javascript - Show partly one layer and partly another layer in OpenLayers? -

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i need show let's on half page topmost layer, , on other half layer below. being able change how visible of each layer great if possible (by dragging border between them example).

right have no other idea besides implementing clunky frames , 2 separate maps. better ideas?

watch control written cédric moullet presented in dev list in post: http://osgeo-org.1560.x6.nabble.com/openlayers-control-swipe-td5032741.html


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