typos (#1403)
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@ -291,7 +291,7 @@ df |>
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How does the reshaping work?
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How does the reshaping work?
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It's easier to see if we think about it column by column.
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It's easier to see if we think about it column by column.
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As shown in @fig-pivot-variables, the values in column that was already a variable in the original dataset (`var`) need to be repeated, once for each column that is pivoted.
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As shown in @fig-pivot-variables, the values in column that was already a variable in the original dataset (`id`) need to be repeated, once for each column that is pivoted.
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```{r}
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```{r}
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#| label: fig-pivot-variables
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#| label: fig-pivot-variables
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@ -360,7 +360,7 @@ There are two columns that are already variables and are easy to interpret: `cou
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They are followed by 56 columns like `sp_m_014`, `ep_m_4554`, and `rel_m_3544`.
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They are followed by 56 columns like `sp_m_014`, `ep_m_4554`, and `rel_m_3544`.
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If you stare at these columns for long enough, you'll notice there's a pattern.
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If you stare at these columns for long enough, you'll notice there's a pattern.
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Each column name is made up of three pieces separated by `_`.
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Each column name is made up of three pieces separated by `_`.
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The first piece, `sp`/`rel`/`ep`, describes the method used for the diagnosis, the second piece, `m`/`f` is the `gender` (coded as a binary variable in this dataset), and the third piece, `014`/`1524`/`2535`/`3544`/`4554`/`65` is the `age` range (`014` represents 0-14, for example).
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The first piece, `sp`/`rel`/`ep`, describes the method used for the diagnosis, the second piece, `m`/`f` is the `gender` (coded as a binary variable in this dataset), and the third piece, `014`/`1524`/`2534`/`3544`/`4554`/`5564/``65` is the `age` range (`014` represents 0-14, for example).
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So in this case we have six pieces of information recorded in `who2`: the country and the year (already columns); the method of diagnosis, the gender category, and the age range category (contained in the other column names); and the count of patients in that category (cell values).
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So in this case we have six pieces of information recorded in `who2`: the country and the year (already columns); the method of diagnosis, the gender category, and the age range category (contained in the other column names); and the count of patients in that category (cell values).
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To organize these six pieces of information in six separate columns, we use `pivot_longer()` with a vector of column names for `names_to` and instructors for splitting the original variable names into pieces for `names_sep` as well as a column name for `values_to`:
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To organize these six pieces of information in six separate columns, we use `pivot_longer()` with a vector of column names for `names_to` and instructors for splitting the original variable names into pieces for `names_sep` as well as a column name for `values_to`:
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