In SAS I would do a data step with a MERGE statement. In R one way to perform these kind of set operations is to use the %in% operator like this. In the first case, you could use the R merge() function.ou just printed the desired data frame (where Ozone is not NA) to the screen. The last step (the only step you really need) is to âdeleteâ the rows by recreating the data frame: just reassign the data frame from the filtered rows.
The state of Florida has a native species of Lantana called Lantana depressa, or gold Lantana, which is classified as endangered. This rare plant is a creeping groundcover with yellow flower clusters and is native to the southern Florida county of Miami-Dade.
Many of the lantanas need very little pruning each year to keep them looking nice. If your plants are growing well but getting to large for the garden they can be cut back. The best time to cut your lantana back is in early spring as new growth is starting to emerge. Pruning in the fall can cause the death of lantana as this makes the plant less resistant to winter cold weather. Rain entering stems can cause rotting and other diseases when cut back in the cooler wet season. The plants can be cut back to 12 inches of the ground along with cutting out any damaged or death growth.