columnsListUpdate updates the list of columns
()
| 387 | |
| 388 | // columnsListUpdate updates the list of columns |
| 389 | func (pl *PlotEditor) columnsListUpdate() { |
| 390 | if pl.table == nil || pl.table.Table == nil { |
| 391 | pl.Columns = nil |
| 392 | return |
| 393 | } |
| 394 | dt := pl.table.Table |
| 395 | nc := dt.NumColumns() |
| 396 | if nc == len(pl.Columns) { |
| 397 | return |
| 398 | } |
| 399 | pl.Columns = make([]*ColumnOptions, nc) |
| 400 | clri := 0 |
| 401 | hasOn := false |
| 402 | for ci := range dt.NumColumns() { |
| 403 | cn := dt.ColumnName(ci) |
| 404 | if pl.Options.XAxis == "" && ci == 0 { |
| 405 | pl.Options.XAxis = cn // x-axis defaults to the first column |
| 406 | } |
| 407 | cp := &ColumnOptions{Column: cn} |
| 408 | cp.defaults() |
| 409 | tcol := dt.Columns[ci] |
| 410 | if tcol.IsString() { |
| 411 | cp.IsString = true |
| 412 | } else { |
| 413 | cp.IsString = false |
| 414 | // we enable the first non-string, non-x-axis, non-first column by default |
| 415 | if !hasOn && cn != pl.Options.XAxis && ci != 0 { |
| 416 | cp.On = true |
| 417 | hasOn = true |
| 418 | } |
| 419 | } |
| 420 | cp.fromMetaMap(pl.table.Table.MetaData) |
| 421 | inc := 1 |
| 422 | if cn == pl.Options.XAxis || tcol.IsString() || tcol.DataType() == reflect.Int || tcol.DataType() == reflect.Int64 || tcol.DataType() == reflect.Int32 || tcol.DataType() == reflect.Uint8 { |
| 423 | inc = 0 |
| 424 | } |
| 425 | cp.Color = colors.Uniform(colors.Spaced(clri)) |
| 426 | pl.Columns[ci] = cp |
| 427 | clri += inc |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | // ColumnsFromMetaMap updates all the column settings from given meta map |
| 432 | func (pl *PlotEditor) ColumnsFromMetaMap(meta map[string]string) { |
no test coverage detected