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Extend an irregular sequence and add zeros to missing values 繁体
2017年01月12 - I have a data frame with a sequence in 'col1' and values in 'col2': 我有一个数据框,其序列在'col1'中,值在'col2'中:

Adding expressions to facet labeller in ggplot 2 2.0 繁体
2016年01月24 - I need to replace one facet wrap label with a complicated expression. However, i cannot get the func

how to plot multiplot (two columns plots) per page in a single pdf? 繁体
2016年03月22 - I am using ggplot and ggplot.multiplot function to plot multiplots (2 columns plots) per page but I

Calculate inverse of a non-square matrix in R 繁体
2014年01月26 - I'm pretty new to the R language and trying to find out how you can calculate the inverse of a matrix that isn't square. (non-square? irregular? I'm unsure of the correct terminology). 我是R语言的新手,想知道如何计

Remove factors from boxplot that have no data 繁体
2014年10月28 - I have a data frame with two factors: Peel - either "Standard" or "Delay" and Wafer - a number of a

How keep the only portions of the word/string withing two delimiter? 繁体
2015年05月08 - //@john:awesome play @user2:great....//@user3:wow%oke"kakaa" @user5:aha@user3:hello @user6:helloow @

jupyter-client has to be installed but “jupyter kernelspec --version” exited with code 127 繁体
2017年05月18 - I have already installed Jupyter notebook in my ubuntu 16.04 machine. In jupyter notebook there is by default python installed. Now I want to use R from jupyter notebook. 我已经在我的ubuntu 16.04机器上安装了Jupy

What is the idiomatic way to check and document function preconditions and postconditions in R? 繁体
2012年05月04 - What is the idiomatic way to check and document function preconditions and postconditions in R? I would consider Eiffel's built in require and ensure constructs or D's in and out blocks state of the a

Plot with two Y axes : confidence intervals 繁体
2013年06月11 - I am trying to plot several points with error bars, with two y axes. However at every call of the pl

geom_text not properly positioned when using position_dodge(preserve=“single”) in bar plot 繁体
2018年08月13 - With the code below the labelling in facet bB is not correctly positioned. The problem seems to orig


 
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