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openwrt: only keep the values within the last cutoff secs, not entries, and stuff the time series with nan

This commit is contained in:
Bart Van Der Meerssche 2010-10-01 20:05:05 +02:00
parent 1a2468dc20
commit f8a732c88b
1 changed files with 5 additions and 2 deletions
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7
mote/v1/openwrt/package/flukso/src/data.lua
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@ -70,7 +70,7 @@ end
function truncate(M, cutoff)
for meter, T in pairs(M) do
local H = timestamps(T)
for i = H[1], H[#H]-60 do
for i = H[1], os.time() - cutoff do
T[i] = nil
end
end
@ -80,7 +80,10 @@ function fill(M)
for meter, T in pairs(M) do
local H = timestamps(T)
for i = H[#H]-1, H[1]+1, -1 do
if T[i] == nil then T[i] = T[i+1] end
if T[i] == nil or T[i] == 'nan' then T[i] = T[i+1] end
end
for i = H[#H]+1, os.time() do
T[i] = 'nan'
end
end
end