【发布时间】：2018-09-17 06:18:54
【问题描述】：
我编写了这段代码（如下）来访问“tidycensus”包中的人口普查数据，一切正常运行了大约 7 天。代码没有任何变化，由于某种原因，有一天代码停止了工作。我得到的错误是：
未提供编码：默认为 UTF-8。
错误：词法错误：json 文本中的字符无效。<html> <head> <titl
（就在这里）------^
我正在 Mac Book Air - Mac OS Sierra 10.12.6 上运行最新版本的 R 和 Rstudio（截至 2018 年 9 月 12 日，这些是 R 3.5.1 和 R studio 1.1.456）。请记住，我删除了 API 密钥，因此要测试代码，您需要在此处获取一个：https://api.census.gov/data/key_signup.html。
# load the required packages
library(tidycensus)
library(tidyverse)
library(dplyr)
library(sp)
library(spatialEco)
library(rgdal)
library(rgeos)
library(tigris)
library(readr)
library(reshape)
### PART 1: retrieve the Census API data ###
# load the packman package (package management)
if(!require(pacman)){install.packages("pacman");
library(pacman)}
# load the required pacakges
p_load(ggplot2, tidycensus, dplyr)
#input the API Key
#acs_key <- census_api_key("INSERT CENSUS KEY HERE", install = TRUE)
acs_key <- Sys.getenv("INSERT CENSUS KEY HERE")
# search for variables
# The function takes two required arguments:
# the year of the Census or endyear of the ACS sample, and the dataset - one of "sf1", "sf3", or "acs5"
v15 <- load_variables(2016, "acs5", cache = TRUE)
# store the variable names to a vector
# vul_vars <- c("B01003_001E","B02001_002E","B02001_003E","B02001_004E","B02001_005E","B02001_006E","B02001_007E","B02001_008E","B03002_012E","B01001_002E",
# "B01001_026E","B01002_001E","B01002_002E","B01002_003E","B20002_001E","B20002_002E","B20002_003E","B08135_001E","B08006_001E","B08006_002E",
# "B08006_003E","B08006_004E","B08006_008E","B08006_014E","B08006_015E","B08006_016E","B08006_018E","B08006_019E","B08006_020E","B08006_021E",
# "B08006_025E","B08006_031E","B08006_032E","B08006_033E","B08006_035E","B08006_036E","B08006_037E","B08006_038E","B08006_042E","B08006_048E",
# "B08006_049E","B08006_050E","B08121_001E","B08121_002E","B08121_003E","B08121_004E","B08121_005E","B08121_006E","B09008_002E","B09008_004E",
# "B09008_005E","B09010_002E","B09010_003E","B09010_004E","B09010_005E","B09010_006E","B09010_007E","B09019_002E","B09019_003E","B09019_005E",
# "B09019_006E","B09019_007E","B09019_008E","B09019_024E","B09019_038E","B15003_002E","B15003_016E","B15003_017E","B15003_018E","B15003_020E",
# "B15003_022E","B15003_023E","B15003_025E","B16001_002E","B16001_002E","B16001_002E","B23025_004E","B23025_005E","B17020_002E","B08201_002E",
# "B08201_002E","B19013_001E","B19013A_001E","B19013B_001E")
vul_vars <- c("B01003_001","B02001_002","B02001_003","B02001_004","B02001_005","B02001_006","B02001_007","B02001_008","B03002_012","B01001_002",
"B01001_026","B01002_001","B01002_002","B01002_003","B20002_001","B20002_002","B20002_003","B08135_001","B08006_001","B08006_002",
"B08006_003","B08006_004","B08006_008","B08006_014","B08006_015","B08006_016","B08006_018","B08006_019","B08006_020","B08006_021",
"B08006_025","B08006_031","B08006_032","B08006_033","B08006_035","B08006_036","B08006_037","B08006_038","B08006_042","B08006_048",
"B08006_049","B08006_050","B08121_001","B08121_002","B08121_003","B08121_004","B08121_005","B08121_006","B09008_002","B09008_004",
"B09008_005","B09010_002","B09010_003","B09010_004","B09010_005","B09010_006","B09010_007","B09019_002","B09019_003","B09019_005",
"B09019_006","B09019_007","B09019_008","B09019_024","B09019_038","B15003_002","B15003_016","B15003_017","B15003_018","B15003_020",
"B15003_022","B15003_023","B15003_025","B16001_002","B16001_002","B16001_002","B23025_004","B23025_005","B17020_002","B08201_002",
"B08201_002","B19013_001","B19013A_001","B19013B_001")
vul_vars <- unique(vul_vars)
# grab the data for all of the states
vul_acs <-
get_acs(geography = "tract", variables = vul_vars,
state = c("NY","IL","DC"), output = "wide")
【问题讨论】：
-
几件事：我的设置类似，几乎每天都使用
tidycensus工作。您的代码现在可以使用我的 API 密钥为我工作。但是该局一直在使用人们在tidycensusissues 上跟上的 API 来改变东西。 API 也经常崩溃。对于调试，我建议使用更小的 API 调用——更少的变量、更少的状态。 -
谢谢 - 所以我让很多人运行我的代码，他们说这对他们来说很好。你认为是什么问题？ （R 或 R studio 或与我的电脑有关？）
-
您是否尝试重新启动您的 R 会话？ （听起来很傻，但有时这就是问题的全部）
-
是的，我做到了，我什至卸载了 R 和 Rstudio，但没有运气。它突然停止工作似乎很奇怪。