Writing a matrix to a text file in matlab

When I try writing to a txt file in matlab it fills all the display. How to do it? Accepted Answer. DGM on 12 Jan at Cancel Copy to Clipboard. Edited: DGM on 12 Jan at Ran in:. I'm no wizard with fprintf , but this is one way to deal with it. Alternatively, you could avoid the use of the cell array might be faster.

Just to verify that all the pixels are right , could you please give the code to reconstruct the same image from the text file? DGM alrededor de 11 horas ago. Name is the argument name and Value is the corresponding value. Name must appear inside quotes. You can specify several name and value pair arguments in any order as Name1,Value1, Type of file, specified as the comma-separated pair consisting of 'FileType' and a character vector or string containing 'text' or 'spreadsheet'.

The 'FileType' name-value pair must be used with the filename input argument. You do not need to specify the 'FileType' name-value pair argument if the filename input argument includes a standard file extension.

The following standard file extensions are recognized by the writing function:. Example: 'FileType','spreadsheet'. Locale for writing dates, specified as the comma-separated pair consisting of 'DateLocale' and a character vector or a string scalar. When writing datetime values to the file, use DateLocale to specify the locale in which writematrix should write month and day-of-week names and abbreviations.

For a list of common values for the locale, see the Locale name-value pair argument for the datetime function. The writing function ignores the 'DateLocale' parameter value whenever dates can be written as Excel-formatted dates.

Writing mode, specified as the comma-separated pair consisting of 'WriteMode' and a character vector or a string scalar. Select a write mode based on the file type. If the file you specified does not exist, then the writing function creates and writes data to a new file.

The writing function does not alter any data outside of the range occupied by the input data. If you do not specify a sheet, then the writing function clears the first sheet and writes the input data to it. If you do not specify a sheet, then the writing function appends the input data to the bottom of the occupied range of the first sheet.

If you do not specify a sheet, then the writing function removes all other sheets from the file, and then clears and writes the input data to the first sheet. If the file you specified does not exist, then the writing function creates a new file and writes the input data to the first sheet. When WriteVariableNames is set to true , the writing function does not support the write mode 'append'.

When the write mode is 'append' , the writing function does not support the Range parameter. If the file you specified does not exist, then the writing function performs the same actions as 'replacefile'. Example: 'WriteMode','append'. Field delimiter character, specified as the comma-separated pair consisting of 'Delimiter' and a character vector or string scalar containing one of these specifiers:. You can use the 'Delimiter' name-value pair only for delimited text files. Example: 'Delimiter','space'.

Indicator for writing quoted text, specified as 'QuoteStrings' and either true or false. If 'QuoteStrings' is true , then the function encloses text in double-quote characters and replaces any double-quote characters surrounding text with two double-quote characters. The two double-quote characters are also referred to as escaped characters. If 'QuoteStrings' is false , then text is written without alteration. If 'QuoteStrings' is unspecified, the function inspects the data for delimiters designated by the 'Delimiter' name-value argument.

If a delimiter is found within a column, each element within the column will be written with double-quotes. You can use the 'QuoteStrings' name-value argument only with delimited text files. Character encoding scheme associated with the file, specified as the comma-separated pair consisting of 'Encoding' and 'system' or a standard character encoding scheme name. Support Answers MathWorks. Search MathWorks. MathWorks Answers Support.

Close Mobile Search. Trial software. You are now following this question You will see updates in your followed content feed. You may receive emails, depending on your communication preferences. Write matrix to text file. Show older comments. Vote 0. The subtype operator immediately precedes the conversion character.

This table shows the conversions that can use subtypes. The text can be:. Special characters that you cannot enter as ordinary text. This table shows how to represent special characters in formatSpec.

Character whose Unicode numeric value can be represented by the octal number, N. Notable Behavior of Conversions with Formatting Operators. Data Types: single double int8 int16 int32 int64 uint8 uint16 uint32 uint64 logical char. Number of bytes that fprintf writes, returned as a scalar. When writing to a file, nbytes is determined by the character encoding. When printing data to the screen, nbytes is the number of characters displayed on the screen.

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.

If you specify an invalid formatting operator or special character, then fprintf prints all text up to the invalid operator or character and discards the rest. In formatSpec , hexadecimal numbers must be in the range [0 7F] and octal numbers must be in the range [0 ]. If fileID has a constant value of 1 or 2 and extrinsic calls are not possible, the code generator produces a C printf call.

Extrinsic calls are not possible when extrinsic calls are disabled or when fprintf is called inside a parfor loop. The fprintf call is inside a parfor loop. Using subtypes to print a floating-point number as its octal, decimal, or hexadecimal value.