--- a/displayHeatmap.php +++ b/displayHeatmap.php @@ -1,95 +1,96 @@ -<?php - - -include('../lib/common.inc.php'); - -$year = 2006; -$ZeroX = 112.5; -$MaxX = 157; -$ZeroY = -9; -$MaxY = -45; - -$XRange = $MaxX - $ZeroX; -$YRange = abs($MaxY) - abs($ZeroY); -$xdivs = 250; -$xdivlength = $XRange / $xdivs; -$ydivs = 250; -$ydivheight = $YRange / $ydivs; - -$borderLeft = 100; -$borderTop = 35; -$width = 497; -$height = 457; -//echo "http://dev.openstreetmap.org/~pafciu17/?module=map&bbox=".$ZeroX.",".$ZeroY.",".$MaxX.",".$MaxY."&width=".$width."&height=".$height; -//$handle = ImageCreate ($width, $height) or die ("Cannot Create image"); -$handle = imagecreatefrompng('../images/australia.png'); -$white = imagecolorallocate($handle, 0, 0, 0); -imagecolortransparent($handle, $white); - -$query = "SELECT supplierPostcode, sum(value) as value, lat, lon FROM `contractnotice`,`postcodes` where childCN = 0 AND supplierCountry = 'Australia' AND YEAR(contractStart) >= '$year' AND supplierPostcode = postcode GROUP BY supplierPostcode"; -$result = mysql_query($query); - -$left = "FFFF50"; -$right= "EF0050"; -$leftR = hexdec(substr($left,0,2)); -$leftG = hexdec(substr($left,2,2)); -$leftB = hexdec(substr($left,4,2)); -$rightR = hexdec(substr($right,0,2)); -$rightG = hexdec(substr($right,2,2)); -$rightB = hexdec(substr($right,4,2)); -for($i=0;$i<250;$i++) { - $colorset[$i] = imagecolorallocatealpha($handle, $leftR + ($i*(($rightR-$leftR)/250)), $leftG + ($i*(($rightG-$leftG)/250)), $leftB + ($i*(($rightB-$leftB)/250)),117 - ($i/250)*40); -} - -while ($row = mysql_fetch_array($result, MYSQL_BOTH)) -{ - $xpage = round((($XRange - ($MaxX - $row['lon'])) / $xdivlength)); - if ($row['lat'] < -40.25) $row['lat']-= 0.75; - $ypage = round(($YRange - (abs($MaxY) - abs($row['lat']))) / $ydivheight); - @$pagevalues[$xpage][$ypage] += $row['value']; - //echo $ypage." ".$xpage."<br>"; -} - -$max = 0; -$min = 0; -for ($i = 0;$i < $xdivs; $i++ ) { - for ($j = 0;$j < $ydivs; $j++ ) { - if (@$pagevalues[$i][$j]) - { - if (@$pagevalues[$i][$j] > $max) $max = @$pagevalues[$i][$j]; - if ($min == 0 || @$pagevalues[$i][$j] < $min) $min = @$pagevalues[$i][$j]; - } else { - @$pagevalues[$i][$j] = ((@$pagevalues[$i][$j] + (@$pagevalues[$i+1][$j] + @$pagevalues[$i][$j+1] - + @$pagevalues[$i-1][$j] + @$pagevalues[$i][$j-1])/4) /2)-9; - @$pagevalues[$i-1][$j] = ((@$pagevalues[$i-1][$j] + (@$pagevalues[$i][$j] + @$pagevalues[$i-1][$j+1] - + @$pagevalues[$i-2][$j] + @$pagevalues[$i-1][$j-1])/4) /2)-9; - @$pagevalues[$i][$j-1] = ((@$pagevalues[$i][$j-1] + (@$pagevalues[$i+1][$j-1] + @$pagevalues[$i][$j] - + @$pagevalues[$i-1][$j-1] + @$pagevalues[$i][$j-2])/4) /2)-9; - } - } -} -//echo $max." ".$min; -//echo "<table width='100%'>"; -for ($i = 0;$i < $xdivs; $i++ ) { -// echo "<tr>"; - for ($j = 0; $j < $ydivs; $j++ ) { -// echo ("<td>". log10(@$pagevalues[$i][$j])/log10($max) ."</td>"); - if ((@$pagevalues[$i][$j]) > $min) { - $x = $i*($width/$xdivs); - $x1 = $borderLeft + $x -($width/$xdivs); - $x2 = $borderLeft + $x +($width/$xdivs); - $y = $j*($height/$ydivs); - $y1 = $borderTop + $y - ($height/$ydivs); - $y2 = $borderTop + $y + ($height/$ydivs); - imagefilledrectangle ($handle, $x1, $y1, $x2, $y2, $colorset[(int)((log10(@$pagevalues[$i][$j])/log10($max))*249)]); - } - } -//echo "</tr>"; -} -//echo "</table>" - -header ("Content-type: image/png"); -ImagePng ($handle); - - +<?php + +include('lib/common.inc.php'); + +$year = 2006; +$ZeroX = 112.5; +$MaxX = 157; +$ZeroY = -9; +$MaxY = -45; + +$XRange = $MaxX - $ZeroX; +$YRange = abs($MaxY) - abs($ZeroY); +$xdivs = 250; +$xdivlength = $XRange / $xdivs; +$ydivs = 250; +$ydivheight = $YRange / $ydivs; + +$borderLeft = 100; +$borderTop = 35; +$width = 497; +$height = 457; +//echo "http://dev.openstreetmap.org/~pafciu17/?module=map&bbox=".