Example for <#nextwindindex>?

[Per69]

Hi

Anyone know how to use <#nextwindindex> in html code?
In help it says it should be together with wdirdata and wspddata but how?
I suppose it should calculate the data from those?

<td>Next wind</td>
<td><#nextwindindex>&nbsp;<#windunit></td>

Regards Per

[beteljuice]

Realistically it is of limited use as most of the derived values of the wind data are already available as either <#webtags> or values in realtime.txt

However; one value which can be determined that isn't available anywhere else is the direction (degrees) of the last 10min high gust value:

This code does work

Code: Select all

<script language="javascript">
var langWindDir = new Array( /* used to decode wind direction degrees to text */
	"N", "NNE", "NE", "ENE", 
	"E", "ESE", "SE", "SSE", 
	"S", "SSW", "SW", "WSW", 
	"W", "WNW", "NW", "NNW");


var gust10 = <#wgust>; // highest windspeed in last 10 min.
var hwspd = new Array(<#wspddata>);
var hwdir = new Array(<#wdirdata>);
var next_index = <#nextwindindex>; // the NEXT array 'key' eg. 0 - 3599
var total = hwspd.length; // the amount of data in the array eg. upto 3600

if(next_index == 0) { // array 'rollover'
	current_pointer = total -1; // last data entry
} else {
	current_pointer = next_index -1;
}

for(var i = 0; i < total; i++) { // don't check more than exists !
	if(current_pointer < 0) current_pointer = total -1 ; // 'rollover' has occured during the loop
	if(hwspd[i] == gust10) { // the LATEST occurrence

// write the information in the page, edit to suit

		document.write('Recent Gust ' + hwspd[i] + ' <#windunit> from ' + hwdir[i] + '&deg;, ' + windDirLang(hwdir[i]) + '<br />');
		break;
	}
	current_pointer--; // value not found, move down one
}


function windDirLang ($winddir) // user language NNW
// Take wind direction value, return the
// text label based upon 16 point compass -- function by beeker425
//  see http://www.weather-watch.com/smf/index.php/topic,20097.0.html
{
   return langWindDir[Math.floor(((parseInt($winddir) + 11) / 22.5) % 16 )];
}	// END function windDirLang


</script>

Lot of work to get a three digit number accessing upto 7,200 data bits

[Per69]

Hi beteljuice

Thank you for answering.
I´m still a bit confused.
Isn't nextwindindex supposed to calculate next windspeed?
When I test with changing for example <#wgust> to <#nextwindindex>? I get a big number like 2500 or so.
When I put in your code then it's no difference.
I get a warning here between # and w:
var gust10 = <#wgust>; // highest windspeed in last 10 min.
Or have I got this all wrong?

Regards Per

[beteljuice]

"... Isn't nextwindindex supposed to calculate next windspeed?"

No !
<#wspddata> and <#wdirdata> are arrays of the last 3,600 wind readings.

Because the data is redundantly cycled we need <#nextwindindex> to calculate which is the current value.

Or have I got this all wrong?

More like the wrong end of the stick

[Per69]

Ok, beteljuice.

Thank you...

/Per