Alpha Anywhere: Adding Multiple Markers to a Map Using Client-Side Data

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Alpha Anywhere: Adding Multiple Markers to a Map Using Client-Side Data


Action Javascript has a method (in Map Control Actions) to add multiple markers to a map. However, this action assumes that you will be making an Ajax callback to the server to do a query to get the list of latitude/longitude values for each marker you want to add to the map. But what if you already have a list of data on the client-side with latitude/longitude values? Making an Ajax callback to the server under these circumstances is unnecessary.

In this video we show how a List control, which has latitude/longitude values for each row, can be used as the data source for the markers and how a marker for each row in the List can be added to the map without having to make an Ajax callback.

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About Author

Richard Rabins
Richard Rabins

Co-founder of Alpha Software, Richard Rabins focuses on strategy, sales, and marketing. Richard also served as CEO of SoftQuad International from 1997 to 2001, when it owned Alpha. In addition to his 30 years with the company, Richard played a key role as co-founder, and served as president and chairman of the Massachusetts Software Council (now the Massachusetts Technology Leadership Council), the largest technology trade organization in Massachusetts. Prior to founding Alpha, Richard was a project leader and consultant with Information Resources, Inc. (IRI), and a management consultant with Management Decision Systems, Inc. Richard holds a master's degree in system dynamics from the Sloan School at MIT, and a bachelor's degree in electrical engineering and master's degree in control engineering from University of the Witwatersrand in Johannesburg, South Africa. He has served on the boards of Silent Systems, Legacy Technology and O3B Networks, and is co-founder of Tubifi www.tubifi.com.

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