title: Getting randomly latitude/longitude data in R
body: <p>I simulated a dataset for an online Retail market. The customer can purchase their products in different stores in Germany (e.g. Munich, Berlin, Hamburg..) and in Online stores. To get the latitude/longitude data from the cities I use <code>geocode</code> from the <code>ggmap package</code>. But customers who purchase Online are able to purchase them all over the country. Now I want to generate random latitude/longitude data within Germany for the online purchases, to map them later with shiny leaflet. Is there any way to do this?</p>
  
  <p>My df looks like this:</p>
  
  <pre><code>View(df)
  ClientId   Store ... lat   lon
  1          Berlin    52    13
  2          Munich    48    11
  3          Online    x     x  
  4          Online    x     x
  </code></pre>
  
  <p>But my aim is a data frame for example like this:</p>
  
  <pre><code>ClientId   Store ... lat   lon
  1          Berlin    52    13
  2          Munich    48    11
  3          Online    50    12
  4          Online    46    10
  </code></pre>
  
  <p>Is there any way to get these random latitude/longitude data and integrate it to my data frame?</p>