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Shiny & networkD3 responding to node click 繁体
2017年05月09 - I am trying to use networkD3 and shiny to visualize some data. I would like to have an action happen when a node in a graph is clicked. I am using a d

R: How to avoid overlapping labels 繁体
2017年11月23 - I have created a graphic with ggplot2 and some labels are overlapping. I want to show all labels without overlapping. Is that possible? How? I know th

“Variable context not set” error with mutate_at, dplyr version >= 0.7 繁体
2017年06月25 - This code used to work, as of about May 1 2017 (dplyr version 0.5.0). With dplyr version 0.7 it fails with Error: Variable context not set. I couldn't

R: factor to character does not work 繁体
2018年04月12 - I just do not understand why my data frame keeps being a factor even if I try to change it to a character. 我只是不明白为什么我的数据框仍然是一个因素,即使我尝试将其更改为一个字符。 Here

data.table: create new columns with lapply 繁体
2013年04月07 - i have a data.table and want to apply a function to on each subset of a row. Normaly one would do as follows: DT[, lapply(.SD, function), by = y] 我有一个

Large Matrices in R: long vectors not supported yet 繁体
2014年06月20 - I am running 64 bit R 3.1 in a 64bit Ubuntu environment with 400GB of RAM, and I am encountering a strange limitation when dealing with large matrices

Applying selecting dataset and filtering in R shiny 繁体
2018年01月30 - I've this problem. I'm starting to learn shiny and I can't figure out how to use a filter on a dataset derived from another shiny selector. In this pa

One way ANOVA: post-hoc comparison “adding letters to graph” 繁体
2014年12月13 - I am working on a project for one of my classes and cannot figure out how to obtain the letters for treatment comparisons after using the tukeyHSD pos

Summing over rows containing particular strings in R 繁体
2015年01月30 - I have a dataframe where the first column contains names of campaigns. I need to sum up all rows where the campaign names contain certain strings (it

Shaded areas not shown in plotly object 繁体
2017年09月04 - I have built a ggplot2 object that has shaded areas. Unfortunately I cannot get these shaded areas to show up in plotly, when applying ggplotly to the


 
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