如何安装奥尔森数据库？

Question

试图使用read_csv函数读取csv：

library(readr)
read_csv("myfile.csv")

返回警告：

Warning message in OlsonNames():
“no Olson database found”

然后是错误：

Error: Unknown TZ UTC
Traceback:

1. read_csv("myfile.csv")
2. read_delimited(file, tokenizer, col_names = col_names, col_types = col_types, 
 .     locale = locale, skip = skip, comment = comment, n_max = n_max, 
 .     guess_max = guess_max, progress = progress)
3. col_spec_standardise(data, skip = skip, comment = comment, guess_max = guess_max, 
 .     col_names = col_names, col_types = col_types, tokenizer = tokenizer, 
 .     locale = locale)
4. guess_header(ds_header, tokenizer, locale)
5. guess_header_(datasource, tokenizer, locale)
6. default_locale()
7. locale()
8. check_tz(tz)
9. stop("Unknown TZ ", x, call. = FALSE)

我在returned中没有收到此错误，所以假设Olson数据库是与returned一起预先安装的？

我如何在R木星笔记本上安装奥尔森数据库，以便read_csv按预期运行？

最新情况：

我在木星笔记本上使用OlsonNames()独立地调用相同的错误。我运行的木星笔记本是在https://github.com/jupyter/docker-stacks/tree/master/r-notebook指定的容器

更新2：

由docker文件指定的R包：

# R packages
RUN conda install --quiet --yes \
    'r-base=3.3.2' \
    'r-irkernel=0.7*' \
    'r-plyr=1.8*' \
    'r-devtools=1.12*' \
    'r-tidyverse=1.0*' \
    'r-shiny=0.14*' \
    'r-rmarkdown=1.2*' \
    'r-forecast=7.3*' \
    'r-rsqlite=1.1*' \
    'r-reshape2=1.4*' \
    'r-nycflights13=0.2*' \
    'r-caret=6.0*' \
    'r-rcurl=1.95*' \
    'r-crayon=1.3*' \
    'r-randomforest=4.6*' && \
    conda clean -tipsy && \
    fix-permissions $CONDA_DIR

操作系统: Ubuntu Core 14.04

R版本：

jovyan@6cf5af1246ff:~$ R -- version
WARNING: unknown option '--'

ARGUMENT 'version' __ignored__


R version 3.3.2 (2016-10-31) -- "Sincere Pumpkin Patch"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

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Type 'contributors()' for more information and
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[Previously saved workspace restored]

>

Answer 1

OlsonNames函数非常简单。在3.3.2中，它查找这些位置的时区名称：

     tzdirs <- c(Sys.getenv("TZDIR"), file.path(R.home("share"), 
        "zoneinfo"), "/usr/share/zoneinfo", "/usr/share/lib/zoneinfo", 
        "/usr/lib/zoneinfo", "/usr/local/etc/zoneinfo", "/etc/zoneinfo", 
        "/usr/etc/zoneinfo")

您需要确保列出的目录中有一个可用。如果系统上没有硬编码的，请将TZDIR设置为指向副本。