Matlab Fprintf Format Scientific

In the official fprintf help page i observe that the way numbers are written in exponential notation differs depending on whether the computer on which matlab is running is a windows machine or not i e linux solaris or mac.

Matlab fprintf format scientific. If formatspec is a string then so is the output str. They are similar to those used by the printf function in the c programming language. Integer valued floating point numbers with a maximum of 9 digits do not display in scientific notation. Fprintf fstr variable list prints out the values of the variables in variable list according to the format described in the string fstr.

Note while this fprintf function is identical in name to its corresponding matlab function it provides only the functionality described on this page. These operators control notation alignment significant digits and so on. Fprintf my name is s n prof name. The value of fid is only set when output is sent to a le.

Typical uses for. Fprintf my age is d and my salary is 2f n prof age prof salary. For example matlab uses 3 digits to display int8 data types for instance 128 127. Count fprintf fid format a formats the data in the real part of matrix a and in any additional matrix arguments under control of the specified format string and writes it to the file associated with file identifier fid.

The format conventions follow the c language function fprintf. Str sprintf formatspec a1 an formats the data in arrays a1 an using the formatting operators specified by formatspec and returns the resulting text in str. Setting the output format to short or long does not affect the display of integer type variables. For example if you call fprintf d int64 n then the target hardware must have a native c type that supports a 64 bit integer.

When you call fprintf with an integer format specifier the type of the integer argument must be a type that the target hardware can represent as a native c type. The value of each variable is plugged into the appropriate format string at the appropriate location as marked by the sign in the string. Fprintf fid format variables where format is a text string that controls the appearance of the output variables is a comma separated list of variables to be displayed according to the speci cation in format and fid is a le identi er for the le to which the output is sent. The fprintf command displays formatted text centered on the icon and can display formatspec along with the contents of var.

To convert data to text and control its format you can use formatting operators with common conversion functions such as num2str and sprintf. The sprintf function formats the values in a1 an in column order. Otherwise str is a character vector.