[R] Text in Spatial Polygrams
Jim Burke
javajimburke at gmail.com
Wed Aug 26 00:44:33 CEST 2015
I can do this fine for one polygram BUT a for-loop fails.The concept is
multiple lines within each polygon. I am doing something sub-genius.
ONE POLYGON
plot(all_pcts_osm_sp[i,], add = FALSE, lwd=.5, border='blue')
hght <- strheight("Here")
MyLines <- list(
bquote( .(all_pcts_osm_sp$PCT[i]) ),
bquote( .(all_pcts_osm_sp$First_Name[i]) ),
bquote( .(all_pcts_osm_sp$Last_Name[i]) ),
bquote( .(all_pcts_osm_sp$Phone) ))
text( all_pcts_osm_sp[i,]@polygons[[ 1 ]]@labpt[[1]],
all_pcts_osm_sp[i,]@polygons[[ 1 ]]@labpt[[2]] - (hght * 1.5 *
seq(length(MyLines))),
do.call(expression, MyLines))
ALL POLYGONS JUST DO NOT WORK. PUZZLED? Help me please. Also ultimate
target is an OpenStreet ("OSM") backdrop.
tmp_sp_length <- length(all_pcts_osm_sp)
i = 1
for(i in 1:tmp_sp_length) {
hght <- strheight("Here")
MyLines <- list(
bquote( .(all_pcts_osm_sp$PCT[i]) ),
bquote( .(all_pcts_osm_sp$First_Name[i]) ),
bquote( .(all_pcts_osm_sp$Last_Name[i]) ),
bquote( .(all_pcts_osm_sp$Phone) ))
text( all_pcts_osm_sp[i,]@polygons[[ 1 ]]@labpt[[1]],
all_pcts_osm_sp[i,]@polygons[[ 1 ]]@labpt[[2]] - (hght * 1.5 *
seq(length(MyLines))),
do.call(expression, MyLines))
}
All your comments, ideas, and thoughts are appreciated.
Thanks
Jim Burke
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