# NaN why?

**URL:** <https://forum.kirupa.com/t/nan-why/233823>\
**Category:** Uncategorized\
**Created:** [July 27, 2007, 8:33am UTC](https://forum.kirupa.com/t/nan-why/233823 "2007-07-27T08:33:12Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![brndn](https://avatars.discourse-cdn.com/v4/letter/b/dec6dc/32.png) [@brndn](https://forum.kirupa.com/u/brndn)\
**Post date:** [July 27, 2007, 8:33am UTC](https://forum.kirupa.com/t/nan-why/233823/1 "2007-07-27T08:33:12Z")

</div>

Can anyone explain to me why I can not get the numeric values for lon\_zoom and lat\_zoom???  
everthing else is returning the correct numbers???

```auto
var This_Lat:Number = address.attributes.lat;
  var This_Lon:Number = address.attributes.lon;
  
var lon_zoom:Number = (global_lon+This_Lon)/2;
var lat_zoom:Number = (global_lat+This_Lat)/2;

var latlonZm = new LatLon(lat_zoom,lon_zoom);

trace(lat_zoom+"="+global_lat+"+"+This_Lat);

```

The trace returns this

```auto
NaN=51.48408+51.32121

```