Geolyzer + Hologram Projector trouble

[h245 0]

I recently made my first holographic projector and geolyzer and Ive beent ryting to use them to display a 3d map of the area I'm in. Here's what I'm trying to do:

local component = require("component")\
local geolzyer = component.geolzyer
local hologram = component.hologram

hologram.clear()
for x = 1, 32 do
	for z = 1, 32 do
		local myTable = geolzyer.scan(x,z)
		for y = 1,32 do
			if myTable[y] > 0 then
				hologram.set(x,y,z,1)
			end
		end
	end
end
				

It runs fine for a while, but about 2/3 of the way it gives the following message:

"Attempt to index local 'myTable' (a nil value)" on line 10 (the if statement). Any idea as to what might be causing this?

[jhagrid77 4]

I'm completely new to all of this (programming), but shouldn't it be like this?

local myTable = geolzyer.scan(x,y,z)
		for y = 1,32 do
			if myTable[y] > 0 then
				hologram.set(x,y,z,1)

Just thinking.

[h245 0]

The geolyzer scans an entire column and returns the results for the individual blocks in a table, which are then used in the next if cycle.

Also I figured out the problem.

hologram.clear()
for x = 1, 32 do
    for z = 1, 32 do
        local myTable = geolzyer.scan(x,z)
        for y = 1,32 do
            if myTable then
                if myTable[y] > 0 then
                    hologram.set(x,y,z,1)
                end
            end
        end
    end
end
 

However I ran into a new one. When the whole scan is done, there are vertical holes all the way through. Any idea what might be causing this?

 

Edit: Turns out the holes are the result of the geolyzer not receiving enaugh power and stopping for a moment, thus skipping a column. One capacitor later, everything is runnig as it should.

[jhagrid77 4]

Well I tried to help lol.