Topic: Utilities

Topic Description:

Basic R utilities used in many packages and functions, such as date and string manipulations, statistical distributions, geometry of lines and distances. The R package date is required for the two data functions.



File: utilities/geometry.r

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Function: are.ptsinside

Function Description: are.ptsinside

Checks many points (dataframe pt with x and y) against a single quadrat whose corners are given by as xlo, ylo, xhi, yhi. It returns a logical vector, TRUE for the points inside. This is same as insideRectange, but accepting input as a matrix pts and a single vector of the four corners of the rectange.

Function Arguments:

ArgumentDefault Value

Function Source:

are.ptsinside=function(pts,coord)
return(insideRectange(x=pts[,1],y=pts[,2],xrange=coord[,c(1,3)],yrange=coord[,c(2,4)]))

# lowerx=coord[1]# upperx=coord[3]>=pts[,1]
# lowery=coord[2]# uppery=coord[4]>=pts[,2]

# return(lowerx & upperx & lowery & uppery)
# }