y | . | ||
m | o | ||
c | x | ||
r | + | ||
g | * | ||
b | s | ||
w | d | ||
k | v | ||
^ | |||
- | < | ||
: | > | ||
-. | - | p | |
-- | h |
, . , , . - :
:
>> x1=[-4*pi:pi/10:-pi];
>> y1=sin(x1);
>> x2=[-pi:pi/30:0];
>> y2=3*(x2/pi+1).^2;
>> x3=[0:0.02:5];
>> y3=3*exp(-x3)
>> plot(x1,y1,x2,y2,x3,y3)
, . -, : x1, y1, x2, y2, x3 y3 x y y (x) y x:
>> x=[x1 x2 x3];
>> y=[y1 y2 y3];
>> plot(x,y)
, , , plot . : , , . t, x, y x (t), y (t) plot y x:
>> t=[0:pi/20:2*pi];
>> x=cos(t).^3;
>> y=sin(t).^3;
>> plot(x,y)
comet . comet(x,y) , . .
MatLab , :
- loglog ( );
- semilogx ( );
- semilogy ( ).
, plot. plotyy. plotyy () , .
MatLab . grid on, grid off. title, , :
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>> title(' ')
legend. , , legend, . , :
1 ;
0 , ;
1 ( );
2 ;
3 ;
4 .
xlabel ylabel , .
. plot . . , , : plot(x,'ko'). plot , , . .
. bar:
>> x=[0.7 2.1 2.5 1.9 0.8 1.3];
>> bar(x)
bar ( 0.8), , bar(x,1.2), . bar , , .
pie, bar. :
1. , , ;
2. , , , .
, pie([0.1 0.2 0.3]) pie([1 2 3]). , pie , . . , , x:
>> x=[0.3 2 1.4 0.5 0.9];
>> [m,k]=max(x);
>> v=zeros(size(x));
>> v(k)=1;
>> pie(x,v)
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, :
>> pie([2400 3450 1800 5100],{'','','',''})
bar pie :
- barh ;
- bar3, pie3 .
, . hist . hist , , , . . , hist(randn(1,5000)) , , n=hist(randn(1,5000)) n ( ). hist. , , , . , . histc, bar 'histc', :
>> x=randn(1,10000);
>> int=[-2:0.5:2];
>> n=histc(x,int);
>> bar(int,n,'histc')
MatLab , . . , , . , . . , . meshgrid, , x y. meshgrid , .
>> [X,Y]=meshgrid(-1:0.1:1,0:0.1:2);
X , meshgrid, Y , meshgrid. Z, z (x, y) . , z (x, y) :
>> Z=exp(-X).*sin(pi*Y);
z (x, y) , :
>> mesh(X,Y,Z)
, (. 4.2). , .
. 4.2.
colorbar , z (x, y). , colormap, colormap(gray) . :
- bone gray, ;
- colorcube ;
- cool ;
- copper ;
- hot : ----;
- hsv ( );
- jet : ----;
- spring ;
- summer ;
- winter ;
MatLab , :
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- surf ;
- meshc, surfc xy;
- contour ;
- contourf ;
- contour3 , ;
- surfl
, mesh, :
>> sufr(X,Y,Z)
>> contourf(X,Y,Z)
. : , , contour, contourf contour3. , :
>> contourf(X,Y,Z,10)
z (x, y), :
>> contour(X,Y,Z,[-0.51 -0.25 -0.01 0.89])
z (x, y) . contour , , . clabel:
>> [CMatr, h] = contour(X, Y, Z,[-0.51 -0.25 -0.01 0.89]);
>> clabel(CMatr, h)
, sufr surfc, . shading interp, surf surfc, . , shading flat, shading faceted .
, , . : (AZ) (EL). , y, xy (. . 4.3, ).
4.3
view. view ( ):
>> [AZ, EL]=view
AZ =
-37.5000
EL =
MatLab . ( ) view, : view(0,90) . , , xlabel ylabel, zlabel . view :
- view(3) ;
- view([x,y,z]) x, y z.
surfl, . , surfl shading interp , (gray, copper, bone, winter . .), , , . surfl, ( ), ( ), : surfl(X,Y,Z,[20 80]) surfl(X,Y,Z,[6 8 11]).
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. Figure No. 1, . , , . figure . , figure. : Figure No. 2,Figure No. 3 . .
, ( ) . . , , . , . hold on. hold off.
. subplot . , ( ). figure :
>> subplot(2,3,1)
. subplot , . , . subplot(2,3,2), , subplot(2,3,6) . , subplot(2,3,k), :
>> subplot(2,3,3)
>> bar([1.2 0.3 2.8 0.9])
>> subplot(2,3,6)
>> surf(X,Y,Z)
1. . :
- ;
- ;
- .
, , , , , .
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; ; .
2. ; ; .
; ; .
3. ; ; .
; ; .
4. ; ; .
; ; .
5. ; ; .
; ; .
6. ; ; .
; ; .
7. ; ; .
; ; .
8. ; ; .
; ; .
9. ; ; .
; ; .
10. ; ; .
; ; .
2. - , .
1. 2.
3. 4.
5. 6.
7. 8.
9. 10.
3. , plot comet.
1. ; . 2. ; .
3. ; . 4. ; .
5. ; . 6. ; .
7. ; . 8. ; .
9. ; . 10. ; .
4. :
- ;
- ;
- ( , );
- .
. .
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.