NoOverlap: Shift Symbols

In GEOmap: Topographic and Geologic Mapping

Shift Symbols

Description

Shift Symbols such that there is no overlap

Usage

NoOverlap(x, y, focsiz, SEL = 0, OLDx = 0, OLDy = 0, cenx = 0, ceny = 0)

Arguments

x	x-location
y	y-location
focsiz	symbol size
SEL	selection of which symbols to shift
OLDx	x-locations of origin
OLDy	y-locations of origin
cenx	center x
ceny	center y

Details

Program is used for finding positions for exploding. A vector is dcalculated from each origin to each point and explosions are projected along these directions until a position is found that does not overlap. The position is nudged by a value of focsiz at each step. If OLDx and OLDy are not provided, cenx and ceny are used as origin points.

Value

x,y list of new positions

Author(s)

Jonathan M. Lees<[e-mail]>

See Also

ExplodeSymbols

Examples

 draw.circ<-function (x, y, r, ...) 
      {
        CI = RPMG::circle(1)
        for (i in 1:length(x)) {
          Cx = x[i] + r * CI$x
          Cy = y[i] + r * CI$y
          lines(c(Cx, Cx[1]), c(Cy, Cy[1]), type = "l", ...)
        }
      }
 

 x = rnorm(20)
    y = rnorm(20)

    rx = range(x)
    ry = range(y)

    drx = diff(rx)
    dry = diff(ry)
    XPCT=.2
    rx = c(rx[1]-XPCT*drx, rx[2]+XPCT*drx)
    ry = c(ry[1]-XPCT*dry, ry[2]+XPCT*dry)



   plot(rx , ry , type='n', asp=1, xlab="km", ylab="km")

    u = par("usr")

focsiz = 0.04* (u[2]-u[1])

   draw.circ(x, y, focsiz, col='red')
 NXY = NoOverlap(x,y,focsiz)

 plot(rx , ry , type='n', asp=1, xlab="km", ylab="km")

    u = par("usr")

focsiz = 0.04* (u[2]-u[1])


draw.circ(NXY$x, NXY$y, focsiz, col="blue" )

    segments(x,y,NXY$x, NXY$y)
   

GEOmap documentation built on Sept. 1, 2023, 5:09 p.m.