📄 2_1_2.htm
字号:
<html>
<head>
<title>绘图入门</title>
</head>
<body lang=ZH-CN link=blue vlink=purple style='tab-interval:21.0pt;text-justify-trim:
punctuation'>
<div class=Section1 style='layout-grid:15.6pt'>
<p class=MsoNormal align=center style='text-align:center'><b><span
style='font-size:26.0pt;mso-bidi-font-size:12.0pt;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";color:blue'>绘图入门</span></b><b><span
lang=EN-US style='font-size:26.0pt;mso-bidi-font-size:12.0pt;color:blue'><o:p></o:p></span></b></p>
<div class=MsoNormal align=center style='text-align:center'><span lang=EN-US>
<hr size=2 width="100%" align=center>
</span></div>
<p class=MsoNormal style='margin-left:21.0pt;text-indent:-21.0pt;mso-list:l0 level1 lfo2;
tab-stops:list 21.0pt'><![if !supportLists]><span lang=EN-US style='font-family:
Wingdings'>l<span style='font:7.0pt "Times New Roman"'>
</span></span><![endif]><span lang=EN-US>plot</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>的基本调用格式</span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?t=0:0.001:10;<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?y=sin(t);<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?plot(t,y);</span></p>
<p class=MsoNormal><span lang=EN-US> <img width=554 height=415
src="./2_1_2/image002.jpg" v:shapes="_x0000_i1026"> </span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?Y=sin(10*t);<br
clear=all style='page-break-before:always'>
?c=y.*Y;<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?plot(t,y,'r:',t,Y,'b')</span></p>
<p class=MsoNormal><span lang=EN-US> <img width=554 height=415
src="./2_1_2/image004.jpg" v:shapes="_x0000_i1027"> </span></p>
<p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>比较一下前后的差别。</span></p>
<p class=MsoNormal style='margin-left:21.0pt;text-indent:-21.0pt;mso-list:l0 level1 lfo2;
tab-stops:list 21.0pt'> <span lang=EN-US style='font-family:
Wingdings;color:blue'>l<span style='font:7.0pt "Times New Roman"'>
</span></span><span style='font-family:宋体'>对於变化剧烈的函数，可用<span
lang=EN-US>fplot来进行较精确的绘图,</span></span><span lang=EN-US>fplot</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>的基本调用格式</span><span lang=EN-US>:<span style='color:blue'><o:p></o:p></span></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?<span
style="mso-spacerun: yes">
</span>subplot(2,2,1), fplot('humps',[0 1])%subplot</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";color:blue'>的用法在下一页做详细的介绍</span><span lang=EN-US
style='color:blue'><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'><span
style="mso-spacerun: yes"> </span>subplot(2,2,2),
fplot('abs(exp(-j*x*(0:9))*ones(10,1))',[0 2*pi])<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'><span
style="mso-spacerun: yes">
</span>subplot(2,2,3), fplot('[tan(x),sin(x),cos(x)]',2*pi*[-1 1 -1 1])<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'><span
style="mso-spacerun: yes">
</span>subplot(2,2,4), fplot('sin(1 ./ x)', [0.01 0.1],1e-3)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'> <img width=554 height=415
src="./2_1_2/image006.jpg" v:shapes="_x0000_i1028"> <o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:21.0pt;text-indent:-21.0pt;mso-list:l0 level1 lfo2;
tab-stops:list 21.0pt'><span lang=EN-US style='font-family:
Wingdings;color:blue'>l<span style='font:7.0pt "Times New Roman"'>
</span></span> <span lang=EN-US>ezplot</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>的基本调用格式</span><span
lang=EN-US style='color:blue'><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?subplot(3,3,1)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?ezplot('cos(x)')<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?subplot(3,3,2)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?ezplot('cos(x)', [0,
pi])<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?subplot(3,3,3)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?ezplot('1/y-log(y)+log(-1+y)+x
- 1')<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?subplot(3,3,4)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?ezplot('x^2 - y^2 - 1')<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?subplot(3,3,5)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?ezplot('x^2 + y^2 -
1',[-1.25,1.25]); axis equal<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?subplot(3,3,6)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?ezplot('x^3 + y^3 -
5*x*y + 1/5',[-3,3])<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?subplot(3,3,7)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>? ezplot('x^3 + 2*x^2 -
3*x + 5 - y^2')<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?subplot(3,3,8)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?ezplot('sin(t)','cos(t)')<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?subplot(3,3,9)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'>?
ezplot('sin(3*t)*cos(t)','sin(3*t)*sin(t)',[0,pi])<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:blue'> <img width=554 height=415
src="./2_1_2/image008.jpg" v:shapes="_x0000_i1029"> <o:p></o:p></span></p>
<div class=MsoNormal align=center style='text-align:center'><span lang=EN-US>
<hr size=2 width="100%" align=center>
</span></div>
<p class=MsoNormal align=center style='text-align:center'><span lang=EN-US
style='color:red'><a href="http://passmatlab.myetang.com"><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>回主页</span></a><span
style="mso-spacerun: yes"> </span><a href="..\MATLAB_2.htm"><span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>返回</span></a><span
style="mso-spacerun: yes"> </span></span><span
lang=EN-US style='color:blue'><a href="2_1_1.htm"><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>上一页</span></a>
</span><span lang=EN-US style='color:red'><span style="mso-spacerun:
yes"> </span><a href="2_1_3.htm"><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>下一页</span></a></span><b><span
lang=EN-US style='font-size:26.0pt;mso-bidi-font-size:12.0pt;color:blue'><o:p></o:p></span></b></p>
</div>
</body>
</html>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -