%-- 27.10.10 15:59 --%
A=generuj_matici_det(5,0,7)
A=generuj_matici_det(8,0,7)
det(A)
A=generuj_matici_det(10,10,7)
clc
B=orto_baze([1 -3 5;2 1 -1; 0 1 1],1)
dot(B(:,1),B(:,2))
dot(B(:,1),B(:,3))
dot(B(:,2),B(:,3))
norm(B(:,1))
B=orto_baze([1 -4;4 1;-1 0;3 0])
dot(B(:,1),B(:,2))
norm(B(:,1))
norm(B(:,2))
B=orto_baze([2 1 -2;1 1 -1;0 3 1;1 1 3],0)
dot(B(:,1),B(:,2))
dot(B(:,1),B(:,3))
clear
clc
B=orto_baze([1 -4;4 1;-1 0;3 0])
dot(B(:,1),B(:,2))
clc
grafy_polynomu(-1:.01:3,[1 -1 2],[1 -2 1 0])
doc surface
clc
[X,Y] = meshgrid([-2:1/4:2]);
Z = X.*exp(-X.^2-Y.^2);
contour3(X,Y,Z,30)
surface(X,Y,Z,... % síť
'EdgeColor',[.8 .8 .8],... % šedá
'FaceColor','none')
[X,Y] = meshgrid(-3:.125:3);
meshc
Z = peaks(X,Y);
meshc(X,Y,Z);
axis([-3 3 -3 3 -10 5])
doc colormap
[X,Y] = meshgrid(-3:.125:3);
Z = peaks(X,Y);
meshc(X,Y,Z);
axis([-3 3 -3 3 -10 5])
clc
ezsurf('sin(sqrt(x^2+y^2))/sqrt(x^2+y^2)',[-6*pi,6*pi]) % 3D graf
view(0,75) % nastavení pohledu
shading interp % režim stínování ("plynulý")
lightangle(-45,30) % nastavení sférické polohy světla
lighting phong % Phongův osvětlovací model
set(gcf,'Renderer','zbuffer') % metoda vyobrazení (zde: rychlejší vykreslení)
set(findobj(gca,'type','surface'), 'FaceLighting','phong',...
'AmbientStrength',.3,'DiffuseStrength',.8, 'SpecularStrength',.9,...
'SpecularExponent',25, 'BackFaceLighting','unlit') % "zářivější" graf
%mexický klobouk (sombrero)
rmax=3;
r=0:rmax/20:rmax;
phi = -pi:pi/10:pi;
[R,PHI]=meshgrid(r,phi);
H=(1-R.^2).*exp(-R.*R);
X = R.*cos(PHI);
Y = R.*sin(PHI);
P = sqrt(R.^2 +H.^2);
surfc(X,Y,H,P)
% kresleni koule
k = 5;
n = 2^k-1;
[x,y,z] = sphere(n); % generuje data pro kouli
c = hadamard(2^k); % textura
surf(x,y,z,c); % vykresleni koule s texturou
colormap([1 1 0; 0.6 0 0]) % zluta a cervena
axis equal
load clown
clear
clc
load clown
image(X)
imagesc(X)
imageext
colormap('default')
colormap(gray)
imagesc(X)
load durer
image(X)
colormap(map)
title(caption)
axis image
vyrez = X(90:170, 394:480);
figure, image(vyrez), colormap(map), axis image
load detail
figure, image(X), colormap(map), title(caption), axis image
help images
doc images
close
clear
clc
bod_na_spirale(.3,.1,4,21)
clear
bod_na_spirale(.3,.1,4,21)
bod_na_spirale(.3,.1,4,160)
clc
bod_na_spirale(.3,.5,4,5)
close all
katenoid
katenoid(3)
membrane
clc
imagesc(sierp_koberec(5))
imagesc(sierp_koberec(10))
imagesc(sierp_koberec(8))
image(sierp_koberec(8))