GIS Build Sophisticated Webmaps using Leaflet, OpenLayers and More part4
Build Sophisticated Webmaps using Leaflet, OpenLayers and More
Rich web maps can use open-source JavaScript libraries like Leaflet.js to really bring them to life:
JavaScript libraries are code someone else has written to make life easier for the rest of us. This is the same how Python modules are distributed. JQuery, three.js and bootstrap are examples of JavaScript libraries in use today.
When you use Leaflet, you can build your own web map from this JavaScript library. This is why JavaScript is so good with interactive viewing in GIS.
Leaflet.js is well documented and easy to learn. You can do almost anything with JavaScript from spatial analysis to robust basemap servers.
…As technology improves, web development is going to require using 3D visualizations tools such as WebGL.
Here are a couple of courses to fine-tune your GIS programming skills:
- Open Source Web Mapping (Penn State Open CourseWare) – Use free and open source software (FOSS)for creating web maps online. (Open Web Mapping with QGIS, GDAL, OGR, GeoServer, TileMill and OpenLayers)
- OpenLayers 3 Examples – Code examples of clusters, animations, GeoJSON, heatmaps, WebGL and more. (OpenLayers 3 Examples)
You won’t truly learn how to create dynamic web maps unless you apply it.
Test your knowledge with a more complex web map project. For example, make a web map with at least 2 toggleable layers.
From this project hopefully you will find why HTML, CSS, JavaScript, XML, JQuery and AJAX are valuable in web development.
As GIS technology shifts to the cloud, web development may just be the better career choice.
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