ããmatlabçdispå½æ°
ãã1.è¾åºå符串ï¼
ãã>>disp('my test')
ããmy test
ãã2.è¾åºæ°åï¼
ãã>> test=3;
ãã>> disp(test)
ãã3
ãã3.åæ¶è¾åºå符串åæ°åï¼
ãã>> test=3;
ãã>> disp(['my test=',num2str(test)])
ããmy test=3
ããMatlabå½æ°num2str
ããå¨matlabä¸ï¼æ 论æ¯å
建å½æ°è¿æ¯å·¥å
·ç®±å½æ°ï¼ 2å¾å¸¸è§ï¼ è¿å¯è½æ¯å 为2è±ætwoåtoåé³ç¸åãè2åèµ·æ¥ä¹æ¯è¾ç®åã æ以å¾å¤è½¬æ¢ç±»å½æ°é½ç¨2æ¥å½åèétoãæ¯å¦number to stringï¼ ä¸æ¯å½å为numTostrènum2strã
ããå½æ°åè½ï¼ ææ°å¼è½¬æ¢æåç¬¦ä¸²ï¼ è½¬æ¢åå¯ä»¥ä½¿ç¨fprintfædispå½æ°è¿è¡è¾åºãå¨matlabå½ä»¤çªå£ä¸é®å
¥doc num2stræhelp num2strå³å¯è·å¾è¯¥å½æ°ç帮å©ä¿¡æ¯ã
ããè¯æ³æ ¼å¼ï¼
ããstr = num2str(A)
ããææ°ç»Aä¸çæ°è½¬æ¢æå符串表示形å¼ã
ããstr = num2str(A, precision)
ããææ°ç»A转æ¢æå符串形å¼è¡¨ç¤ºï¼precisionè¡¨ç¤ºç²¾åº¦ï¼ æ¯å¦precision为3表示ä¿çæå¤3ä½æææ°åï¼ ä¾å¦ ï¼
ãã0.5345转æ¢å为0.534,1.2345转æ¢å为1.23ãå³ä»å·¦è¾¹ç¬¬ä¸ä¸ªä¸ä¸º0çæ°å¼å§ä¿ç3个æ°å¼ã
ããstr = num2str(A, format)
ããæformatæå®æ ¼å¼è¿è¡æ ¼å¼å转æ¢ï¼é常'%11.4g'æ¯é»è®¤çã
ããç¸å
³å½æ°ï¼ mat2str, int2str, str2num, sprintf, fprintf
ããåºç¨ä¸¾ä¾ ï¼
ãã>> A = [1, 2, 3];
ãã>> B = num2str(A);
ãã>> fprintf('%s', B)
ãã1 2 3>>
ãã>> C = [1.564, 0.12345];
ãã>> D = num2str(C, 3)
ããD =
ãã1.56 0.123
ãã>> D = int32(1)
ããD =
ãã1
ãã>> num2str(D, '%.6f')
ããans =
ãã1.000000
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