show npart instead of ndeath

tawk '{OFS="\t";gsub(/-.*/,"0",$24);gsub(/-.*/,"0",$23); if( $23 > 0 ) print $1,$23,$39,$40}' SCAD.csv | sponge SCAD.csv
make SCAD idw starting with CSV.
use npart rather than ndeath.
runs in 18s!
awesome

time sh -c 'incsv=SCAD.csv; rowscols="1498 1436"; inshp=SCAD.shp; rm $( basename $inshp .shp ).{shp,shx,dbf,prj} 2>/dev/null; csv2shp.sh -c $incsv -y latitude -x longitude -s $inshp; gdal_grid -outsize $rowscols -a invdist:power=2.0:smoothing=1.0 -zfield "npart" $inshp -l $(basename $inshp .shp) $(basename $inshp .shp).tif && gdalwarp -co compress=deflate -co tiled=yes -r lanczos -cutline africa_boundary.shp -srcnodata 0 -dstnodata 0 SCAD.tif SCAD_idw.tif'