View difference between Paste ID: eqNRB7wa and SvHHidWb

 local component = require("component")
 if not component.isAvailable("geolyzer") then
   io.stderr:write("This program requires a Geolyzer to run.\n")
   return
 end
 if not component.isAvailable("hologram") then
   io.stderr:write("This program requires a Hologram Projector to run.\n")
   return
 end
 
 local sx, sz = 48, 48
 local ox, oz = -24, -24
 local starty, stopy = -5
 local scale
 
 local function validate(value, min, max, default)
   value = tonumber(value) or default
   if value < min or value > max then
     io.stderr:write("invalid y coordinate, must be in [" .. min .. ", " .. max .. "]\n")
     os.exit(1)
   end
   return value
 end
 
 do
   local args = {...}
   starty = validate(args[1], -32, 31, starty)
   stopy = validate(args[2], starty, starty + 32, math.min(starty + 32, 31))
   scale = validate(args[3], 0.33, 3, 1)
 end
 
 component.hologram.clear()
 component.hologram.setScale(1)
 for x=ox,sx+ox do
   for z=oz,sz+oz do
     local hx, hz = 1 + x - ox, 1 + z - oz
     local column = component.geolyzer.scan(x, z, false)
     for y=1,1+stopy-starty do
       local color = 0
       if column then
         local hardness = column[y + starty + 32]
         if hardness == 0 or not hardness then
           color = 0
         elseif hardness < 3.4 && hardness > 2.6 then
           color = 2
         else
           color = 0
         end
       end
       if component.hologram.maxDepth() > 1 then
         component.hologram.set(hx, y, hz, color)
       else
         component.hologram.set(hx, y, hz, math.min(color, 1))
       end
     end
     os.sleep(0)
   end
 end