$ZeroX.",".$ZeroY.",".$MaxX.",".$MaxY."&width=".$width."&height=".$height; +//$handle = ImageCreate ($width, $height) or die ("Cannot Create image"); +$handle = imagecreatefrompng('images/australia.png'); +$white = imagecolorallocate($handle, 0, 0, 0); +imagecolortransparent($handle, $white); + +$query = 'SELECT "supplierPostcode", sum("value") as value, max(lat) as lat, max(lon) as lon FROM contractnotice inner join postcodes on "supplierPostcode" = postcode::text where "childCN" is null AND "supplierCountry" = \'Australia\' GROUP BY "supplierPostcode"'; +$query = $conn->prepare($query); +$query->execute(); +databaseError($conn->errorInfo()); + + +$left = "FFFF50"; +$right = "EF0050"; +$leftR = hexdec(substr($left, 0, 2)); +$leftG = hexdec(substr($left, 2, 2)); +$leftB = hexdec(substr($left, 4, 2)); +$rightR = hexdec(substr($right, 0, 2)); +$rightG = hexdec(substr($right, 2, 2)); +$rightB = hexdec(substr($right, 4, 2)); +for ($i = 0; $i < 250; $i++) { + $colorset[$i] = imagecolorallocatealpha($handle, $leftR + ($i * (($rightR - $leftR) / 250)), $leftG + ($i * (($rightG - $leftG) / 250)), $leftB + ($i * (($rightB - $leftB) / 250)), 117 - ($i / 250) * 40); +} + +foreach ($query->fetchAll() as $row) { + $xpage = round((($XRange - ($MaxX - $row['lon'])) / $xdivlength)); + if ($row['lat'] < -40.25) + $row['lat']-= 0.75; + $ypage = round(($YRange - (abs($MaxY) - abs($row['lat']))) / $ydivheight); + @$pagevalues[$xpage][$ypage] += $row['value']; + //echo $ypage." ".$xpage."<br>"; +} + +$max = 0; +$min = 0; +for ($i = 0; $i < $xdivs; $i++) { + for ($j = 0; $j < $ydivs; $j++) { + if (@$pagevalues[$i][$j]) { + if (@$pagevalues[$i][$j] > $max) + $max = @$pagevalues[$i][$j]; + if ($min == 0 || @$pagevalues[$i][$j] < $min) + $min = @$pagevalues[$i][$j]; + } else { + @$pagevalues[$i][$j] = ((@$pagevalues[$i][$j] + (@$pagevalues[$i + 1][$j] + @$pagevalues[$i][$j + 1] + + @$pagevalues[$i - 1][$j] + @$pagevalues[$i][$j - 1]) / 4) / 2) - 9; + @$pagevalues[$i - 1][$j] = ((@$pagevalues[$i - 1][$j] + (@$pagevalues[$i][$j] + @$pagevalues[$i - 1][$j + 1] + + @$pagevalues[$i - 2][$j] + @$pagevalues[$i - 1][$j - 1]) / 4) / 2) - 9; + @$pagevalues[$i][$j - 1] = ((@$pagevalues[$i][$j - 1] + (@$pagevalues[$i + 1][$j - 1] + @$pagevalues[$i][$j] + + @$pagevalues[$i - 1][$j - 1] + @$pagevalues[$i][$j - 2]) / 4) / 2) - 9; + } + } +} +//echo $max." ".$min; +//echo "<table width='100%'>"; +for ($i = 0; $i < $xdivs; $i++) { +// echo "<tr>"; + for ($j = 0; $j < $ydivs; $j++) { +// echo ("<td>". log10(@$pagevalues[$i][$j])/log10($max) ."</td>"); + if ((@$pagevalues[$i][$j]) > $min) { + $x = $i * ($width / $xdivs); + $x1 = $borderLeft + $x - ($width / $xdivs); + $x2 = $borderLeft + $x + ($width / $xdivs); + $y = $j * ($height / $ydivs); + $y1 = $borderTop + $y - ($height / $ydivs); + $y2 = $borderTop + $y + ($height / $ydivs); + imagefilledrectangle($handle, $x1, $y1, $x2, $y2, $colorset[(int) ((log10(@$pagevalues[$i][$j]) / log10($max)) * 249)]); + } + } +//echo "</tr>"; +} +//echo "</table>" + +header("Content-type: image/png"); +ImagePng($handle); ?>