Pass 1 row and n columns to represent it as an array. This question assumes that all you have is numerical values, so a cell array is indeed redundant, and it can be converted into a matrix, which is much easier to manipulate. Here you have a cell array that stores both columns of numbers and strings. ġ2:23:15.326 1435742595326 -0.17 0.83 -0.17 4.83. 1 Use repmat to repeat copies of an array. 1 A cell array is an array that can store values of different types. txt file (it's name is saved as variable fName) with data (2 header rows, 5 rows and 2050 columns with data: 1-st column is Time in format hours:minutes:seconds.miliseconds, 2-nd column is a timestamp, all the rest columns are a matrix of numeric data.įile is temporarily available from here. I'm guessing this is not desirable.Consider having a. Obviously, this means you'd have to know exactly how many digits there are in both numbers. You'll see that the first string has its leading whitespace removed (and therefore has 3 characters "too many"), but for some reason, the last string keeps its trailing whitespace. They are similar to those used by the printf function in the C programming language. These operators control notation, alignment, significant digits, and so on. I think this, because if you change yuor format string from '%9f%9f' To convert data to text and control its format, you can use formatting operators with common conversion functions, such as num2str and sprintf. I suspect textscan first trims leading white space, and then parses the format string. Is there any way I can read this string correctly using textscan or another built-in (for performance reasons) MATLAB function? My current workaround is to add commas between the fields and use commas as a delimiter in textscan, but that's slow and not a nice solution. Surprisingly, if we add a minus, we don't get an error, but a wrong result: dat = textscan(' -9574865.0E+10 ','%9f %9f','Delimiter','','CollectOutput',true,'ReturnOnError',false) Trouble reading floating point number from file (row 1u, field 2u) => E+10 These conversion specifiers determine the type. The default format of files written by the save command can be controlled using the functions savedefaultoptions and saveprecision. MATLAB parses the data into fields and converts it according to the conversion specifiers in the format string. The following error is returned: Error using textscan The save and load commands allow data to be written to and read from disk files in various formats. You can read all the blocks as cell arrays, one block at a time, using textscan. Each block within the file can have a different format. The problem can be replicated like this: dat = textscan(' 9574865.0E+10 ','%9f %9f','Delimiter','','CollectOutput',true,'ReturnOnError',false) This example shows how to read numeric data organized in blocks in a text file. I would like to read two numbers from this: 957486 5.0E+10 Textscan fails at a certain line containing the string: ' 9574865.0E+10 ' The output of textscan is a cell array (myData) where each cell contains the values from a single column. For a string, it indicates how many characters were read. textscan also allows you to read multiple lines and to skip any columns you don’t need. I'm reading fixed-width (9 characters) data from a text file using textscan. textscan allows you to specify the format of a line of data up-front so that you don’t have to manipulate strings unnecessarily.
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