Languages used in Alaskan households, 1990-2015

These data show languages spoken in the household for people over the age of 5 in Alaska, in addition to the total population, by community. These data come from census surveys, both from the American Community Survey and the decennial census Population and language use data were originally extracted from IPUMS National Historic Geographic Information Systems website: https://data2.nhgis.org/main (Citation: Steven Manson, Jonathan Schroeder, David Van Riper, and Steven Ruggles. IPUMS National Historical Geographic Information System: Version 12.0 [Database]. Minneapolis: University of Minnesota. 2017. http://doi.org/10.18128/D050.V12.0 ). The file "household_language.csv" is a consolidation of a number of tables downloaded from this system (see methods for more information). The "language.Rmd" file is a script which combines the files by year into a single file. It also cleans up place names (including typographical errors) and uses the USGS place names dataset and the SASAP regions dataset to assign latitude and longitude values and region values to each place in the dataset. Additionally, the "language_vis.Rmd" file is a script that uses this data to visualize Native language use by community, displayed in the "language_vis.html" file.

本数据集按社区划分，展示了美国阿拉斯加州5岁以上人群的家庭使用语言情况，同时包含对应社区的总人口数据。
本数据集的数据源自两项普查调查：美国社区调查（American Community Survey）与十年一次的人口普查。人口与语言使用数据最初提取自IPUMS国家历史地理信息系统（IPUMS National Historic Geographic Information Systems）官网：https://data2.nhgis.org/main。
【引用信息】：Steven Manson、Jonathan Schroeder、David Van Riper 与 Steven Ruggles. IPUMS国家历史地理信息系统：版本12.0 [数据库]. 明尼阿波利斯：明尼苏达大学. 2017. http://doi.org/10.18128/D050.V12.0。
本数据集中的"household_language.csv"文件为从该系统下载的多张表格的整合文件（详细说明参见方法部分）。
"language.Rmd"文件为按年份将多个文件整合为单个文件的脚本。该脚本同时会清理地名数据（包括排版错误），并借助美国地质调查局（United States Geological Survey）地名数据集与SASAP区域数据集，为数据集中的每个地点分配经纬度坐标与区域归属。
此外，"language_vis.Rmd"文件为使用本数据集按社区可视化原住民语言使用情况的脚本，最终可视化结果展示于"language_vis.html"文件中。