth and am needing to calculate total annual values (Oct-April) for each year. The following is what I have tried thus far:[详细]
2022-12-07 20:26 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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