How to insert a 1d array line into a 2 d array?
I have a vi that acquire the signals of several pulse encoder and store it into a 1d array, and I want to move these data to a 2d array and fill it. I mean I want to acquire signal and store at line 1 of the 2d array, then acquire again and store at line 2 of the 2d array and keep going like this successively.
how can I do that?
Solved!
Go to Solution.
labvlearner wrote:
I have a vi that acquire the signals of several pulse encoder and store it into a 1d array, and I want to move these data to a 2d array and fill it. I mean I want to acquire signal and store at line 1 of the 2d array, then acquire again and store at line 2 of the 2d array and keep going like this successively.
You need to be careful with the terminology, because there are two very different scenarios:
You have an existing 2D array and you want to insert a column(or row), thus growing one of the dimensions by one and moving everything to the right (or bottom) over one slot. (similar to "insert column" in excel)
You have an existing 2D array (possibly all zeroes at the beginning) and you want to replace an existing column with new data. (many newbies call that "insert" too, even though it is not)
If you know the final size of the 2D array, option 2 will be orders of magnitude more efficient, because it avoids constant memory allocations. Every time (almost) you grow an array, it needs to be recreated at a new memory location because arrays need to be contiguous in memory.
LabVIEW Champion . Do more with less code and in less time .
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