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About zsoooc

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    webGIS, PostGIS, OpenLayers, Geoserver
  1. zsoooc

    OL-Cesium problem

    Hi All! I would like to test the Ol-Cesium on my computer with this example: https://openlayers.org/ol-cesium/examples/oldfashioned.html I saved the olcs.css, olcesium.js and Cesium.js file into my webserver's folder. So, here is my code (I replaced only the lines where JS and CSS are located, the others are the same). The 2D view with only OpenLayers is works well, but the 3D Cesium view doesn't. The map is black, and I got no error messages in console. Do you have any tips what cause this error? <html> <head> <meta charset="UTF-8"> <link rel="stylesheet" href="https://cdn.rawgit.com/openlayers/openlayers.github.io/master/en/v5.3.0/css/ol.css" type="text/css"> <link rel="stylesheet" href="olcs.css" type="text/css"> <style> #map { height: 300px; width: 500px } </style> <script src="https://cdn.rawgit.com/openlayers/openlayers.github.io/master/en/v5.3.0/build/ol.js"></script> <script src="olcesium.js"></script> <script src="Cesium.js"></script> </head> <body> <p>Old-fashioned example</p> <input id="enable" type="button" value="Enable/disable" /> <div id="map"></div> </body> <script> var ol2d = new ol.Map({ layers: [ new ol.layer.Tile({ source: new ol.source.OSM() }) ], target: 'map', view: new ol.View({ center: ol.proj.transform([25, 20], 'EPSG:4326', 'EPSG:3857'), zoom: 3 }) }); var ol3d = new olcs.OLCesium({ map: ol2d, }); ol3d.setEnabled(true); var setEnabled = function() {ol3d.setEnabled(!ol3d.getEnabled())}; document.getElementById('enable').addEventListener('click', setEnabled); </script> </html>
  2. I have to divide points into groups. These groups will be used by agents to talk to property owners. The goal is to make the agent's job easy by grouping parcels that are near each other together, as well as divide the parcels into (almost) equal numbers so that the work is distributed evenly. The number of agents is variable: from 2 to 8. I've explored various ArcGIS tools (Grouping analysis and Distriction), but none seem to suit my need. Is there a reliable method to do this task? I prefer to use ArGIS, but I also interested in open source solution like Qgis, GRASS, PostGIS etc.
  3. Does pgrouting handle OSM relations? I would like to use turn restrictions. Is it possible? I would like to import raw OSM file with osm2pgrouting.
  4. Dear deepgis Thank you, I know this link. She computed only NDVI and NDWI values, not biomass. I don't know how to estimate biomass from vegetation indices.
  5. Dear All, I am a begineer in remote sensing. Now, I would like to calculate relative biomass maps like this: http://www.talkingfields.de/eng/products/base_map.php or absoulute biomass liek this: http://www.talkingfields.de/eng/products/biomass_map.php I want to use this for crop monitoring (like talkingfields, but I didn't fiend any useful information about their methods). I using Sentinel 2 data. Do you have any suggestions for me? Or could you offer any free scientific papers which can be useful? Thany you!
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