3-1 ?本??維繪???

MATLAB plot OO̰򥻪øϫOAiH@ x yФά۹ y yжiyI@ϡAҦpG

Example 1: 03-Gø/plotxy01.mx = linspace(0, 2*pi); % b 0 2*pi A 100 I y = sin(x); % p x ƭ plot(x, y); % iGyI@

bWҤAlinspace(0, 2*pi) ͱq 0 2k B׬ 100 ]w]ȡ^Vq xAy hO y yЭȡAplot(x, y) hio 100 ӤGWIiyI@ϡC

pGuw@ӦVqA plot O|NVqޭȡ]Index^@ϡC]AY y @VqAh plot(y) M plot(1:length(y), y) |oۦPGC

YnQ plot O@eXhuAiN x y yШ̦eJ plot OYiAҦpG

Example 2: 03-Gø/plotxy02.mx = linspace(0, 2*pi); % b 0 2*pi A 100 I plot(x, sin(x), x, cos(x), x, sin(x)+cos(x)); % ihuyI@

MATLAB beXhuɡA|۰ʽuCAHQC]iѨϥΪ̦ۦwuCΨLʽAԨU@`C^YnHPuС]Marker^ӧ@ϡAiJpUG

Example 3: 03-Gø/plotxy03.mx = linspace(0, 2*pi); % b 0 2k A 100 I plot(x, sin(x), 'o', x, cos(x), 'x', x, sin(x)+cos(x), '*');

pGuw@ӯx} yAplot Oix} y C@ӦVq]Column Vector^@ϡAҦpG

Example 4: 03-Gø/plotxy04.my = peaks; % ͤ@ 4949 x} plot(y); % x} y C@ӦVq@

䤤 peaks OiHͤ@ 4949 x}AN@ӤGƪȡC]pGzb MATLAB OJ peaksANiHݨoӨƪ{ΦC^] plot(y) NeXo 49 uAĪGq[ peaks ơC

pG x M y Ox}A plot(x, y) N| y C@ӦVqM x Vq@ϡAҦpG

Example 5: 03-Gø/plotxy05.mx = peaks; y = x'; % Dx} x mx} x' plot(x, y); % ίx} x C@VqAPx} y C@ӦVq@

Hint
@뱡pUAMATLAB Nx}VqXC]@ӥuBzVqơ]ҦpGmaxBmin mean^AYw@ӯx}AhƷ|x}Vq@@iBzιBC

pG z O@ӽƼƦVqίx}A plot(z) ON z 곡]Y real(z)^M곡]Y imag(z)^O x yЩM y yШӧ@ϡAĪGOۦP plot(real(z), imag(z))A|ҦpUG

Example 6: 03-Gø/plotxy06.mx = randn(30); % 3030 üơ]WG^x} z = eig(x); % p x uTȡv]κ١uSxȡv^ plot(z, 'o') grid on % eXu

bWҤAx O@ 3030 üƯx}Az hO x uTȡv]EigenvalueAκ١uSxȡv^Cѩ z O@ƼƦVqAӥBC@ӽƼƳM@mƼƦPɥX{A]ҵeXϬOWU٪C

MATLAB 򥻤GøϫOAizpUC

O
Plotx bM y buʨס]Linear Scale^
loglogx bM y bƨס]Logarithmic Scale^
semilogxx bƨסAy buʨ
semilogyx buʨסAy bƨ
plotyyeXӨפPyb

ҦpAYn x bƨסAӹ勵Ƨ@ϡAiipUG

Example 7: 03-Gø/plotxy07.mx = linspace(0, 8*pi); % b 0 8k A 100 I semilogx(x, sin(x)); % x bƨסAù䥿Ƨ@

~Aplotyy OiHeXӨפP y bApUG

Example 8: 03-Gø/plotxy08.mx = linspace(0, 2*pi); % b 0 2k A 100 I y1 = sin(x); y2 = exp(-x); plotyy(x, y1, x, y2); % eXӨפP y bAOO y1, y2

Ъ`NbWϤAy1 ׬ObAy2 ׬ObkAӥB䪺׬O@˪C


MATLAB{]pGJg