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# distance

Distance between sites

## Description

d = distance(site1,site2) returns the distance in meters between site1 and site2.

example

d = distance(site1,site2,path) returns the distance using a specified path type, either a Euclidean or great circle path.

d = distance(___,Name,Value) returns the distance with additional options specified by name-value arguments.

## Examples

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Create transmitter and receiver sites.

tx = txsite('Name','MathWorks','Latitude',42.3001,'Longitude',-71.3504);
rx = rxsite('Name','Fenway Park','Latitude',42.3467,'Longitude',-71.0972);

Get the Euclidean distance in km between the sites.

dme = distance(tx,rx)
dme = 2.1504e+04
dkm = dme / 1000
dkm = 21.5037

Get the great circle distance between the two sites.

dmg = distance(tx,rx,'greatcircle')
dmg = 2.1451e+04

## Input Arguments

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Transmitter or receiver site, specified as a txsite or rxsite object. You can use array inputs to specify multiple sites.

Measurement path type, specified as one of the following:

• 'euclidean' — Use the shortest path through space that connects the antenna center positions of the sites.

• 'greatcircle' — Use the shortest path on the surface of the earth that connects the latitude and longitude locations of the sites. This path uses a spherical Earth model.

Data Types: char

### Name-Value Arguments

Specify optional pairs of arguments as Name1=Value1,...,NameN=ValueN, where Name is the argument name and Value is the corresponding value. Name-value arguments must appear after other arguments, but the order of the pairs does not matter.

Before R2021a, use commas to separate each name and value, and enclose Name in quotes.

Example: 'Map','siteviewer1'

Map for visualization or surface data, specified as a siteviewer object, a triangulation object, a string scalar, or a character vector. Valid and default values depend on the coordinate system.

Coordinate SystemValid map valuesDefault map value
"geographic"
• A siteviewer objecta.

• A terrain name, if the function is called with an output argument. Valid terrain names are "none", "gmted2010", or the name of the custom terrain data added using addCustomTerrain.

• The current siteviewer object or a new siteviewer object if none are open.

• "gmted2010", if the function is called with an output.

"cartesian"
• "none".

• A siteviewer object.

• The name of an STL file.

• A triangulation object.

• "none".

a Alignment of boundaries and region labels are a presentation of the feature provided by the data vendors and do not imply endorsement by MathWorks®.

Data Types: char | string

## Output Arguments

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Distance between sites, returned as an M-by-N numeric array in meters, where M is the number of sites in site2 and N is the number of sites in site1.

## Version History

Introduced in R2017b