Create codebook for public and host on readme

[timathomas]

We need to develop a codebook for the typologies output data.

Given there are hundreds of variables, we may want to consider pairing down the dataset to only relevant data. However, it would be nice to have definitions for all of them. @cdietzhartmann could you start working on this and @JuliaGreenberg1 could you help me review this? @cdietzhartmann:

• [x] create excel spreadsheet with a column of the codes from typologies
• [x] create a column of definitions to the right of the variable names based on descriptions from the python and R code.

Below is an example codebook

Codebook

GEOID10:    Census Tract ID
ZIP:    Zip Code ID
HH18:    Number of Infogroup households in 2018
POP18:    Number of people in 2018
HH19:    Number of Infogroup households in 2019
POP19:    Number of people in 2019
OUT1819:    Number of households that moved out of the geography between 2018 and 2019
WITHIN 1819:    Number of households that moved within the geography between 2018 and 2019
TOTAL1819:    Number of households present in the Infogroup data in both 2018 and 2019 (should be used as a denominator for outmigration rate, as HH18 and HH19 include households only present in one year)

[timathomas]

I actually started a markdown file, which would be better than an excel spreadsheet here that we can edit. @cdietzhartmann @JuliaGreenberg1 you can edit the codebook directly by clicking on the little pencil button on the top right of the markdown file.

[timathomas]

@timathomas finish codebook

[timathomas]

done https://github.com/urban-displacement/displacement-typologies/blob/main/data/outputs/typologies/typologies_codebook.md