British national grid reference (NGR) distances
Calculates the euclidean distance between two british national grid reference points using the pythagorean method
NGRDist(i, j)
i |
a numeric vector of length two. The first being the easting and the second being the northing of the first site |
j |
a numeric vector of length two. The first being the easting and the second being the northing of the second site |
Note, that the result is converted to km when six digits are used for easting and northing, when six digits would usually provide a result in metres.
A distance in kilometres (if six digits for easting and northing are used)
Anthony Hammond
#Calculate the distance between the catchment centroid for the #Kingston upon Thames river gauge and the catchment centroid for the #gauge at Ardlethen on the River Ythan. First view the eastings and northings GetCDs(10001) GetCDs(39001) NGRDist(i = c(381355, 839183), j = c(462899, 187850))
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