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var points = new OpenLayers.Layer.PointGrid({
isBaseLayer: true, dx: 15, dy: 15
});
var map = new OpenLayers.Map({
div: "map",
layers: [points],
center: new OpenLayers.LonLat(0, 0),
zoom: 2
});
var rotation = document.getElementById("rotation");
rotation.value = String(points.rotation);
rotation.onchange = function() {
points.setRotation(Number(rotation.value));
};
var dx = document.getElementById("dx");
var dy = document.getElementById("dy");
dx.value = String(points.dx);
dy.value = String(points.dy);
dx.onchange = function() {
points.setSpacing(Number(dx.value), Number(dy.value));
};
dy.onchange = function() {
points.setSpacing(Number(dx.value), Number(dy.value));
};
var max = document.getElementById("max");
max.value = String(points.maxFeatures);
max.onchange = function() {
points.setMaxFeatures(Number(max.value));
};
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