You might be interested in creating your own special missing values so that you can mark specific, known reasons for missingness. For example, “9999” is sometimes used in weather data, say for for example, the Global Historical Climate Network (GHCN) data), to indicate specific types of missingness, such as instrument failure. Special Missing Values Special Missing Values Nicholas Tierney ĭata sometimes have special missing values to indicate specific reasons for missingness.
0 Comments
Leave a Reply. |