Last week, you used a server-drawn image from a WMS to display your business layer (the farmers markets). This week, you'll learn about an alternative way to display your business layers on the map, namely, sending the raw data to the client (such as a web browser) to be drawn. This is a common technique in many web maps that can provide for much interactivity and potentially faster performance if used appropriately. You may have even been exposed to this practice when you reviewed a web map for your assignment last week. This lesson describes two common formats used for sending vector GIS data to the browser (KML and GeoJSON) and shows how you can add these types of layers in OpenLayers. This courseware module is part of Penn State's College of Earth and Mineral Sciences' OER Initiative (link is external). Except where otherwise noted, content on this site is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License (link is external). The College of Earth and Mineral Sciences is committed to making its websites accessible to all users, and welcomes comments or suggestions on access improvements. Please send comments or suggestions on accessibility to the site editor (link sends e-mail). The site editor may also be contacted with questions or comments about this Open Educational Resource. The John A. Dutton e-Education Institute is the learning design unit of the College of Earth and Mineral Sciences (link is external) at The Pennsylvania State University (link is external). 2217 Earth and Engineering Sciences Building, University Park, Pennsylvania 16802 (link is external) 877-778-4471 | Contact Us Privacy & Legal Statements (link is external) | Copyright Information (link is external) The Pennsylvania State University © 2014 Source.