Topic: firedangerWD

[mldenison]

My fire danger graphic on my web page no longer displays.  I'm not sure when it broke.  Perhaps when I went to the latest version of server php.

I saw a post via search that states that it may be related to the ajaxWDwx.js file as having issues with the latest php server version.

I'm not sure where to find the error being thrown.

Both the firedangerWD.php and the ajaxWDwx.js are some years old and I can't find any updated versions.

Can anyone help?

[saratogaWX]

A PHP version update wouldn't have an effect on ajaxWDwx.js at all-- that is a JavaScript and runs in your browser.  It hasn't needed a change for quite sometime and the current version is Version 2.25 - 30-Sep-2017.  But... your site is not running that script .. you're running the Leuven ajax.js script instead.

The firedangerWD.php script on your page at https://www.m82a1.us/weather28/firedanger/testit.php?fwtemp=69.1&fwhum=46&lang=en&fwuom=c seems to be working ok.
Since you're running a Leuven template, I think Wim will need to address the firedanger script .. it's not a part of the Saratoga templates.

As a side note, I've had some issues with using the GD library with TrueType fonts and PHP 7.4 -- it seems that the GD library can't find the font file using relative addressing, but needs a realpath() to locate the font file.

[wvdkuil]

I think you are refer to this script https://www.gwwilkins.org/firedangerWD.php?sce=view
This version does not use clientraw, see topic here https://www.wxforum.net/index.php?topic=38716.0

In your case it would be helpful to add the link  to which website (Leuven / Saratoga /PWS_Dashboard) you want support. 

Wim

[mldenison]

Sorry folks, look at the bottom of this page:

https://www.m82a1.us/index.php

I tried just https://www.m82a1.us/firedangerWD.php in my Pale Moon browser and results in a message saying 'The image can't be displayed because it contains errors'.  Not helpful to me for getting to the cause.

Someone else set up both the Saratoga and Leuven websites for me initially and didn't add the fire danger display in the Leuven template for display.  I didn't know it was even there.  I just looked at both php scripts and they're pretty different.

Here's the one that runs on my Saratoga website:

Code: [Select]

<?php

// Based on firedanger script by SLOweather.com, modified to use Weather
// Display clientraw.txt data file. Release 08/25/07 by W7RSW 
// Initial release 070625 (YYMMDD) by SLOweather.com
// This script uses temperature in F and relative Humidity to 
// calculate the Chandler Burning index and then select the 
// appropriate graphic to display. It also selects the proper
// adjective for the current conditions, but this feature is not
// currently used for anything.

// As written, it requires an image pack of 5 graphics for each of
// the 5 danger levels, in the same directory as the script.

// Based on data from Anole's stickertags.txt file.
// For more information on the Chandler Burning Index:
// http://www.fs.fed.us/psw/topics/fire_science/fire_weather/mfwf/MFWFDesc.shtml
// For the Adjective Fire Danger text for each CBI level
// http://famweb.nwcg.gov/pocketcards/adjective.htm

// DATA FILE: defines the path to the data file. 
// The path can be absolute or relative or a URL)!!

$data_file_path  = 'clientraw.txt'; 
// get the data file
$dataraw = file_get_contents($data_file_path); 


// see if the data file is a WD clientraw.txt file and set
// the WD flag for those specific routines to be executed.
if (preg_match('|clientraw.txt|', $data_file_path)){
   $use_wd_clientraw = '1';
} //end if

// clean up any blank lines
$dataraw = trim($dataraw);
$dataraw = preg_replace("/[\r\n]+[\s\t]*[\r\n]+/","\n",$dataraw);

// if we're using the WD clientraw.txt we have a lot of work to do to make it
// pretty. So here we go:

// put the clientraw.txt data into an array and define the data points
if ($use_wd_clientraw == '1') {
   $data = explode(" ", $dataraw);
   // clean up and define
   
   
   (float)$cTemp = "$data[4]";
   (float)$rh = "$data[5]";
   
   function tempToFahrenheit ($cTemp, $prec=0)
// Given a temperature in degrees Fahrenheit, convert it 
// to Celsius and return the value.  Use an integer for 
// precision ($prec) to round the converted value.
// Returns FALSE on error.
{
  if (!isset($cTemp)) {
    return false;
  }
  $prec = (integer)$prec;
  $fTemp = (float)(1.8 * $cTemp) + 32;
  return round($fTemp, $prec);
}

$ftemp = tempToFahrenheit ($cTemp);

  
// Start Index Calcs

// Chandler Index
$cbi = (((110 - 1.373 * $rh) - 0.54 * (10.20 - $cTemp)) * (124 * pow(10,(-0.0142*"$rh"))))/60;
// CBI = (((110 - 1.373*RH) - 0.54 * (10.20 - T)) * (124 * 10**(-0.0142*RH)))/60

//Sort out the Chandler Index


if ($cbi > "97.5") {
    $cbitxt = "EXTREME";
    $cbiimg= "fdl_extreme.gif";

} elseif ($cbi >="90") {
    $cbitxt = "VERY HIGH";
    $cbiimg= "fdl_vhigh.gif";

} elseif ($cbi >= "75") {
    $cbitxt = "HIGH";
    $cbiimg= "fdl_high.gif";

} elseif ($cbi >= "50") {
    $cbitxt = "MODERATE";
    $cbiimg= "fdl_moderate.gif";

} else

if ($cbi < "50") {
    $cbitxt="LOW";
    $cbiimg= "fdl_low.gif";

}


$img = imagecreatefromgif($cbiimg);
// additions by Saratoga-Weather.org
  $degree_units = '°F';
  $color_red = imagecolorallocate($img,255,0,0);      // RED
  $color_green = imagecolorallocate($img,0,128,0);      // GREEN
  
// If Celsius units desired, use
// $ntemp = round($cTemp,1);
  $ntemp = round($ftemp,1);
  $nrh = round($rh,0);
  $ncbi = round($cbi,0);
 
  imagestring($img, 2, 90, 116, "$ntemp$degree_units", $color_green);
  imagestring($img, 2, 130, 116, "$nrh%", $color_green);
  imagestring($img, 2, 98, 127, "CBI: $ncbi", $color_red);

// ---------------------------------
header("Content-type: image/gif"); 
imageGIF($img);
imagedestroy($img);
}

?>
Sorry for confusion.

[saratogaWX]

You may be missing the fdl_*.gif images in the same directory as the firedangerWD.php script.

Check the error_log for your site.. it will show what the problem with the script is.  When you get 'unable to display' errata with
and image generation script, it's usually caused by text PHP Warning/Notice errors that have to be fixed for the image to display.

[gwwilk]

Here is my version of FiredangerWD.php and it displays correctly.  I've rewritten ajaxWDwx3.js so this graphic on my alternate dashboard updates in real time.

Attached are the base images found in my root directory as well as the modified ajaxWDwx3.js file in minified and uncompressed formats.

The firedangerWD.php script is available here.

[saratogaWX]

Thanks Jerry!

[mldenison]

Thanks, Ken.  The images were not there.  I had them on a backup and copied them back and it's now working.  I appreciate it.  I hope I remember about the error_log which told me the images were gone.  I appreciate your help.

Thanks for the update files, Jerry.  I'll incorporate them later today.  Nice web page you have!

Mort