(3) 瀵瑰彧鍖呭惈涓€涓緭鍏ュ弬鏁扮殑plot鍑芥暟锛屽綋杈撳叆鍙傛暟鏄疄鐭╅樀鏃讹紝鍒欐寜鍒楃粯鍒舵瘡鍒楀厓绱犲€肩浉瀵瑰叾涓嬫爣鐨勬洸绾匡紝鏇茬嚎鏉℃暟绛変簬杈撳叆鍙傛暟鐭╅樀鐨勫垪鏁般€?br />褰撹緭鍏ュ弬鏁版槸澶嶆暟鐭╅樀鏃讹紝鍒欐寜鍒楀垎鍒互鍏冪礌瀹為儴鍜岃櫄閮ㄤ负妯€佺旱鍧愭爣缁樺埗澶氭潯鏇茬嚎銆?/div>
2锛庡惈澶氫釜杈撳叆鍙傛暟鐨刾lot鍑芥暟
璋冪敤鏍煎紡涓猴細
plot(x1,y1,x2,y2,…,xn,yn)
(1) 褰撹緭鍏ュ弬鏁伴兘涓哄悜閲忔椂锛寈1鍜寉1锛寈2鍜寉2锛?hellip;锛寈n鍜寉n鍒嗗埆缁勬垚涓€缁勫悜閲忓锛屾瘡涓€缁勫悜閲忓鐨勯暱搴﹀彲浠ヤ笉鍚屻€傛瘡涓€鍚戦噺瀵瑰彲浠ョ粯鍒跺嚭涓€鏉℃洸绾匡紝杩欐牱鍙互鍦ㄥ悓涓€鍧愭爣鍐呯粯鍒跺嚭澶氭潯鏇茬嚎銆?br />(2) 褰撹緭鍏ュ弬鏁版湁鐭╅樀褰㈠紡鏃讹紝閰嶅鐨剎,y鎸夊搴斿垪鍏冪礌涓烘í銆佺旱鍧愭爣鍒嗗埆缁樺埗鏇茬嚎锛屾洸绾挎潯鏁扮瓑浜庣煩闃电殑鍒楁暟銆?/div>
渚嬪锛?/font>鍒嗘瀽涓嬪垪绋嬪簭缁樺埗鐨勬洸绾裤€?br />x1=linspace(0,2*pi,100);
x2=linspace(0,3*pi,100);
x3=linspace(0,4*pi,100);
y1=sin(x1);
y2=1+sin(x2);
y3=2+sin(x3);
x=[x1;x2;x3]';
y=[y1;y2;y3]';
plot(x,y,x1,y1-1)
3锛庡叿鏈変袱涓旱鍧愭爣鏍囧害鐨勫浘褰?br />鍦∕ATLAB涓紝濡傛灉闇€瑕佺粯鍒跺嚭鍏锋湁涓嶅悓绾靛潗鏍囨爣搴︾殑涓や釜鍥惧舰锛屽彲浠ヤ娇鐢╬lotyy缁樺浘鍑芥暟銆傝皟鐢ㄦ牸寮忎负锛?br />plotyy(x1,y1,x2,y2)
鍏朵腑x1锛寉1瀵瑰簲涓€鏉℃洸绾匡紝x2锛寉2瀵瑰簲鍙︿竴鏉℃洸绾裤€傛í鍧愭爣鐨勬爣搴︾浉鍚岋紝绾靛潗鏍囨湁涓や釜锛屽乏绾靛潗鏍囩敤浜巟1锛寉1鏁版嵁瀵癸紝鍙崇旱鍧愭爣鐢ㄤ簬x2锛寉2鏁版嵁瀵广€?br />
渚嬪锛?/font>鐢ㄤ笉鍚屾爣搴﹀湪鍚屼竴鍧愭爣鍐呯粯鍒舵洸绾縴1=0.2e-0.5xcos(4πx) 鍜寉2=2e-0.5xcos(πx)銆?br />绋嬪簭濡備笅锛?br />x=0:pi/100:2*pi;
y1=0.2*exp(-0.5*x).*cos(4*pi*x);
y2=2*exp(-0.5*x).*cos(pi*x);
plotyy(x,y1,x,y2);
渚嬪锛?/font>閲囩敤鍥惧舰淇濇寔锛屽湪鍚屼竴鍧愭爣鍐呯粯鍒舵洸绾?/font>
y1=0.2e-0.5xcos(4πx) 鍜寉2=2e-0.5xcos(πx)銆?br />绋嬪簭濡備笅锛?/font>
x=0:pi/100:2*pi;
y1=0.2*exp(-0.5*x).*cos(4*pi*x);
plot(x,y1)
hold on
y2=2*exp(-0.5*x).*cos(pi*x);
plot(x,y2);
hold off
璁剧疆鏇茬嚎鏍峰紡
