Another novice question...I opened a file used "Concatenate String" to write to file creating headers and so forth...a "While Loop" routine is m

Question

onitoring a voltage and storing it to the same file under the associated header...What I'm having problems doing is after the loop is completed I need to write the MIN\MAX values of the voltage that was monitored in the "While Loop" once it completes. I juBefore the loop the "Concatenate String" peforms the following... line1 col.1 in an excel file is (Tester then Line1 col.2 (the testers name appears) next is a end of line. Then Line2 col.1 is (DATE)header then col.2(TIME)header then col.3(throttle voltage output)header then col.4(MAX VOUT)header then col.5(MIN VOUT) as i said this is perform before the loop with no pr
oblem. Next during the "While Loop" the actual information for the DATE,TIME,Throttle voltage output,are inserted into Line 3 under the associated header with no problem. What I need to do is wait until the "While Loop" has completed to then store the MAX/MIN, but I can't seem to get the information to end up under the associated header. What do I need to set/use to accomplish this task? Thanks I've attached an excel spread sheet to give an example of where I need the values to be stored.
Attachments:
test1.txt ‏1 KB

Answer 1

onitoring a voltage and storing it to the same file under the associated header...What I'm having problems doing is after the loop is completed I need to write the MIN\MAX values of the voltage that was monitored in the "While Loop" once it completes. I juThis can become hard depending on how much data you will be writing. If you could wait and write the data all at one at the end of the while loop it becomes easier. The problem is that when you write a file it writes it in rows of data not columns. I will attach an example (LabVIEW 6.0) that demonstrates how to do this. It is a hard to describe in text. Basically I create the new columns of data and write empty strings to them on each iteration of the while loop except for the first iteration. The first iteration I write a Max? and Min? into the column information. After the while loop is completed I search the array for Max? and Min? and replace it with the appropriate min and max values.
Attachments:
append_column.vi ‏47 KB