Keithley 2651A Reference Manual page 271

Model 2651A High Power System SourceMeter® Instrument Reference Manual
Example: Numeric for
list = {"One", "Two", "Three", "Four", "Five", "Six"}
---------- For loop -----------
print("Counting from one to three:")
for element = 1, 3 do
print(element, list[element])
end
print("Counting from one to four, in steps of two:")
for element = 1, 4, 2 do
print(element, list[element])
end
The numeric for loop repeats a block of code while a control variable runs through an
arithmetic progression.
Output:
Counting from one to three:
1.000000000e+00
2.000000000e+00
3.000000000e+00
Counting from one to four, in steps of two:
1.000000000e+00
3.000000000e+00
Example: Generic for
days = {"Sunday",
"Monday",
"Wednesday",
"Friday",
for i, v in ipairs(days) do
print(days[i], i, v)
end
The generic for statement works by using functions called iterators. On each iteration, the
iterator function is called to produce a new value, stopping when this new value is nil.
Output:
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
2651A-901-01 Rev. A / March 2011
One
Two
Three
One
Three
"Tuesday",
"Thursday",
"Saturday"}
1.000000000e+00 Sunday
2.000000000e+00 Monday
3.000000000e+00 Tuesday
4.000000000e+00 Wednesday
5.000000000e+00 Thursday
6.000000000e+00 Friday
7.000000000e+00 Saturday
Section 6: Instrument programming
6-27