* Internal function to set the column names for the NDFrame. This function * performs a check to ensure that the column names are unique, and same length as the * number of columns in the data.
(columns?: string[])
| 309 | * number of columns in the data. |
| 310 | */ |
| 311 | $setColumnNames(columns?: string[]) { |
| 312 | |
| 313 | // console.log(columns); |
| 314 | if (this.$isSeries) { |
| 315 | if (columns) { |
| 316 | if (this.$data.length != 0 && columns.length != 1 && typeof columns != 'string') { |
| 317 | ErrorThrower.throwColumnNamesLengthError(this, columns) |
| 318 | } |
| 319 | this.$columns = columns |
| 320 | } else { |
| 321 | this.$columns = ["0"] |
| 322 | } |
| 323 | } else { |
| 324 | if (columns) { |
| 325 | |
| 326 | if (this.$data.length != 0 && columns.length != this.shape[1]) { |
| 327 | |
| 328 | ErrorThrower.throwColumnNamesLengthError(this, columns) |
| 329 | } |
| 330 | if (Array.from(new Set(columns)).length !== columns.length) { |
| 331 | ErrorThrower.throwColumnDuplicateError() |
| 332 | } |
| 333 | |
| 334 | this.$columns = columns |
| 335 | } else { |
| 336 | this.$columns = (utils.range(0, this.shape[1] - 1)).map((val) => `${val}`) //generate columns |
| 337 | } |
| 338 | } |
| 339 | } |
| 340 | |
| 341 | /** |
| 342 | * Returns the shape of the NDFrame. Shape is determined by [row length, column length] |
no test coverage detected