CODEWITHSUNDEEP
rustrust-polars
Darnock
Darnock

Reputation: 71

How do you vertically concatenate two Polars data frames in Rust?

According to the Polars documentation, in Python, you can vertically concatenate two data frames using the procedure shown in the below code snippet:

df_v1 = pl.DataFrame(
    {
        "a": [1],
        "b": [3],
    }
)
df_v2 = pl.DataFrame(
    {
        "a": [2],
        "b": [4],
    }
)
df_vertical_concat = pl.concat(
    [
        df_v1,
        df_v2,
    ],
    how="vertical",
)
print(df_vertical_concat)

The output of the above code is:

shape: (2, 2)
┌─────┬─────┐
│ a   ┆ b   │
│ --- ┆ --- │
│ i64 ┆ i64 │
╞═════╪═════╡
│ 1   ┆ 3   │
├╌╌╌╌╌┼╌╌╌╌╌┤
│ 2   ┆ 4   │
└─────┴─────┘

How do you perform the same operation in Rust?

Upvotes: 1

Views: 1969

Answers (1)

Darnock
Darnock

Reputation: 71

You can do it as follows:

let df_vertical_concat = df_v1.vstack(&df_v2).unwrap();

Upvotes: 2

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