title: R remove rows with condition rows contains negative values
body: <p>How to remove the rows in a dataframe which entire rows values are negative?</p>
  <pre><code>structure(list(name = c(1,-2,-6), data1 = c(1,-30,6), 
  data3 = c(1,-51,-6), score1 = c(0, -40, 10), 
  score2 = c(20, -25, 10)), class = &quot;data.frame&quot;, 
  row.names = c(NA, -3L))
  </code></pre>
  <p>output</p>
  <pre><code>name data1 data3 score1 score2
   1     1     1      0     20 
  -6     6    -6     10     10
  </code></pre>