View source: R/createSamplingGrid.R
Creates a sampling grid across the continental united states and assign BBS routes to specific a row and column ID.
1 | routes_gridList <- createSamplingGrid(cs = c(1,1))
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cs |
Cell size (in degree lat, long). Default is 0.5 degree long by 0.5 degree lat. In this region, 1 deg latitude ~= 69 miles & 1 deg longitude ~= 55 miles. The total length of a BBS route is ~50 miles. Caution when using degrees < 1 by 1 degree as a single route could fal into multiple cells... |
bbLat |
Min and max (in any order) latitude coordinates for the bounding box. The function removes routes (lat,long) falling outside these coordinates. Default = c(23, 51). See also 'bbLong'. |
bbLong |
Min and max (in any order) longitude for the bounding box. The function removes routes (lat,long) falling outside these coordinates. Default = c(23, 51). See also 'bbLat'. |
country |
One or more of c("CA","USA"). If not specified, will keep grid based on both CA and USA. |
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