Author Archives: Jeremiah

New Additions to the Collection, May 22, 2017

The following titles were recently added or updated.

CU Numeric Data Catalog Holdings

New

CU Spatial Data Catalog Holdings

New:

New Additions to the Collection, May 15, 2017

The following titles were recently added or updated.

CU Numeric Data Catalog Holdings

New

Recently updated

CU Spatial Data Catalog Holdings

New:

DSSC Extended Walk-in Hours

We’ve extended our walk-in hours from two hours to four hours per day between March 27th through April 27th, Monday – Thursday.

We’ve also added a calendar listing the type of help you can expect during walk-in hours as well as some of the other activities in the DSSC such as the Open Labs or workshops.

The new hours are as follows, although best to consult the calendar in case of changes. Outside of these hours, you can always request a one-on-one consultation with one of our staff.

Monday 12pm – 4pm: help with R, Stata, SPSS and SAS

Tuesday 12pm – 4pm: help with GIS

Wednesday 12:30pm  – 4:30pm: help with R, Stata, SPSS and SAS

Thursday 12pm – 4pm: help with GIS

Map Club!

Map-Logo-Resized-Small-201606230120Come join us for the launch of Map Club with five fast-paced hack sessions geared toward the rapid acquisition of skills in geospatial technology held in the Lehman Library, room 215.

Led by DSSC Spatial Research Intern, Emily Fuhrman, each session provides an informal and fun opportunity for the exploration of a web-based library or framework. Sessions will be loosely divided into three phases: background and setup, self-paced making, and sharing.

All sessions are 2-4pm.

7/12 → Interactive Mapping with CartoDB.js [RSVP]

7/19 → Interactive Mapping with Kartograph [RSVP]

7/26 → GIS Data Processing with QGIS  [RSVP]

8/2 → Interactive Mapping with Mapzen  [RSVP]

8/9 → Geographic Projections with D3.js  [RSVP]

Digital Centers Intern Showcase, May 5th

Don’t miss the Digital Centers Intern Showcase on May 5 from 12pm – 2pm in the Studio@Butler!DCIP Intern Showcase Slide (2)

This program, held every year, is the chance to see the fruits of the labors of the interns in the Digital Centers Internship Program (bit.ly/digital_intern).

Our interns will share their projects and answer questions about their work and their experiences collaborating with the staff of the Libraries. We at the Digital Centers are very proud of the work that our interns do, and we are excited to share all of their accomplishments with you.

NHGIS Releases Standardized Tables for 2000 & 2010 Census

Comparing Census data from one decade the next can be difficult since boundaries  and variables can change. Trying to figure out those differences can be time consuming and sometimes frustrating. To help make this easier, NHGIS recently released 65 time series tables standardizing 2000 & 2010 100% count variables to the 2010 Census boundaries for ten geographic levels including tracts, block groups and 5 digit zip code tabulation areas (ZCTAs).

The tables are marked with a TS from within the Topic filter

NHGIS topic filter

Available standardized tables are listed in the Time Series Tables tab, and labeled Standardized to 2010 under the Geographic Integration column.

nhgis_tables

More information on time tables produced by the NHGIS can be found in the Data Documentation section, including both the geographically standardized tables as well as nominally integrated tables. The page includes methodology, and a PDF containing the complete list of variables within the time series datasets.

NYC Geocoding

NYC Dept of City Planning offers a few options for geocoding including a stand alone application called Geosupport, which personally, I don’t find the easiest to use, and a Geoclient API. But for geocoding in ArcGIS quickly, or if you have hundreds of thousands, or even millions of addresses I find LION to be the best option. The only problem, as of release 12C, the geodatabase no longer includes the locators for borough & zip. The current version is 15A,

We’ve taken the old locators from 12C and imported them into the latest version which seems to work pretty well. This is available on the spatial data on the internet page, and we generally update this with each new release.

NYC 2010 Tract Boundaries

Map of 2010 Census Tracts

Click for interactive map

There are so many places to get Census boundaries, but often for NYC, the layers from NYC Dept of City Planning BYTES of the Big Apple are the most detailed.

However, these boundaries do not contain fields to join with some of the more popular sources for Census variables, either for the the 2010 Decennial Census or the American Community Survey 5-year estimates.

It doesn’t take too much time to create the various fields, and as you can see in the examples, these are very similar with just a couple minor variations. The boundaries are available in the data catalog.

NYC Planning uses a seven character ID identifying tracts, the first digit is the borough ID and the remaining six are the Census Bureau defined tract ID which is good if joining to the tables created by NYC Planning only.

Example Borough ID Tract ID
1010400 1 010400

The Census Bureau uses an 11 character ID for joining with data from the Census Bureau American FactFinder or Social Explorer

Example State Code County Code Tract ID
36061010400 36 061 010400

NHGIS uses a 14 character ID

Example Prefix State ID County ID Tract ID
G3600610010400 G 360 0610 010400

Infoshare uses a 10 character ID

Example County ID Tract ID
0610104.00 061 0104.00

The 2010 Tract boundaries can be joined with data from

  • The 2010 Decennial Census
  • American Community Survey (ACS) 5-yr estimates
    (except ’05-’09 which uses the 2000 boundaries!)