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New QRG conversion function

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HB9HIL
2024-08-21 13:57:56 +02:00
parent f54f98708b
commit 558ccd893c
1 changed files with 89 additions and 3 deletions
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92
application/libraries/Frequency.php
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@@ -225,9 +225,95 @@ class Frequency {
return $Band;
}
// converts a frequency in Hz to MHz output
function hz_to_mhz($frequency) {
return number_format(($frequency / 1000 / 1000), 3) . " MHz";
/**
* Convert a frequency to a specified unit and return it in a specified format.
*
* @param float $frequency The frequency value to be converted.
*
* @param int $r_option (Optional) The result format option.
* 0: Return as a string with just the frequency.
* 1 (default): Return as a string with frequency and unit.
* 2: Return as a string with frequency, unit, and band.
*
* @param string $source_unit (Optional) The source unit of the frequency.
* Possible values: 'Hz', 'kHz', 'MHz', 'GHz'.
* Default is 'Hz'.
* ! If the source unit is not 'Hz', you have to provide the source unit. !
*
* @param string $target_unit (Optional) The target unit for conversion.
* Possible values: 'Hz', 'kHz', 'MHz', 'GHz'.
* If not provided, the unit is determined based on session data (function qrg_unit()).
*
* @return string The converted frequency in the specified format.
*
* To change the number of decimals shown per unit, add in your config.php
*
* $config['qrg_hz_dec'] = 0;
* $config['qrg_khz_dec'] = 0;
* $config['qrg_mhz_dec'] = 3;
* $config['qrg_ghz_dec'] = 3;
*
* and adjust the values to your needs.
*
*/
function qrg_conversion($frequency, $r_option = 1, $source_unit = 'Hz', $target_unit = NULL) {
$CI = &get_instance();
// Get the band
$band = $this->GetBand($frequency);
// Get the target unit
if ($target_unit === NULL) {
$target_unit = $this->qrg_unit($band);
}
// Convert the frequency to Hz
switch ($source_unit) {
case 'Hz':
break;
case 'kHz':
$frequency *= 1000;
break;
case 'MHz':
$frequency *= 1000000; // 1000 * 1000
break;
case 'GHz':
$frequency *= 1000000000; // 1000 * 1000 * 1000
break;
}
// Convert the frequency to the target unit
switch ($target_unit) {
case 'Hz':
$decimals = $CI->config->item('qrg_hz_dec') ?? 0;
break;
case 'kHz':
$frequency /= 1000;
$decimals = $CI->config->item('qrg_khz_dec') ?? 0;
break;
case 'MHz':
$frequency /= 1000000; // 1000 * 1000
$decimals = $CI->config->item('qrg_mhz_dec') ?? 3;
break;
case 'GHz':
$frequency /= 1000000000; // 1000 * 1000 * 1000
$decimals = $CI->config->item('qrg_ghz_dec') ?? 3;
break;
}
// Return
switch ($r_option) {
case 0:
return number_format($frequency, $decimals, '.', '');
break;
case 1:
return number_format($frequency, $decimals, '.', '') . ' ' . $target_unit;
break;
case 2:
return number_format($frequency, $decimals, '.', '') . ' ' . $target_unit . ' (' . $band . ')';
break;
}
}
function qrg_unit($band) {