Version 1 (modified by 15 years ago) ( diff ) | ,
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Add Layer, Query and Reproject
Here's a small example which:
- opens a mapfile
- adds a new layer
- queries and new layer
- reprojects output map
- draws and saves to file
Example based on http://dl.maptools.org/dl/omsug/osgis2004/php_mapscript_mum2.ppt in response to http://n2.nabble.com/Problems-with-MapScript-and-setProjection-tt2291579.html#none
<?php // load mapscript dl("php_mapscript.so"); // add map $map = ms_newMapObj("config.map"); // add new layer to map $layer = ms_newLayerObj($map); $layer->set("name", "foo"); $layer->set("status", MS_ON); $layer->set("data", "path/to/file.shp"); $layer->set("type", MS_LAYER_POINT); $layer->setProjection("init=epsg:4326"); $layer->set("template", "ttt"); $layer->set("dump", "true"); // add new class to new layer $class = ms_newClassObj($layer); $class->set("name", "foo"); // add new style to new class $style = ms_newStyleObj($class); $style->set("symbol", 2); $style->set("size", 8); $style->color->setRGB(255, 0, 0); // create new rect to query against the new layer $rect = ms_newRectObj(); $rect->setExtent(-95, 40, -50, 60); // query new layer $layer->queryByRect($rect); // set projection of output map $map->setProjection("init=epsg:42304", MS_TRUE); // draw $image=$map->drawQuery(); $image->saveImage("/tmp/out.png"); ?>
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