Reading and writing binary files in matlab
The quickest means of saving and retrieving reading and writing binary files in matlab is through the binary. Since analyzing data is one of the more common motivations for using input output I will start with reading and writing from a spreadsheet.
I cover the command line first since it is often necessary to import the data reading and writing binary files in matlab an m-function is being evaluated. It has the built in command "xlsread". To use the xlsread function use the syntax:. This line of code reads filename. You can then manipulate the array g any way you want. Make sure that the file you choose is in the same directory were you save your M-files usually the work directory otherwise you get an error.
You can specify the path to a file but, this can get messy. To write data to an. The xlswrite command below creates a spreadsheet called filename. There are several ways to write to a file. The simplest way I have found is. You can substitute reading and writing binary files in matlab.
Also, there might be some issues with formatting in Excel. The formatting issues can usually be handled inside Excel but if they can't you might have to play around with the fopen command parameters. This is pretty similar if not the same way you would write to a file in C. This works only if the text is entirely numerical, without special formatting. Otherwise you get an 'unrecognized character' error.
Usually there are no formatting difficulties with plain text files. For reading more general text files, MATLAB does not have a function to do it easily unless you have excelbut you can read very general text files with different delimiters for both cells and text within cells using the "textread. You can also try to use fscanf if the formatting is consistent enough i. Then, choose what column separators are present by selecting the appropriate radio button.