matlab字符串转换及数值格式转换（Matlab string conversion and numeric format conversion）.docVIP

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matlab字符串转换及数值格式转换（Matlab string conversion and numeric format conversion）.doc

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matlab字符串转换及数值格式转换（Matlab string conversion and numeric format conversion）

matlab字符串转换及数值格式转换（Matlab string conversion and numeric format conversion） Matlab string conversion and numerical format conversion String conversion function The ABS string to ASCII conversion DEC2HEX decimal to sixteen hexadecimal string conversion The fprintf formatted text written to a file or display HEX2DEC sixteen hexadecimal string into a decimal number Hex2num sixteen hexadecimal string into IEEE float Int2str integer into a string The lower string is converted to lowercase The num2str number is converted to a string Setstr string ASCII Sprintf format for digital control, converted into a string Sscanf format control string is converted to digital. The str2mat string is converted into a text matrix The str2num string is converted to digital The upper string to uppercase In many cases, hope a number is embedded into a string. Can accomplish this task several string conversion. Rad=2.5; area=pi*rad^2?; T=[A circle of? Radius (RAD) has num2str an area of num2str (area) ]; Disp (T)? A circle of radius has an area of 19.63. 2.5 Here the function num2str is used to put the value into a string, the string is used to connect the converted number embedded into a string in the sentence. In a similar manner, the integer is converted to a string of int2str. Whether it is num2str or int2str calls the function sprintf, it is converted to a string of numerical with similar C language grammar. Both the fprintf and sprintf input parameters in the same way, but the output is sent to the fprintf display screen or file, and the sprintf output back to a string. For example, the above example can be rewritten as num2str T=sprintf (A circle? Of radius%.4g has an area of%.4g., rad, area); Disp (T)? A circle of radius has an area of 19.63. 2.5 Fprintf (A circle? Of radius%.4g has an area of%.4g.\n, rad, area) A circle of radius has an area of 19.63. 2.5 Here%.4g is used in the num2str function in the data format. %.4g is to use index or point mark, whichever is shorter. The only sh