Method head

src/danfojs-base/core/series.ts:157–168

* Returns the first n values in a Series * @param rows The number of rows to return * @example * ``` * const sf = new Series([1, 2, 3, 4, 5, 6], { index: ['a', 'b', 'c', 'd', 'e', 'f'] }); * const sf2 = sf.head(3); * sf2.print(); * ```

(rows: number = 5)

      * ```
    */
    head(rows: number = 5): Series {
        if (rows <= 0) {
            throw new Error("ParamError: Number of rows cannot be less than 1")
        }
        if (this.shape[0] <= rows) {
            return this.copy()
        }
        if (this.shape[0] - rows < 0) {
            throw new Error("ParamError: Number of rows cannot be greater than available rows in data")
        }
        return this.iloc([`0:${rows}`])
    }

    /**
      * Returns the last n values in a Series