title: Validation for latitude and longitude values using ng-pattern
body: <p>I have used <strong>ng-pattern</strong> </p>
  
  <p><code>/^[0-9]{1,7}(\.[0-9]+)?$/</code> </p>
  
  <p>for validate latitude and longitude values, but this pattern is not allowing me to enter negative values.</p>
  
  <p>Latitude and longitude values contains negative and decimal values 
  Can you please suggest me one good ng-pattern for my requirements. </p>
  
  <p>Example values are given below </p>
  
  <p><code>234.546655</code>, <code>3.5766876</code>, <code>12345.766566</code></p>
  
  <p>I need validation for this type values. It should allow negative,positive,decimal and all numbers </p>