Reading input file matlab

Now that your file has been selected, you have several options through which to import. While this function will soon be decremented, it still serves a nice purpose.

We can specify a delimiter, and then parse out the header and data using cellfun. Well now the code is a little bit longer, and you need to specify before hand how many columns of data you want as well as how many header lines are in the file. This method might be useful if you want to manually select only certain columns and even start at a later row, but does require knowledge of your data file.

It appears that all the rows have one parameter input except for the last one which is a vector:. Also, I think you want to concatenate along the first dimension rather than the second. You have to filter your strings a bit e. From the Container class doc :. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 7 years, 1 month ago. Active 7 years, 1 month ago.

Viewed times. It would be much better if you included real data. Transpose the array so that A matches the orientation of the data in the file. Also return the number of values that fscanf reads. A is a vector containing the numeric values in the file. File identifier of an open text file, specified as an integer.

Before reading a file with fscanf , you must use fopen to open the file and obtain the fileID. Format of the data fields in the file, specified as a character vector or string scalar of one or more conversion specifiers. When fscanf reads a file, it attempts to match the data to the format specified by formatSpec.

This table lists available conversion specifiers for numeric inputs. If the initial digits are 0x or 0X , then the values are hexadecimal base Read any single character, including white space. To read multiple characters at a time, specify field width. If formatSpec contains a combination of numeric and character specifiers, then fscanf converts each character to its numeric equivalent. To specify the maximum number of digits or text characters to read at a time, insert a number after the percent character.

Dimensions of the output array, A , specified as Inf , an integer, or a two-element row vector. File data, returned as a column vector, matrix, character vector or character array.

The class and size of A depend on the formatSpec input:. If formatSpec contains only numeric specifiers, then A is numeric. If you specify the sizeA argument, then A is a matrix of the specified size.

Otherwise, A is a column vector. If the input contains fewer than sizeA values, then fscanf pads A with zeros. If formatSpec contains only bit signed integer specifiers, then A is of class int If formatSpec contains only bit unsigned integer specifiers, then A is of class uint If you specify sizeA and the input contains fewer characters, then fscanf pads A with char 0. If formatSpec contains a combination of numeric and character specifiers, then A is numeric, of class double , and fscanf converts each text characters to its numeric equivalent.

The class of A depends on the values that fscanf reads before it stops processing. Format specifiers for the reading functions sscanf and fscanf differ from the formats for the writing functions sprintf and fprintf. The reading functions do not support a precision field.

The width field specifies a minimum for writing but a maximum for reading. You specify the encoding when you open the file using the fopen function. For MEX code generation, the code generator treats fscanf as an extrinsic function. The input argument formatSpec must be a constant.