Formulae: Linear or Euclidean distance between two geographic points?

SimonaP · May 15, 2014 8:45AM

Hi,
I need your support... I would like to know if it is possible to calculate with Omniscope the Euclidean distance.

I will try to explain myself better exposing the client specification request:

“Analysis of the coverage of the service on the territory: through a spatial representation directly on the map should be possible to analyze how the assisted away (distance Euclidean) from the shelters according to their concentration in a geographic area.”

Thanks, Simona

daniel · May 15, 2014 9:13AM

Here are a couple of examples of doing Euclidean distance using the LAT_LON_DISTANCE function:

http://forums.visokio.com/discussion/comment/7523/#Comment_7523

http://forums.visokio.com/discussion/comment/4675/#Comment_4675

The generally work by referring to a point and doing the calculation over a series of points shown in the data manager flows.

However from your specification it sounds a bit like you want to draw the regions themselves as shapes/areas? If that's the case you may need to use R or ArcGIS to create shapefiles which can then be loaded into Omniscope.

There's also now a iGeolise travel time connector that will draw travel time shapes which would be area based.

paola · May 28, 2014 12:50PM

Here is a simple demo file illustrating the function, calculating distance between London and capital cities around the world.
Destination Lon/Lat field values in this formula can be replaced with another set of coordinates to calculate new set of distances from a fixed location.
LAT_LON_DISTANCE([Place latitude (Y)],[Place longitude (X)], [Destination Latitude], [Destination Longitude])

	DistanceFromLondon.JPG	190K
	Distancefrom_London.iok	835K

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