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on 13 Oct 2021
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[x,y,z]=sphere(20)
x = 21×21
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -0.1564 -0.1488 -0.1266 -0.0919 -0.0483 0.0000 0.0483 0.0919 0.1266 0.1488 0.1564 0.1488 0.1266 0.0919 0.0483 0.0000 -0.0483 -0.0919 -0.1266 -0.1488 -0.1564 -0.3090 -0.2939 -0.2500 -0.1816 -0.0955 0.0000 0.0955 0.1816 0.2500 0.2939 0.3090 0.2939 0.2500 0.1816 0.0955 0.0000 -0.0955 -0.1816 -0.2500 -0.2939 -0.3090 -0.4540 -0.4318 -0.3673 -0.2668 -0.1403 0.0000 0.1403 0.2668 0.3673 0.4318 0.4540 0.4318 0.3673 0.2668 0.1403 0.0000 -0.1403 -0.2668 -0.3673 -0.4318 -0.4540 -0.5878 -0.5590 -0.4755 -0.3455 -0.1816 0.0000 0.1816 0.3455 0.4755 0.5590 0.5878 0.5590 0.4755 0.3455 0.1816 0.0000 -0.1816 -0.3455 -0.4755 -0.5590 -0.5878 -0.7071 -0.6725 -0.5721 -0.4156 -0.2185 0.0000 0.2185 0.4156 0.5721 0.6725 0.7071 0.6725 0.5721 0.4156 0.2185 0.0000 -0.2185 -0.4156 -0.5721 -0.6725 -0.7071 -0.8090 -0.7694 -0.6545 -0.4755 -0.2500 0.0000 0.2500 0.4755 0.6545 0.7694 0.8090 0.7694 0.6545 0.4755 0.2500 0.0000 -0.2500 -0.4755 -0.6545 -0.7694 -0.8090 -0.8910 -0.8474 -0.7208 -0.5237 -0.2753 0.0000 0.2753 0.5237 0.7208 0.8474 0.8910 0.8474 0.7208 0.5237 0.2753 0.0000 -0.2753 -0.5237 -0.7208 -0.8474 -0.8910 -0.9511 -0.9045 -0.7694 -0.5590 -0.2939 0.0000 0.2939 0.5590 0.7694 0.9045 0.9511 0.9045 0.7694 0.5590 0.2939 0.0000 -0.2939 -0.5590 -0.7694 -0.9045 -0.9511 -0.9877 -0.9393 -0.7991 -0.5805 -0.3052 0.0000 0.3052 0.5805 0.7991 0.9393 0.9877 0.9393 0.7991 0.5805 0.3052 0.0000 -0.3052 -0.5805 -0.7991 -0.9393 -0.9877
y = 21×21
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -0.0483 -0.0919 -0.1266 -0.1488 -0.1564 -0.1488 -0.1266 -0.0919 -0.0483 0 0.0483 0.0919 0.1266 0.1488 0.1564 0.1488 0.1266 0.0919 0.0483 0 0 -0.0955 -0.1816 -0.2500 -0.2939 -0.3090 -0.2939 -0.2500 -0.1816 -0.0955 0 0.0955 0.1816 0.2500 0.2939 0.3090 0.2939 0.2500 0.1816 0.0955 0 0 -0.1403 -0.2668 -0.3673 -0.4318 -0.4540 -0.4318 -0.3673 -0.2668 -0.1403 0 0.1403 0.2668 0.3673 0.4318 0.4540 0.4318 0.3673 0.2668 0.1403 0 0 -0.1816 -0.3455 -0.4755 -0.5590 -0.5878 -0.5590 -0.4755 -0.3455 -0.1816 0 0.1816 0.3455 0.4755 0.5590 0.5878 0.5590 0.4755 0.3455 0.1816 0 0 -0.2185 -0.4156 -0.5721 -0.6725 -0.7071 -0.6725 -0.5721 -0.4156 -0.2185 0 0.2185 0.4156 0.5721 0.6725 0.7071 0.6725 0.5721 0.4156 0.2185 0 0 -0.2500 -0.4755 -0.6545 -0.7694 -0.8090 -0.7694 -0.6545 -0.4755 -0.2500 0 0.2500 0.4755 0.6545 0.7694 0.8090 0.7694 0.6545 0.4755 0.2500 0 0 -0.2753 -0.5237 -0.7208 -0.8474 -0.8910 -0.8474 -0.7208 -0.5237 -0.2753 0 0.2753 0.5237 0.7208 0.8474 0.8910 0.8474 0.7208 0.5237 0.2753 0 0 -0.2939 -0.5590 -0.7694 -0.9045 -0.9511 -0.9045 -0.7694 -0.5590 -0.2939 0 0.2939 0.5590 0.7694 0.9045 0.9511 0.9045 0.7694 0.5590 0.2939 0 0 -0.3052 -0.5805 -0.7991 -0.9393 -0.9877 -0.9393 -0.7991 -0.5805 -0.3052 0 0.3052 0.5805 0.7991 0.9393 0.9877 0.9393 0.7991 0.5805 0.3052 0
