save in a file.txt

[sshika 3]

Hello,

 

with variables of bigreactor, i wan't to write in a table more variables in a txt file, but i wan't to incremente the line to don't erase the last variableS.

 

when i realise it ?

[kevinkk525 8]

sorry i don't understand what you want.

if you want to save a table to a file, this is the code:

serial=require"serialization"
table={}
file=io.open("name","w")
file:write(serial.serialize(table))
file:close()
--or file=io.open("name","a") if you want to append the table instead of overwriting the file

[sshika 3]

i wan't to realize an acquisition

 

example :

t(s);v1;v2;v3
0;1;0;1
1;0,999780683;0,06279052;1,062571203
2;0,99912283;0,125333234;1,124456064
3;0,998026728;0,187381315;1,185408043
4;0,996492859;0,248689887;1,245182746
5;0,994521895;0,309016994;1,30353889
6;0,992114701;0,368124553;1,360239254
7;0,989272333;0,425779292;1,415051625
8;0,985996037;0,481753674;1,467749711
9;0,982287251;0,535826795;1,518114046
10;0,978147601;0,587785252;1,565932853
11;0,973578903;0,63742399;1,611002893
12;0,968583161;0,684547106;1,653130267
13;0,963162567;0,728968627;1,692131194
14;0,957319498;0,770513243;1,72783274
15;0,951056516;0,809016994;1,760073511
16;0,94437637;0,844327926;1,788704296
17;0,937281989;0,87630668;1,81358867
18;0,929776486;0,904827052;1,834603538
19;0,921863152;0,929776486;1,851639637
20;0,913545458;0,951056516;1,864601974
21;0,904827052;0,968583161;1,873410214
22;0,89571176;0,982287251;1,877999011
23;0,886203579;0,992114701;1,878318281
24;0,87630668;0,998026728;1,874333408
25;0,866025404;1;1,866025404
26;0,85536426;0,998026728;1,853390989
27;0,844327926;0,992114701;1,836442627
28;0,832921241;0,982287251;1,815208491
29;0,821149209;0,968583161;1,78973237
30;0,809016994;0,951056516;1,760073511
31;0,796529918;0,929776486;1,726306404
32;0,783693457;0,904827052;1,68852051
33;0,770513243;0,87630668;1,646819923
34;0,756995056;0,844327926;1,601322981
35;0,743144825;0,809016994;1,55216182
36;0,728968627;0,770513243;1,49948187
37;0,71447268;0,728968627;1,443441307
38;0,699663341;0,684547106;1,384210446
39;0,684547106;0,63742399;1,321971096
40;0,669130606;0,587785252;1,256915859
41;0,653420604;0,535826795;1,189247399
42;0,63742399;0,481753674;1,119177664
43;0,62114778;0,425779292;1,046927072
44;0,604599115;0,368124553;0,972723668
45;0,587785252;0,309016994;0,896802247
46;0,570713568;0,248689887;0,819403455
47;0,553391549;0,187381315;0,740772864
48;0,535826795;0,125333234;0,661160029
49;0,518027009;0,06279052;0,580817529
50;0,5;1,22515E-16;0,5
51;0,481753674;-0,06279052;0,418963155
52;0,463296035;-0,125333234;0,337962802
53;0,444635179;-0,187381315;0,257253865
54;0,425779292;-0,248689887;0,177089404

i use a loop,

and in my loop i use  i = i + 1

 

i take some value and i use a string.format in a text variable, and i want to write my text variable on the line i

 

sorry, in english, it's difficult to explain.

[sshika 3]

it's possible to insert 5 tables in the same file ?

[kevinkk525 8]

it is, but you have to think about a way to read it.

if your tables get saved like this:

 {table1};{table2};{table3};

you can read it by doing this:

local file=io.open("filename","r")
local text=file:read("*all")
file:close()
local tables={}
while true do
  local a=text:find(";")
  if a then 
   tables[#tables+1]=serialization.unserialize(text:sub(1,a-1))
    text=text:sub(a+1)
  else 
    break
  end end

Of course your tables shouldn't contain a ";" but you can change that to any symbol.

[sshika 3]

How i save my 5 tables in a format ?

{table1};{table2};{table3};

[dgelessus 26]

This might be what you're looking for. I've added comments (like -- comment) in many places to explain what the code does, you don't need to copy them into your program.

-- Open the file statistics.txt in "w" (write) mode. This will overwrite existing files!
local f = open("statistics.txt", "w")

-- Run this loop 10 times and increase i each time
for i = 1, 10 do
  local a, b, c = -- This data needs to come from your reactor
  
  -- table.concat converts a table to a string, with a string (in this case ";") added between all elements
  local line = table.concat({i, a, b, c}, ";")
  
  -- Write line to f and add a newline at the end
  f:write(line .. "\n")
  
  -- Wait a second between measurements
  os.sleep(1)
end

-- Close the file
f:close()

[kevinkk525 8]

or the easy way without a new line, that will work with my previous code:

function save(table)
  local f=io.open("filename","a")
  f:write(serialization.serialize(table)..";")
  f:close()
end

that will result in adding an entry "{table};" to the file (without overwriting it)