Labs > Lab 3: Visualizing the Social Geography of Irish New York
For this lab, you'll need TileMill and the following CSV files:
A file consisting of Irish-born persons only whose literacy was recorded in the 1880 10% sample and whose household lat-long can be identified.
The LIT (literacy) codes are 2 = can't read, can write; 3 = can't write, can read; and 4 = can read, can write. Total: 27,722 records
A file consisting of all Irish-born domestic servants (OCC=29) from the 1880 10% sample whose household lat-long can be identified.
The file contains a number of familiar variables, including RELATE, BPL, OCC. Total: 3,606 records
A file consisting of all Irish-born persons from the 1880 10% sample whose children were all American-born. The household locations of these individuals, where findable, have been included.
There are two key variables here: ELDCH, the age in years of the oldest child in the family, and a constructed variable, LDATEIMM, that consists of the value of ELDCH substracted from the year 1880. Since the date of the eldest child (who was American-born) tells us the latest date at which the Irish-born person arrived (they had to be living in the U.S. by the time of the birth of their eldest), LDATEIMM tells us the year of the latest arrival of that immigrant. Total: 13,023 records
You will also need to make use of Color Brewer to create useful color choices in displaying your map. As in class, set your map limits to the following (options are available in TileMill's map settings menu, found by clicking on the wrench icon in the upper righthand corner of an open map):
Zoom: 11 to 15 only
Center: -73.9946, 40.6978, 11
MapBox layer: nmarw49.hkgk92o0
Remember that to activate the MapBox layer option, you need to activate the tilemill-reference-layer plugin. Plugin options are available from the top-left main menu. It takes a while for plugins to load, so if the plugins pages "hangs," give it time and then click "Install" for the tilemill-refence-layer plugin.
What you will turn in: You will create three maps, each with one layer. Once you have your csv table imported and your carto code set, you can export the map by selecting the "Export Option" on the top right. Select PDF and save them to your computer. You will also need a single answer sheet with your styling code, each clearly identified as to which map they refer to.