Connexions

You are here: Home » Content » Additional Exercises for Strings and FileI/O
Content Actions
Lenses

What is a lens?

Lenses

A lens is a custom view of Connexions content. You can think of it as a fancy kind of list that will let you see Connexions through the eyes of organizations and people you trust.

What is in a lens?

Lens makers point to Connexions materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

Who can create a lens?

Any individual Connexions member, a community, or a respected organization.

This content is ...
Affiliated with (?)
This content is either by members of the organizations listed or about topics related to the organizations listed. Click each link to see a list of all content affiliated with the organization.

  • This module is included in aLens by: National InstrumentsAs a part of collection:"LabVIEW Graphical Programming Course"

    Comments:

    "A full introductory course on programming with LabVIEW."

    Click the "National Instruments" link to see all content affiliated with them.

    National Instruments
Also in these lenses

  • This module is included inLens: Connexions Books Available for Print on Demand
    By: ConnexionsAs a part of collection:"LabVIEW Graphical Programming Course"

    Comments:

    "This book is available through the Connexions beta version of print-on-demand from online materials."

    Click the "Printable Books" link to see all content selected in this lens.

    Printable Books
Tags

(?)

These tags come from the endorsement, affiliation, and other lenses that include this content.

Additional Exercises for Strings and FileI/O

Module by: National Instruments

Problem 1
Build a VI that generates a 2D array of 3rows× 100 columns 3 rows 100 columns of random numbers and writes the data transposed to a spreadsheet file. Add a header to each column. Use the high-level File I/O VIs located on the File I/O palette.
tip: Use the Write Characters To File VI to write the header and the Write To Spreadsheet File VI to write the numeric data to the same file.
Save the VI as More Spreadsheets.vi in the C:\Exercises\LabVIEW Basics I directory.
Problem 2
Build a VI that converts tab-delimited spreadsheet strings to comma-delimited spreadsheet strings, that is, spreadsheet strings with columns separated by commas and rows separated by end of line characters. Display both the tab-delimited and comma-delimited spreadsheet strings on the front panel.
tip: Use the Search and Replace String function.
Save the VI as Spreadsheet Converter.vi in the C:\Exercises\LabVIEW Basics I directory.
Problem 3
Modify the Temperature Logger VI so the VI does not create a new file each time you run the VI. Append the data to the end of the existing temp.dat file that the Temperature Logger VI created. Run the VI several times and use a word processor application to confirm that the VI appended new temperature readings.
tip: Delete the Format Into File function and replace it with the Format Into String and Write File functions. Use the pos mode and pos offset parameters of the Write File function to move the current file mark.
Select File>>Save As to save the VI as Temperature Logger 2.vi in the C:\Exercises\LabVIEW Basics I directory.

Comments, questions, feedback, criticisms?

Discussion forum

Send feedback