Description Usage Details Value Examples
Create a Processed Version of the Ames Housing Data
1 2 3 4 5 |
For the processed version, the exact details can be found in
the code of make_ames
but a summary of the differences between
these data sets and ames_raw
is:
All factors are unordered.
PID
and Order
are removed.
Spaces and special characters in column names where changed
to snake case. To be consistent, SalePrice
was changed to
Sale_Price
.
Many factor levels were changed to be more understandable
(e.g. Split_or_Multilevel
instead of 080
)
Many missing values were reset. For example, if the variable
Bsmt_Qual
was missing, this implies that there is no basement
on the property. Instead of a missing value, the value of
Bsmt_Qual
was changed to No_Basement
. Similarly, numeric
data pertaining to basements were set to zero where appropriate
such as variables Bsmt_Full_Bath
and Total_Bsmt_SF
.
Garage_Yr_Blt
contained many missing data and was removed.
Approximate longitude and latitude are included for the properties. Also, note that there are 6 properties with identical geotags. These are units within the same building. For some properties, updated versions of the PID identifiers were found and are replaced with new values.
make_ordinal_ames
is the same as make_ames
but many factor
variables were changed to class ordered
(see below).
The documentation for ames_raw()
contains descriptions of
the columns although, as noted above, the column names in
ames_raw()
are slightly different from the processed
versions.
make_ames_new()
creates a data set of new properties. These were populated
using less data sources than the original and lack a number of the condition
and quality. Both properties were unsold at the time of this writing.
A tibble with the data.
1 2 3 4 5 6 7 | ames <- make_ames()
nrow(ames)
summary(ames$Sale_Price)
ames_ord <- make_ordinal_ames()
ord_vars <- vapply(ames_ord, is.ordered, logical(1))
names(ord_vars)[ord_vars]
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