# `viz.profile()`

**Category:** Visualization
**Status:** experimental

## Purpose

Draw one stored value-by-depth profile at an exact longitude, latitude, time,
and variable.

## Real signature

```r
viz.profile(x, variable, longitude = NULL, latitude = NULL, time = NULL,
            depth = NULL, limits = NULL, na.rm = TRUE,
            reverse_depth = TRUE, points = TRUE, title = NULL,
            subtitle = NULL, caption = NULL)
```

The result is a `ggplot` object. At least two distinct finite depths must
remain. Missing values are never replaced and repeated depths are rejected
rather than averaged. A lazy NetCDF source reads only the selected profile.

## Minimal executable check

```r
library(oceancube)
stopifnot(is.function(viz.profile))
```