Subseting data.frames with more than 1 condition

Question

I found this question to be similiar to mine, but I need to know a way to do the same thing with mathematical conditions such as less or equal than or greator or equal (<=, >

Answer 1

Just concatenate the expressions with & (AND) or | (OR)

Using subset

 subset(DF, GENProm < 0.5 & matricula > 10)

Or, more safely, [

DF[DF[['GENProm']] < 0.5 & DF[['matricula']] > 10, ]