Dear list!

I have problem with buffer size (width) in package rgeos. I would like to expand given geometry (points) to specified width based on the z value from attribute table. Here is example:

point <- data.frame(x=c(10,20), y=c(10, 10), z = c(2,7))

point_shp <- SpatialPointsDataFrame(point[,1:2],point)

plot(point_shp, xlim = c(0,30), ylim = c(0,20))
plot(gBuffer(point_shp, width = 5, byid=TRUE, capStyle="ROUND"), add = TRUE, col = "red")
plot(gBuffer(point_shp, width = point_shp@data$z, byid=TRUE, capStyle="ROUND"), add = TRUE, col = "green")


'gBuffer' function ''take into account'' always only first line/cell from table. Any suggestion?

Thanks a lot,

OV

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