yao

I appreciate your reply, and learn much knowledge I have never thought about. thanks you all. I think I understand more about memory allocation now. About add shift register, I change it to feedback node, and got another result. In the second case, the buffer allocate in feedback node, not in subvi, and the excute time reduce from about 1400ms to 360ms in my pc, it's amazing. There is much trick about LabVIEW I should learn.

Sorry about my fool, but it's very difficult to understand. why tunnel of the loop use the buffer allocated by the initialize array, and subVI use the buffer allocated by the indicator, how labview allot to each other. why loop tunnel doesn't use the array subset buffer, this kind buffer allocate is a common sense to you all?

But both example have little black dot on the initialize array, the meanwhile buffer do not allocated? why should I place another component to force allocate buffer, and allocate once. Is initialize array not the same with allocate memory? what the initialize array exact do in labview. :headbang:

hi, all this quesion confuse me for a long time. I already read some like "buffer" or "allocation" topics. I download a example from NI website before, I would like to know why place a indicator is some kind of memory allocation. using initialize array is not allocating first? why this indicator cause large different in the example, please explain to me. if LAVA havd had the familiar discussion, reference to me, thanks.

Is there any function limited of the LabHSM toolkit trial version :question:

Thanks. The article seems a little complicated , i'll try i supplement the opeation method:

hello , i am happy to know the forum, my question is: Suppose that I have designed a program with LabVIEW , deal with some files like .txt , .dat etc. When I press the mouse right key on these files, I can execute the program and load this file automatically the operation method is like pressing the right key on jpg file, and i can use photoshop to open it my english is not good enough to express my thought, if anywhere is not clear, please reply and discuss with me, thx.