Amateur questions

• how to round a vector consists of numbers,NA, and NaN
• how to add legend to scatterplot3d in R
• loop through a list of dataframe in R and apply if else function
• ggplot2: how to manually adjust scale_area
• how to write micrometer squared per cubic meter in plot label in R
• split dataframe in R by row
• Make scale_y_log10 to have the tickmarks at 0.01,0.1,1
• How to simulate bimodal distribution?

Amateur answers