Tag Archives: maps

Mapping

More on maps:

http://www.tableausoftware.com/support/forum/topic/map-shapefiles-and-points
http://www.tableausoftware.com/support/knowledge-base/polygon-shaded-maps
http://downloads.tableausoftware.com/quickstart/feature-guides/bkimages.pdf
http://www.tableausoftware.com/support/knowledge-base/polygon-shaded-maps

Dual Axis Maps

video by Joe Mako: http://www.tableausoftware.com/support/forum/topic/map-shapefiles-and-points

Background images

Can use a point annotation with the X & Y coordinates as the label, then drag the annotation around to ID points on the image that can be used to create the custom polygons. (Speeds up the process).

Also for finding X/Y positions: Point Position is a freeware tool for PCs that will find X/Y coordinates on screen.

Geocoders

https://webgis.usc.edu/Services/Geocode/About/GeocoderList.aspx
http://www.gpsvisualizer.com/geocoder/

Batch geocoder that Shawn recommends, for up to 1K addresses at a time:
http://www.findlatitudeandlongitude.com/batch-geocode/#.UFHpmo2PWSo

Latitude/longitude finder
http://community.tableausoftware.com/thread/119855

Can also do stuff w/Tableau’s data
http://community.tableausoftware.com/ideas/1488

free zip code DB
http://federalgovernmentzipcodes.us/

Shapefiles

http://datalicious.sharedby.co/share/7W7ksf

Zip Code Radius Finder

Also links to Richard Leeks’ geohack work
http://community.tableausoftware.com/thread/117607

Concentric circles
http://community.tableausoftware.com/thread/110652#comment-43605

Richard Leeke post on binning latitude/longitude data in different ways:
http://community.tableausoftware.com/message/179505#179505

http://www.tableausoftware.com/community/support/kb/mapping-datapoints-google-maps

pic, and lat/long for arbitrary points
http://www.gorissen.info/Pierre/maps/googleMapLocation.php?lat=44.087585&lon=-70.224609&setLatLon=Set

address to lat/long lookup:
http://itouchmap.com/latlong.html

Jittering map points
http://community.tableausoftware.com/message/227745

Great Circle routes – Flight path type maps
http://www.tableausoftware.com/support/forum/topic/flight-path-type-maps

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Creating a Dynamic “Parameter” with a Tableau Data Blend

As of June 2015, Tableau is actively looking at different aspects of the (complicated) subject of dynamic parameters. See Dynamic Parameters: The Results are In for an overview, and Dynamic Parameters Update for continuing updates.

Currently (July 2013), the #1 most-voted-for Idea for Tableau is Dynamic Parameters. Here, I’ll show you a technique for using Tableau data blending to create a dynamic, data-driven “parameter”. We’re going to use a loosely coupled secondary data source to get the information associated with the “parameter” and return that information to the primary data source, where it can be used in further calculations. Some examples of where this can be useful:

  • Choose one value to build a comparison to other values, such as finding the distance from a chosen origin city to a set of destination cities, or a market basket-type analysis where we want to compare one against others.
  • Set the limits and input data to an algorithm that is then used to create other results, for example to get a starting set of data to use to build a projection, such as an executive retirement forecast model.

Read on for a description of the technique and demos of all three options!

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