title: How to define error bar in Matlab
body: <p>I would like to define error bars on both ends for matlab. Usually, the example of matlab would be <a href="http://matlab.izmiran.ru/help/techdoc/ref/errorbar.html" rel="nofollow noreferrer">http://matlab.izmiran.ru/help/techdoc/ref/errorbar.html</a> where the error bar would take the standard deviation (E) and make it equal(symmetric) on both ends. </p>
  
  <p>I would like to define two points specifically apart from plotting the exact point (x,y). </p>
  
  <p>Please advise. Thanks.</p>