Displaying 3 results from an estimated 3 matches for "zcta".
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zcat
2007 Jun 28
2
sampling question
...in locating a script to implement a sampling scheme
that would basically make it more likely that a particular observation
is chosen based on a weight associated with the observation. I am
trying to select a sample of ~30 census blocks from each ZIP code area
based on the proportion of women in a ZCTA living in a particular
block. I want to make it more likely that a block will be chosen if
the proportion of women in a patient's age group in a particular block
is high. Any ideas are appreciated!
2010 Sep 08
1
Aggregating data from two data frames
Dear all,
I'm working with two data frames.
The first frame (agg_data) consists of two columns. agg_data[,1] is a unique
ID for each row and agg_data[,2] contains a continuous variable.
The second data frame (geo_data) consists of several columns. One of these
columns (geo_data$ZCTA) corresponds to the unique ID in the first data
frame. The problem is that only a subset of the unique ID present in the
first data frame also appears in the second data fame.
What I would like to do is to add another column to the second data frame
(geo_data) that includes the value of the contin...
2006 Jul 11
18
Zip Code Ranges
Does anyone have any recommendations for working with zip code distance
ranges? I need to calculate the distances between US zip codes.
Thanks!
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