MATLAB鎻愪緵浜嗕竴浜涚粯鍥鹃€夐」锛岀敤浜庣‘瀹氭墍缁樻洸绾跨殑绾垮瀷銆侀鑹插拰鏁版嵁鐐规爣璁扮鍙凤紝瀹冧滑鍙互缁勫悎浣跨敤銆備緥濡傦紝“b-.”琛ㄧず钃濊壊鐐瑰垝绾匡紝“y:d”琛ㄧず榛勮壊铏氱嚎骞剁敤鑿卞舰绗︽爣璁版暟鎹偣銆傚綋閫夐」鐪佺暐鏃讹紝MATLAB瑙勫畾锛岀嚎鍨嬩竴寰嬬敤瀹炵嚎锛岄鑹插皢鏍规嵁鏇茬嚎鐨勫厛鍚庨『搴忎緷娆°€?br />瑕佽缃洸绾挎牱寮忓彲浠ュ湪plot鍑芥暟涓姞缁樺浘閫夐」锛屽叾璋冪敤鏍煎紡涓猴細
plot(x1,y1,閫夐」1,x2,y2,閫夐」2,…,xn,yn,閫夐」n)
渚嬪锛?/font>鍦ㄥ悓涓€鍧愭爣鍐咃紝鍒嗗埆鐢ㄤ笉鍚岀嚎鍨嬪拰棰滆壊缁樺埗鏇茬嚎y1=0.2e-0.5xcos(4πx) 鍜寉2=2e-0.5xcos(πx)锛屾爣璁颁袱鏇茬嚎浜ゅ弶鐐广€?br />绋嬪簭濡備笅锛?br />x=linspace(0,2*pi,1000);
y1=0.2*exp(-0.5*x).*cos(4*pi*x);
y2=2*exp(-0.5*x).*cos(pi*x);
k=find(abs(y1-y2)<1e-2); %鏌ユ壘y1涓巠2鐩哥瓑鐐?杩戜技鐩哥瓑)鐨勪笅鏍?br />x1=x(k); %鍙杫1涓巠2鐩哥瓑鐐圭殑x鍧愭爣
y3=0.2*exp(-0.5*x1).*cos(4*pi*x1); %姹倅1涓巠2鍊肩浉绛夌偣鐨剏鍧愭爣
plot(x,y1,x,y2,'k:',x1,y3,'bp');
鍥惧舰鏍囨敞涓庡潗鏍囨帶鍒?/font>
1锛庡浘褰㈡爣娉?br />鏈夊叧鍥惧舰鏍囨敞鍑芥暟鐨勮皟鐢ㄦ牸寮忎负锛?br />title(鍥惧舰鍚嶇О)
xlabel(x杞磋鏄?
ylabel(y杞磋鏄?
text(x,y,鍥惧舰璇存槑)
legend(鍥句緥1,鍥句緥2,…)
鍑芥暟涓殑璇存槑鏂囧瓧锛岄櫎浣跨敤鏍囧噯鐨凙SCII瀛楃澶栵紝杩樺彲浣跨敤LaTeX鏍煎紡鐨勬帶鍒跺瓧绗︼紝杩欐牱灏卞彲浠ュ湪鍥惧舰涓婃坊鍔犲笇鑵婂瓧姣嶃€佹暟瀛︾鍙峰強鍏紡绛夊唴瀹广€備緥濡傦紝text(0.3,0.5,‘sin({\omega}t+{\beta})’)灏嗗緱鍒版爣娉ㄦ晥鏋渟in(ωt+β)銆?br />渚嬪锛?/font>鍦?≤x≤2?鍖洪棿鍐咃紝缁樺埗鏇茬嚎y1=2e-0.5x鍜寉2=cos(4πx)锛屽苟缁欏浘褰㈡坊鍔犲浘褰㈡爣娉ㄣ€?br />绋嬪簭濡備笅锛?br />x=0:pi/100:2*pi;
y1=2*exp(-0.5*x);
y2=cos(4*pi*x);
plot(x,y1,x,y2)
title('x from 0 to 2{\pi}'); %鍔犲浘褰㈡爣棰?br />xlabel('Variable X'); %鍔燲杞磋鏄?br />ylabel('Variable Y'); %鍔燳杞磋鏄?br />text(0.8,1.5,'鏇茬嚎y1=2e^{-0.5x}'); %鍦ㄦ寚瀹氫綅缃坊鍔犲浘褰㈣鏄?br />text(2.5,1.1,'鏇茬嚎y2=cos(4{\pi}x)');
legend(‘y1’,’y2’) %鍔犲浘渚?br />
2锛庡潗鏍囨帶鍒?/font>
axis鍑芥暟鐨勮皟鐢ㄦ牸寮忎负锛?br />axis([xmin xmax ymin ymax zmin zmax])
