In the previous video, you learned how to write data to an external file. In this video, learn how to read values from an external file into a MATLAB variable.
- [Instructor] In the previous movie,…I showed you how to write data to an external file.…In this movie,…I will show you how to read values from an external file…into a MATLAB variable.…I have just started MATLAB…and I have a clean command window ready to go.…So the first thing I need to do is create a file…with some values.…I'll start by defining a variable called mat1,…and then an equal sign for the assignment,…and I will create the first row…with the values four through 16…going up in increments of four.…
So I'll type four then a colon,…my step value is four colon,…and the top value is 16.…Then a semicolon to indicate I have a new row,…and then we'll do five through 20…going up by five for the second row.…So five colon five colon 20.…Right square bracket and Enter,…and there I get my two by four matrix.…If I want to save these values in a file,…then I'd need to use the save function.…A space, then I will call the file matrixdata.dat.…
I don't need to add the extension.…It can just be matrixdata.…But when someone looks at it in the current folder,…
Author
Curt Frye
Released
8/28/2018- Defining variables and contains
- Exploring operators
- Summarizing with built-in functions
- Generating random numbers
- Defining vectors and matrices
- Accepting input in scripts
- Writing and reading data from external files
- Creating custom functions
- Using conditional logic
- Repeating operations with loops
- Working with text strings
- Plotting data and function output
- Formatting, saving, and printing plots
- Using statistical and matrix functions
Skill Level Intermediate
Duration
Views
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Introduction
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What you should know1m 6s
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1. Starting Out with MATLAB 2018
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Define ranges of values4m 45s
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Generate random numbers5m 35s
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Get help in MATLAB4m 11s
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2. Managing Vectors and Matrices
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Define vectors and matrices5m 56s
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3. Creating MATLAB Scripts
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Create a MATLAB script7m 33s
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4. Conditional Logic and Loops
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Use is statements3m 45s
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5. Managing Strings and Data Structures
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Define string variables2m 9s
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Concatenate strings3m 12s
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Convert strings to numbers4m 22s
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6. Performing Advanced Plotting and Statistical Analysis
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Create other plot types10m 11s
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Format plot elements4m 56s
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Save and print plots3m 18s
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Conclusion
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Further information1m 6s
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Video: Load values from a file into a script