#  Data 

 



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- [Harvard Data Resources ](/harvard-data-resources) Data housed in the Harvard Geospatial Library, Harvard Map Collection, Graduate School of Design, and various CGA platforms.
- [Public Data Resources](/public-data-resources) The CGA maintains a growing list of public data sources, most of them free.
- [Finding and Protecting Spatial Data](https://gis.harvard.edu/finding-and-protecting-spatial-data) Government data is being deleted by the government. Here are links on where to find it and how to protect it.
- [CGA Geotweet Archive](https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/3NCMB6) The CGA maintains a global big data archive of geo-located tweets containing billions of records dating from 2010 to the present.
- [CGA's Twitter Senttiment Geographic Index (TSGI)](/twitter-sentiment-geographical-index-tsgi-dataset-global-high-frequency-dataset-monitoring) CGA’s has developed Twitter Sentiment Geographical Index (TSGI) dataset: A global high-frequency dataset for monitoring Subjective Well-Being
- [Imagery ](/imagery)  
    Satellite captured remote sensing and other imagery resources.
- [ESRI Data ](/esri-data)  
    ESRI Business Analyst data, Demographic and Lifestyle Data, Esri Data and Maps for ArcGIS, and more



 



 

 See also:- [ Data ](/research/data)