# Layer L3.5  --  Feature diagnostics

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- Layer ID: `l3_5`
- Category: `diagnostic`
- Sub-layers: 6
- Axes: 15
- Options across axes: 50

## Sub-layers

| Sub-layer | Name | Gate | Axes |
|---|---|---|---|
| `L3_5_A_comparison_axis` | Comparison axis | always | [comparison_stages](axes/comparison_stages.md), [comparison_output_form](axes/comparison_output_form.md) |
| `L3_5_B_factor_block_inspection` | Factor block inspection | always | [factor_view](axes/factor_view.md), [dfm_diagnostics](axes/dfm_diagnostics.md) |
| `L3_5_C_feature_correlation` | Feature correlation | always | [feature_correlation](axes/feature_correlation.md), [correlation_method](axes/correlation_method.md), [correlation_view](axes/correlation_view.md) |
| `L3_5_D_lag_block_inspection` | Lag block inspection | always | [lag_view](axes/lag_view.md), [marx_view](axes/marx_view.md) |
| `L3_5_E_selected_features_post_selection` | Selected features post-selection | always | [selection_view](axes/selection_view.md), [stability_metric](axes/stability_metric.md) |
| `L3_5_Z_export` | Diagnostic export | always | [diagnostic_format](axes/diagnostic_format.md), [attach_to_manifest](axes/attach_to_manifest.md), [figure_dpi](axes/figure_dpi.md), [latex_export](axes/latex_export.md) |

```{toctree}
:hidden:
:maxdepth: 1

axes/comparison_stages
axes/comparison_output_form
axes/factor_view
axes/dfm_diagnostics
axes/feature_correlation
axes/correlation_method
axes/correlation_view
axes/lag_view
axes/marx_view
axes/selection_view
axes/stability_metric
axes/diagnostic_format
axes/attach_to_manifest
axes/figure_dpi
axes/latex_export
```