How to write a comment in matlab variables

This is machine translation Translated by Mouseover text to see original. Click the button below to return to the English version of the page. This page has been translated by MathWorks.

How to write a comment in matlab variables

Edit Please don't do this! You will find that MATLAB arrays either numeric or cell will let you do the same thing in a much faster, much more readable way.

For example, if A1 through A10 contain scalars, use: In case each Ai contains a vector or matrix, each with a different size, you want to use cell arrays, which are intended exactly for this: And be sure to use the curly braces for the subscript, not parentheses!

See the FAQ entry on cells if this is still unclear to you. Another approach is to use structures with dynamic field names instead of cell arrays.

The fields of the structure can be the variable names you want. And you can index into them with dynamic field references. You can assign anything to the field such as a scalar, an array, a string, another structure, a cell array, or whatever you want.

In this example we just assigned the integer in the index variable. Now, if you still really want to go against our advice and create variables with dynamically generated names, you need to use the eval function. So in a loop, you could use: It could be made possibly clearer to split it up into multiple lines: The fact that a variable named sin existed at runtime is irrelevant; the parsetime "decision" takes precedence.

What frustrates you about MATLAB?

Even in that case, you can avoid eval by using dynamic field names of a structure: Edit We present two ways of doing this: If the files that you want to process are sequentially numbered, like "file1.

Also note the three different ways of building the file name - you can use your favorite way. Files are in the current directory. You should save them to an array or cell array if you need to use them outside the loop, otherwise use them immediately inside the loop.

The second method is if you want to process all the files whose name matches a pattern in a directory. You can use the DIR function to return a list of all file names matching the pattern, for example all. Warn user if it doesn't.

how to write a comment in matlab variables

The following folder does not exist: Or you can try a "File Exchange Pick of the Week": How do I sort file names numerically?

If you call the dir function to get file information including file nameslike this: How do I fix the error "Subscript indices must either be real positive integers or logicals. This means that the following is permitted: Note that zero is only permitted as an index if it's not really an integer or double zero, but really "false" - a logical data type.

Related Content

The reason is that the indexes refer to rows and columns in the array. So while you can have row 1 or column 3, you can't have row 3. To fix the error you must make sure that your indexes are real, positive integer numbers, or logicals. They can be scalars single numbers or vectors or arrays of many numbers.

You might take the expression for your index and make it into a single variable, like myIndexes, and then examine that in the variable editor or use code like this to figure out it's real data type and value: The official Mathworks answer to this question can be found here: Edit You cannot mix a script and function s in the same m-file.

You can have a script, and that script can call functions in other m-files, or you can have all functions with no script at all. Most likely you have forgotten to include the "function" keyword and the name of your m-file as the first executable line of your m-file.

If you do that, it will probably work. See the following examples:MATLAB Advanced GUI Development [Scott T. Smith] on plombier-nemours.com *FREE* shipping on qualifying offers. After more than 20 years of development, MATLAB has evolved from a powerful matrix calculation application into a universal programming tool used extensively within scientific and engineering communities both commercial and academic.

MATLAB versions 6.x and 7.x include functionality for. Anytime MATLAB encounters a percent sign (%), it treats the rest of the line as a comment.

Comments are simply text that is used either to describe what is happening in a script or to comment out lines of code that you don’t want to execute.

Intuitive Probability and Random Processes using MATLAB® is an introduction to probability and random processes that merges theory with practice.

Based on the author’s belief that only "hands-on" experience with the material can promote intuitive understanding, the approach is to motivate the need for theory using MATLAB examples, followed by theory and analysis, and finally descriptions of.

Many times a scientist is choosing a programming language or a software for a specific purpose. For the field of scientific computing, the methods for solving differential equations are one of the important areas. It doesn't matter how difficult writing that code is.

The user had a reasonable doubt regarding Matlab syntax and you decide whether you wish to solve it or not, that's all. Text Position. Add text next to a particular data point using the text function.

In this case, add text to the plombier-nemours.com first two input arguments to the text function specify the .

FAQ | MATLAB Wiki | FANDOM powered by Wikia