no result showing using with (math)

[bpaulsen2000]

hi,

having problem with code, as follows:

<script language="Javascript">
<!--



var lon1=80.281567;
var lon2=97.218167;
var lat1=43.102683;
var lat2=44.674678;
with (math){
var d=2*asin(sqrt((sin((lat1-lat2)/2))^2 +
cos(lat1)*cos(lat2)*(sin((lon1-lon2)/2))^2));
document.write(d);

)
//-->
</script>

[joeframbach]

math should be capitalized.
also, you are closing a bracket with a parenthesis
with(Math)
{


}

[bpaulsen2000]

Hi,

thanks for catching typos--still have problem with output
which results in

NaN

whatever that is?!?

[joeframbach]

im getting that too. i dont know why either:confused:

[bpaulsen2000]

hi again,

yeah, strange stuff. here's another version with different
latitudes and longitudes:

<script language="Javascript">
<!--
var lon1=80.281567;
var lon2=79.726284;
var lat1=40.604424;
var lat2=37.347167;
with (Math){
var d=2*asin(sqrt((sin((lat1-lat2)/2))^2 + cos(lat1)*cos(lat2)*(sin((lon1-lon2)/2))^2));
document.write(d);
}
//-->
</script>

[joeframbach]

what is it supposed to return?

[bpaulsen2000]

hi,

just an integer (possibly floating point) representing distance
between two zip codes using the great circle calculation.

[mordred]

Perhaps you're getting over the limit of floating point numbers? They are only defined for a limited range of numbers.

Furthermore, is the bitwise operation with ^ intended or did you mean to use that as a short-hand for Math.pow(), which doesn't lead to the same result?

[bpaulsen2000]

hi guys,

went serverside for correct usage. wrong algorithm anyhow.
thx for looksees though.