z = 21×21
-1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -1.0000 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9877 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.9511 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8910 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.8090 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.7071 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.5878 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.4540 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.3090 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564 -0.1564
s=surface(x+18,y,z)
s =
Surface with properties: EdgeColor: [0 0 0] LineStyle: '-' FaceColor: 'flat' FaceLighting: 'flat' FaceAlpha: 1 XData: [21×21 double] YData: [21×21 double] ZData: [21×21 double] CData: [21×21 double] Show all properties
s.FaceColor='r'
s =
Surface with properties: EdgeColor: [0 0 0] LineStyle: '-' FaceColor: [1 0 0] FaceLighting: 'flat' FaceAlpha: 1 XData: [21×21 double] YData: [21×21 double] ZData: [21×21 double] CData: [21×21 double] Show all properties
s.EdgeColor ='none'
s =
Surface with properties: EdgeColor: 'none' LineStyle: '-' FaceColor: [1 0 0] FaceLighting: 'flat' FaceAlpha: 1 XData: [21×21 double] YData: [21×21 double] ZData: [21×21 double] CData: [21×21 double] Show all properties
axis square off
hold on
x=-6:.04:16
x = 1×551
-6.0000 -5.9600 -5.9200 -5.8800 -5.8400 -5.8000 -5.7600 -5.7200 -5.6800 -5.6400 -5.6000 -5.5600 -5.5200 -5.4800 -5.4400 -5.4000 -5.3600 -5.3200 -5.2800 -5.2400 -5.2000 -5.1600 -5.1200 -5.0800 -5.0400 -5.0000 -4.9600 -4.9200 -4.8800 -4.8400
z=randn(551)
z = 551×551
0.3596 -0.1288 0.0772 1.4084 1.1926 -0.6009 1.1584 -1.2115 0.8430 0.6307 -0.5992 -0.2452 -1.4414 0.0986 0.4843 -0.4056 1.8381 2.0665 0.1601 0.3169 0.4473 0.1804 -0.2766 0.7226 -0.4324 -0.6761 -0.0938 1.0604 -0.5055 1.4223 0.9032 -0.9934 -0.7713 0.7494 0.2180 -0.9708 -0.4388 1.9333 -1.0394 -0.5940 1.1698 0.5878 0.7752 0.5778 -0.6447 0.1711 -0.7266 1.1069 0.5776 0.5144 0.2439 -0.1906 0.2887 0.3118 -0.5025 0.1140 -0.1449 -0.7975 -0.9693 0.7882 -0.7605 -0.2983 -1.1432 -0.2248 0.6400 0.9110 -0.0068 -1.2089 -1.4382 2.1389 1.3428 0.6437 0.7453 0.1174 -0.1930 -0.4521 -0.4783 0.0640 0.2534 0.5446 -0.4385 -0.2082 0.4879 -0.0869 -0.0154 0.0068 0.6482 -2.1420 -0.7453 0.1189 -2.7148 0.2275 0.3013 -0.8316 0.5017 -0.3435 -1.8532 -0.5949 0.5570 -0.1257 0.6312 -0.7301 -1.0443 1.9249 -0.3050 0.6488 2.3862 -1.1022 0.4486 0.9504 0.4697 -1.2353 0.0402 -1.7389 -0.2285 0.3292 0.4795 -1.1790 1.4199 -1.0703 -0.4306 2.1784 -0.9288 1.4138 1.2041 0.0965 -0.4368 -0.1575 -0.9770 0.9425 0.2087 1.7843 -0.1599 -0.4886 1.4373 -0.3607 2.1075 2.6318 -1.2312 -2.0040 -0.4934 3.0303 0.6773 -0.6165 0.8494 -0.0249 0.6431 -0.0934 -0.8330 0.5387 2.2615 -0.1027 -0.4045 -0.5283 -0.5355 0.9006 -1.5449 -0.0405 -1.0995 1.1185 2.5613 0.8545 1.3115 -0.4464 -1.1819 1.0496 -0.2148 0.4770 0.3043 -0.0513 -0.0937 1.0686 0.5849 0.4624 0.4132 0.8215 0.6677 -1.9548 -2.1795 -1.1728 0.1883 -0.5176 -1.4916 1.3106 -0.0806 1.1569 -2.7927 -0.4823 -0.7439 0.0376 -0.8591 0.1191 1.1487 0.8556 -0.6127 1.9787 -0.6150 1.8358 -2.0515 -0.1206 0.0515 -0.0960 0.3874 -0.6363 0.9670 -1.0426 0.3736 1.7588 0.9420 0.1789 0.5617 -0.4916 0.3651 -0.7963 0.4214 0.1512 -0.1796 -0.1722 -0.0062 -0.2203 0.0027 2.0237 -1.2424 1.3371 0.3015 -0.0221 -0.2256 -0.1368 1.6895 -0.9078 -0.0754 -0.5059 0.7038 0.0955 -0.0894 0.3703 -0.9509 -0.1888 0.5026 -0.8318 1.2884 1.5001 0.9518 0.4820 1.6365 -0.4756 0.9072 0.3789 0.0980 -0.2420 -0.0209 -0.9856 1.5234 -0.2422 -0.0954 -0.3731 -0.3746 -0.1057 -0.5579 0.1896 1.7053 -0.8909 0.0823 1.0013 -0.2465 -1.2102 0.2427 -1.7668 1.1339 -0.3943 -0.5572 -0.4593 0.1460 0.9232 -0.0346 -0.0349 0.7888 -0.8839 -0.4518 -0.4995 0.9072 -0.3206 -0.0917 -0.5783 -0.2239 0.7677 -0.3129 0.8220 -0.9005 0.4487 -0.4608 0.6328 -0.1694 -0.0949 -0.3233 0.8117 -1.3234 0.7339 -0.4313 0.6293
surf(x,x,max(z/1-1.2,-3),z/15+.5,EdgeC="g")
axis equal off
view(36,9)
[X,Y,Z]=cylinder(0.3)
X = 2×21
0.3000 0.2853 0.2427 0.1763 0.0927 0.0000 -0.0927 -0.1763 -0.2427 -0.2853 -0.3000 -0.2853 -0.2427 -0.1763 -0.0927 -0.0000 0.0927 0.1763 0.2427 0.2853 0.3000 0.3000 0.2853 0.2427 0.1763 0.0927 0.0000 -0.0927 -0.1763 -0.2427 -0.2853 -0.3000 -0.2853 -0.2427 -0.1763 -0.0927 -0.0000 0.0927 0.1763 0.2427 0.2853 0.3000
Y = 2×21
0 0.0927 0.1763 0.2427 0.2853 0.3000 0.2853 0.2427 0.1763 0.0927 0.0000 -0.0927 -0.1763 -0.2427 -0.2853 -0.3000 -0.2853 -0.2427 -0.1763 -0.0927 0 0 0.0927 0.1763 0.2427 0.2853 0.3000 0.2853 0.2427 0.1763 0.0927 0.0000 -0.0927 -0.1763 -0.2427 -0.2853 -0.3000 -0.2853 -0.2427 -0.1763 -0.0927 0
Z = 2×21
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Z=Z*10
Z = 2×21
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
surf(X,Y,Z)
surf(X,Y+3,Z)
surf(X,Y+6,Z)
text(-8,30,4,"🦁",'FontSize',100)
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