schema {arrow} | R Documentation |
Create a schema or extract one from an object.
schema(...)
... |
fields, field name/data type pairs (or a list of), or object from which to extract a schema |
Schema for detailed documentation of the Schema R6 object
# Create schema using pairs of field names and data types schema(a = int32(), b = float64()) # Create a schema using a list of pairs of field names and data types schema(list(a = int8(), b = string())) # Create schema using fields schema( field("b", double()), field("c", bool(), nullable = FALSE), field("d", string()) ) # Extract schemas from objects df <- data.frame(col1 = 2:4, col2 = c(0.1, 0.3, 0.5)) tab1 <- arrow_table(df) schema(tab1) tab2 <- arrow_table(df, schema = schema(col1 = int8(), col2 = float32())) schema(tab2)