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Geodata (#291)

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* added geographic data to burgs CSV export
* fixed projection problems in export
added cell -> geojson export
added a QGIS example style
* adding routes data
* adding river data
* added PHP script to add random details to cells.
This commit is contained in:
Tom 2019-09-08 11:00:14 +02:00 • committed by Azgaar
parent e743735e57
commit 263c2d6a3c
12 changed files with 857 additions and 199 deletions
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361
QGIS/Style_Biomes.qml Normal file
View file

@ -0,0 +1,361 @@
<!DOCTYPE qgis PUBLIC 'http://mrcc.com/qgis.dtd' 'SYSTEM'>
<qgis styleCategories="Symbology" version="3.8.2-Zanzibar">
<renderer-v2 enableorderby="0" forceraster="0" attr="biome" symbollevels="0" type="categorizedSymbol">
<categories>
<category label="Marine" value="0" symbol="0" render="true"/>
<category label="Hot Desert" value="1" symbol="1" render="true"/>
<category label="Tundra" value="10" symbol="2" render="true"/>
<category label="Glacier" value="11" symbol="3" render="true"/>
<category label="Wetland" value="12" symbol="4" render="true"/>
<category label="Cold Desert" value="2" symbol="5" render="true"/>
<category label="Savanna" value="3" symbol="6" render="true"/>
<category label="Grassland" value="4" symbol="7" render="true"/>
<category label="Tropical Seasonal Forest" value="5" symbol="8" render="true"/>
<category label="Temperate Deciduous Forest" value="6" symbol="9" render="true"/>
<category label="Tropical Rainforest" value="7" symbol="10" render="true"/>
<category label="Temperate Rainforest" value="8" symbol="11" render="true"/>
<category label="Taiga" value="9" symbol="12" render="true"/>
<category label="" value="" symbol="13" render="true"/>
</categories>
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81
QGIS/add_random_points.php Normal file
View file

@ -0,0 +1,81 @@
<?php
$max_deviation = 0.2;
$max_abs = 0.02;
$min_distance = 0.1;
$iterations = 4;
if ($argc < 2 ) {
exit( "Usage: add_random_points.php <filename.json>\n" );
}
// FIXME: This script created a few cases of self-intersection that must be fixed manually
// in QGIS: Vector -> Geometry Tools -> Check Validity
$cells = json_decode(file_get_contents($argv[1]), true);
for ($i=0; $i<$iterations; $i++) {
$lookup = array();
foreach ($cells['features'] as &$cell) {
$points = $cell['geometry']['coordinates'][0];
$prev = null;
$newpoints = array();
foreach ($points as $point) {
if ($prev) {
$distance = sqrt(pow($prev[0] - $point[0], 2) + pow($prev[1] - $point[1], 2));
if ($distance == 0) continue;
if ($distance > $min_distance) {
$id_a = $prev[0]."-".$prev[1];
$id_b = $point[0]."-".$point[1];
if (isset($lookup[$id_a."--".$id_b])) {
$newpoints[] = $lookup[$id_a."--".$id_b];
} elseif (isset($lookup[$id_b."--".$id_a])) {
$newpoints[] = $lookup[$id_b."--".$id_a];
} else {
$x = ($prev[0]+$point[0])/2.0;
$y = ($prev[1]+$point[1])/2.0;
$r = mt_rand() / mt_getrandmax(); // 0-1
$r = ($r+1) / 2; // 0.5 - 1.0
// if we define dx=x2-x1 and dy=y2-y1, then the normals are (-dy, dx) and (dy, -dx).
$dx = $point[0] - $x;
$dy = $point[1] - $y;
if (mt_rand() / mt_getrandmax() < 0.5) {
$x_off = -$dy;
$y_off = $dx;
} else {
$x_off = $dy;
$y_off = -$dx;
}
$x_off *= $r * $max_deviation;
$x_off = max(min($x_off, $max_abs), $max_abs*-1);
$y_off *= $r * $max_deviation;
$y_off = max(min($y_off, $max_abs), $max_abs*-1);
$p = array($x + $x_off, $y + $y_off);
$lookup[$id_a."--".$id_b] = $p;
$newpoints[] = $p;
}
}
}
$newpoints[] = $point;
$prev = $point;
}
$cell['geometry']['coordinates'][0] = $newpoints;
}
}
echo json_encode($cells, JSON_PRETTY_PRINT);
?>