LabVIEW
replace arrary subset is too slow
"Replace array subset" is typically very fast.
Your main problem is the use of global variables inside a loop. I cannot test because I don't have a data file, but the attached modification should speed it up a bit. It limits the constant reading and writing of globals.
You might also consider reading all records outside the loop, replace the while loop with a for loop, and autoindex on the array of records. You should be able to calculate how many records are in the file from the file size.
Your main problem is the use of global variables inside a loop. I cannot test because I don't have a data file, but the attached modification should speed it up a bit. It limits the constant reading and writing of globals.
You might also consider reading all records outside the loop, replace the while loop with a for loop, and autoindex on the array of records. You should be able to calculate how many records are in the file from the file size.
Reading a global always makes a copy in memory. A brief description why globals inside loops are slow can be found HERE.
You might also want to read the NI application note about LabVIEW Performance and Memory Management.
You might also want to read the NI application note about LabVIEW Performance and Memory Management.
