At minimum, tspan must be a two element vector [t0 tf] specifying the initial and final times.

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.

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. The following folder does not exist:xlswrite. Write Microsoft Excel spreadsheet file .xls)Syntax. xlswrite('filename', M) xlswrite('filename', M, sheet) xlswrite('filename', M, 'range') xlswrite. Diagonal. Create a diagonal matrix.

With this option, diagonal matrices can be created with diagonal elements taken from a list, or computed by a function or a functional expression..

matrix(m, n, List, Diagonal) creates the m×n diagonal matrix whose diagonal elements are the entries of attheheels.com inv performs an LU decomposition of the input matrix (or an LDL decomposition if the input matrix is Hermitian).

It then uses the results to form a linear system whose solution is the matrix inverse inv(X). Basics of Image Processing Sight/vision is one of the greatest powers of a human being. Our eyes can tell us the shape, size, color of any and everything which comes in front of attheheels.com Image is a 2 D light intensity function f(x,y).

Defining Matrices¶. Defining a matrix is similar to defining a vector (Introduction to Vectors in Matlab).To define a matrix, you can treat it like a column of row vectors (note that the spaces are required!). The Matlab functions provided in the table below make it very easy and straightforward to generate samples of reverberant audio data for a source moving across a .

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Matlab code for image-source model in room acoustics, Eric A. Lehmann