axis鍑芥暟鍔熻兘涓板瘜锛屽父鐢ㄧ殑鏍煎紡杩樻湁锛?br />axis equal锛氱旱銆佹í鍧愭爣杞撮噰鐢ㄧ瓑闀垮埢搴︺€?br />axis square锛氫骇鐢熸鏂瑰舰鍧愭爣绯?缂虹渷涓虹煩褰?銆?br />axis auto锛氫娇鐢ㄧ己鐪佽缃€?br />axis off锛氬彇娑堝潗鏍囪酱銆?br />axis on锛氭樉绀哄潗鏍囪酱銆?br />渚嬪锛?/font>缁欏潗鏍囧姞缃戞牸绾跨敤grid鍛戒护鏉ユ帶鍒躲€俫rid on/off鍛戒护鎺у埗鏄敾杩樻槸涓嶇敾缃戞牸绾匡紝涓嶅甫鍙傛暟鐨刧rid鍛戒护鍦ㄤ袱绉嶇姸鎬佷箣闂磋繘琛屽垏鎹€?br />缁欏潗鏍囧姞杈规鐢╞ox鍛戒护鏉ユ帶鍒躲€俠ox on/off鍛戒护鎺у埗鏄姞杩樻槸涓嶅姞杈规绾匡紝涓嶅甫鍙傛暟鐨刡ox鍛戒护鍦ㄤ袱绉嶇姸鎬佷箣闂磋繘琛屽垏鎹?/font>
鍦ㄥ悓涓€鍧愭爣涓紝鍙互缁樺埗3涓悓蹇冨渾锛屽苟鍔犲潗鏍囨帶鍒躲€?br />绋嬪簭濡備笅锛?br />t=0:0.01:2*pi;
x=exp(i*t);
y=[x;2*x;3*x]';
plot(y)
grid on; %鍔犵綉鏍肩嚎
box on; %鍔犲潗鏍囪竟妗?br />axis equal %鍧愭爣杞撮噰鐢ㄧ瓑鍒诲害
鍥惧舰绐楀彛鐨勫垎鍓?/font>
subplot鍑芥暟鐨勮皟鐢ㄦ牸寮忎负锛?br />subplot(m,n,p)
璇ュ嚱鏁板皢褰撳墠鍥惧舰绐楀彛鍒嗘垚m×n涓粯鍥惧尯锛屽嵆姣忚n涓紝鍏眒琛岋紝鍖哄彿鎸夎浼樺厛缂栧彿锛屼笖閫夊畾绗琾涓尯涓哄綋鍓嶆椿鍔ㄥ尯銆傚湪姣忎竴涓粯鍥惧尯鍏佽浠ヤ笉鍚岀殑鍧愭爣绯诲崟鐙粯鍒跺浘褰€?/font>
渚嬪锛?/font>鍦ㄤ竴涓浘褰㈢獥鍙ｄ腑浠ュ瓙鍥惧舰寮忓悓鏃剁粯鍒舵寮︺€佷綑寮︺€佹鍒囥€佷綑鍒囨洸绾裤€?br /> 绋嬪簭濡備笅锛?br /> x=linspace(0,2*pi,60);
y=sin(x);z=cos(x);
t=sin(x)./(cos(x)+eps); ct=cos(x)./(sin(x)+eps);
subplot(2,2,1);
plot(x,y);title('sin(x)');axis ([0,2*pi,-1,1]);
subplot(2,2,2);
plot(x,z);title('cos(x)');axis ([0,2*pi,-1,1]);
subplot(2,2,3);
plot(x,t);title('tangent(x)');axis ([0,2*pi,-40,40]);
subplot(2,2,4);
plot(x,ct);title('cotangent(x)');axis ([0,2*pi,-40,40]);
鍏朵粬浜岀淮鍥惧舰
鍏朵粬鍧愭爣绯讳笅鐨勪簩缁存暟鎹洸绾垮浘
1锛庡鏁板潗鏍囧浘褰?br />MATLAB鎻愪緵浜嗙粯鍒跺鏁板拰鍗婂鏁板潗鏍囨洸绾跨殑鍑芥暟锛岃皟鐢ㄦ牸寮忎负锛?br />semilogx(x1,y1,閫夐」1,x2,y2,閫夐」2,…)
semilogy(x1,y1,閫夐」1,x2,y2,閫夐」2,…)
loglog(x1,y1,閫夐」1,x2,y2,閫夐」2,…)
渚?/font> 缁樺埗y=10x2鐨勫鏁板潗鏍囧浘骞朵笌鐩磋绾挎€у潗鏍囧浘杩涜姣旇緝銆?br /> 绋嬪簭濡備笅锛?br /> x=0:0.1:10;
y=10*x.*x;
subplot(2,2,1);plot(x,y);title('plot(x,y)');grid on;
