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<h1>3.1.3 圖形放大及縮小</h1>
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<p><font COLOR="#FF0000" FACE="Times New Roman">zoom</font><font FACE="Times New Roman"> </font>指令可以將圖形放大或縮小，若要將圖形放大時用
<font COLOR="#FF0000" FACE="Times New Roman">zoom on</font>，<font COLOR="#FF0000" FACE="Times New Roman">zoom out</font>，當(dāng)不再須要放大或縮小圖形時用 <font COLOR="#FF0000" FACE="Times New Roman">zoom off</font>。<tt> </tt></p>
<p><font COLOR="#FF0000" FACE="Times New Roman">>> M=peaks(25); % peaks </font><font COLOR="#FF0000">是</font><font COLOR="#FF0000" FACE="Times New Roman">MATLAB</font><font COLOR="#FF0000">內(nèi)建的一個像山峰的特別函數(shù)，</font><font COLOR="#FF0000" FACE="Times New Roman">25</font><font COLOR="#FF0000">是這個</font> </p>
<p><font COLOR="#FF0000" FACE="Times New Roman">>> plot(M) % </font><font COLOR="#FF0000">函數(shù)矩陣的大小，如果數(shù)值愈大則畫出的山峰圖愈平滑</font>
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<p><font COLOR="#FF0000" FACE="Times New Roman">>> zoom on % </font><font COLOR="#FF0000">開始放大圖形，每按一次</font><font COLOR="#FF0000" FACE="Times New Roman">Enter</font><font COLOR="#FF0000">鍵圖形就放大一次</font> </p>
<p><font COLOR="#FF0000" FACE="Times New Roman">>> zoom out % </font><font COLOR="#FF0000">開始縮小圖形，每按一次</font><font COLOR="#FF0000" FACE="Times New Roman">Enter</font><font COLOR="#FF0000">鍵圖形就縮小一次</font> </p>
<p><font COLOR="#FF0000" FACE="Times New Roman">>> zoom off % </font><font COLOR="#FF0000">停止圖形放大或縮小功能<br>
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