Find the Last Line & Number of Lines in a Text File

[LaRisa_M]

Overview

This example opens a text file and counts the number of lines, separates the lines into a String array, and then returns the last line in a separate indicator.

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Description

When retrieving data from a file, we often need it in array form.  This VI takes a .txt file and converts it to an array of strings using "Spreadsheet String to Array".  As a bonus, this VI also returns both the number of lines in the .txt file and the last line in the .txt file.

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Requirements: LabVIEW 2012 (or compatible). Hardware: none.

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 Steps to Implement or Execute Code:

1. Download and open file.
2. Select the file to open in the "File Dialog" on the front panel.
3. Run the example.

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 Additional Information or References:

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**This document has been updated to meet the current required format for the NI Code Exchange.**

[crashingsux]

does what requested, but it's not really smart to read the whole file. Better: Use set file and count backwards, until a line feed comes.

[crossrulz]

I don't understand why you are reading the file twice.  Why not just read the file by lines (like you second read, use -1 as the count), get the array size from that, index out the last line?

[DUKMARIVAN]

Hi Crashingsux,

can you please upload a quick example of what you mentioned, how to count backwards until you find an "x" character from the end of a text file.

thanks.

[DUKMARIVAN]

Hi LaRisa_M, could you please upload the example for LV 2011 V11, both files are telling me they're V12 when oppening them on LV 2011.

thanks.