1st I would like to thank you all for the support and existance Mapping Center and present myself with a first topic.
I have a layer theme in ArcGIS from a kart race I tracked with a GPS. This point layer has speed info. My objective is to do what is called a "heating map" showing the speediest areas I have run, something similar to what FIFA has done for football games in the worldcup showing a heating map of where the ball was most of the time (if some of you remember the post).
Can anyone provide some thoughts on how should it be done? Spatial Analyst maybe?
I'm using Arc 9.2.
Mapping Center Answer:
The basic idea would be to treat your GPS points as a single dataset with the primary attribute being velocity at that point. The Spatial Analyst Extension has a set of tools for interpolating point datasets and producing a raster surface that can be symbolized as a heat map. Read through the descriptions of each of the tools and decide which is most appopropriate. Last year we did blog entry called Choosing an appropriate cell size when interpolating raster data that may be helpful for you as well.
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