![]() ![]() Note that the empty fields results in NaN values. While ~isequal(nextLine, -1) % Loop while not at the end of the file csvread() only gets along with integer values. I used readtable () and table2array functions in order to get an array of string values. My problem is that my CSV-file contains almost only Strings and some integer values, so that csvread() doesn't work. csv file to MATLAB Ask Question Asked Viewed 873 times 0 I want to import string values from a. NextLine = fgetl(fid) % Read the first line from the file I'm working with MATLAB for few days and I'm having difficulties to import a CSV-file to a matrix. LineIndex = 1 % Index of cell to place the next line in In the first syntax, we use a simple syntax to read CSV files, here M is used for an array that must contain integer values, and specified CSV file name means actual file name that we need to read in Matlab. Theme Copy T readtable ('myfile. Explanation Basically, there is multiple syntaxes to read CSV files in Matlab as shown. The readtable function automatically detects the header and the number of lines to skip. M csvread (filename,R1,C1) reads data from the file starting at row offset R1 and column offset C1. To import data from a CSV file into MATLAB use the readtable function. The file must contain only numeric values. LineArray = cell(100, 1) % Preallocate a cell array (ideally slightly M csvread (filename) reads a comma-separated value (CSV) formatted file into array M. If you do want to retain the strings instead and do the conversion later (or perhaps don't need them any other way) it should be obvious where to replace the formatting to do so. Here is the resulting code, placed in a function read_mixed_csv: function lineArray = read_mixed_csv(fileName, delimiter)įid = fopen(fileName, 'r') % Open the file Note there's a new d formatting string with latest release to parse dates on input directly I don't have past R2012b so return the m/d/y and h/m/s as numerics above. Then I used the function textscan to parse each line into separate strings using a predefined field delimiter and treating the integer fields as strings for now (they can be converted to numeric values later). I first used the function fgetl to read each line of the file into a cell array. However, if you don't know a priori how many columns are in your file, you can use a more general approach like I did in the following function. Just like the picture below shows, I import all the variables into a matrix 'X', then I would like to import the header one by one to rename all the columns. ![]() You can represent this data in MATLAB as tables, timetables, matrices, cell arrays, or string arrays. Text files often contain a mix of numeric and text data as well as variable and row names. For the case when you know how many columns of data there will be in your CSV file, one simple call to textscan like Amro suggests will be your best solution. 1 I want to import a row of headers form Excel into matlab then put each header into its according variable's name in MATLAB. MATLAB can read and write numeric and nonnumeric data from delimited and formatted text files, including. ![]()
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