subplot(2,2,2);semilogx(x,y);title('semilogx(x,y)');grid on;
subplot(2,2,3);semilogy(x,y);title('semilogy(x,y)');grid on;
subplot(2,2,4);loglog(x,y);title('loglog(x,y)');grid on;
2锛庢瀬鍧愭爣鍥?br />polar鍑芥暟鐢ㄦ潵缁樺埗鏋佸潗鏍囧浘锛屽叾璋冪敤鏍煎紡涓猴細
polar(theta,rho,閫夐」)
鍏朵腑theta涓烘瀬鍧愭爣鏋佽锛宺ho涓烘瀬鍧愭爣鐭㈠緞锛岄€夐」鐨勫唴瀹逛笌plot鍑芥暟鐩镐技銆?br />渚?-11 缁樺埗r=sin(t)cos(t)鐨勬瀬鍧愭爣鍥撅紝骞舵爣璁版暟鎹偣銆?br />绋嬪簭濡備笅锛?/font>
t=0:pi/50:2*pi;
r=sin(t).*cos(t);
polar(t,r,'-*');
浜岀淮缁熻鍒嗘瀽鍥?/font>
鍦∕ATLAB涓紝浜岀淮缁熻鍒嗘瀽鍥惧舰寰堝锛屽父瑙佺殑鏈夋潯褰㈠浘銆侀樁姊浘銆佹潌鍥惧拰濉厖鍥剧瓑锛屾墍閲囩敤鐨勫嚱鏁板垎鍒槸锛?br />bar(x,y,閫夐」)锛氱敾鏉″舰鍥?br />stairs(x,y,閫夐」)锛?鐢婚樁姊浘
stem(x,y,閫夐」)锛氱敾绂绘暎搴忓垪鏁版嵁鍥?br />渚?/font> 鍒嗗埆浠ユ潯褰㈠浘銆侀樁姊浘銆佹潌鍥惧拰濉厖鍥惧舰寮忕粯鍒舵洸绾縴=2sin(x)銆?br />绋嬪簭濡備笅锛?br />x=0:pi/10:2*pi;
y=2*sin(x);
subplot(2,2,1);bar(x,y,'g');
title('bar(x,y,''g'')');axis([0,7,-2,2]);
subplot(2,2,2);stairs(x,y,'b');
title('stairs(x,y,''b'')');axis([0,7,-2,2]);
subplot(2,2,3);stem(x,y,'k');
title('stem(x,y,''k'')');axis([0,7,-2,2]);
subplot(2,2,4);fill(x,y,'y');
title('fill(x,y,''y'')');axis([0,7,-2,2]);
ll(x1,y1,閫夐」1,x2,y2,閫夐」2,…)锛氬～鍏呭浘褰?/font>
MATLAB鎻愪緵鐨勭粺璁″垎鏋愮粯鍥惧嚱鏁拌繕鏈夊緢澶氾紝渚嬪锛岀敤鏉ヨ〃绀哄悇鍏冪礌鍗犳€诲拰鐨勭櫨鍒嗘瘮鐨勯ゼ鍥俱€佸鏁扮殑鐩搁噺鍥剧瓑绛夈€?br />渚?/font> 缁樺埗鍥惧舰锛?br />(1) 鏌愪紒涓氬叏骞村悇瀛ｅ害鐨勪骇鍊?鍗曚綅锛氫竾鍏?鍒嗗埆涓猴細2347,1827,2043,3025锛岃瘯鐢ㄩゼ鍥句綔缁熻鍒嗘瀽銆?br />(2) 缁樺埗澶嶆暟鐨勭浉閲忓浘锛?+2.9i銆?-3i鍜?1.5-6i銆?br />绋嬪簭濡備笅锛?br />subplot(1,2,1);
pie([2347,1827,2043,3025]);
title('楗煎浘');
legend('涓€瀛ｅ害','浜屽搴?,'涓夊搴?,'鍥涘搴?);
subplot(1,2,2);
compass([7+2.9i,2-3i,-1.5-6i]);
