Q:

R Markdown message=FALSE still spits out warnings

My R Markdown chunk header is as follows:
```{r fluid_flowrate, echo=FALSE, message=FALSE, fig.height = 4, fig.width = 10}
# followed by my ggplot2 code
```

yet I knit to HTML and I get the proper plot, accompanied by this warning, printed twice:
## Warning: Removed 1 rows containing missing values (geom_point).
## Warning: Removed 1 rows containing missing values (geom_point).

I thought message=FALSE forced warnings to disappear. Why are they appearing?

A:

If you add the following to the chunk options
warning=FALSE

it will prevents warnings that are generated by code from appearing in the finished

