# FormulaTraceEntry

Canonical page: https://www.adaptabletools.com/docs/reference/formulatraceentry

One column referenced by the calculated-column formula currently being traced.

```ts title="TypeScript"
export interface FormulaTraceEntry 
```

## Properties

| Property | Type | Description |
| --- | --- | --- |
| [colorIndex](https://www.adaptabletools.com/docs/reference/formulatraceentry.md#colorindex) | `number` | Index into the formula-trace palette (0 .. FORMULA_TRACE_PALETTE_SIZE - 1) |
| [columnId](https://www.adaptabletools.com/docs/reference/formulatraceentry.md#columnid) | `string` | Column Id referenced by a COL(...) node in the expression |
| [isVisible](https://www.adaptabletools.com/docs/reference/formulatraceentry.md#isvisible) | `boolean` | Whether the column is currently visible in the grid / layout |

## Property Details

### colorIndex

Index into the formula-trace palette (0 .. FORMULA_TRACE_PALETTE_SIZE - 1)

```ts title="TypeScript"
colorIndex: number;
```

###### Property Value

`number`

### columnId

Column Id referenced by a COL(...) node in the expression

```ts title="TypeScript"
columnId: string;
```

###### Property Value

`string`

### isVisible

Whether the column is currently visible in the grid / layout

```ts title="TypeScript"
isVisible: boolean;
```

###### Property Value

`boolean`