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on 10 Oct 2021
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b=508
b = 508
image(zeros(b))
hold
Current plot held
X=linspace(-124,124,b)
X = 1×508
-124.0000 -123.5108 -123.0217 -122.5325 -122.0434 -121.5542 -121.0651 -120.5759 -120.0868 -119.5976 -119.1085 -118.6193 -118.1302 -117.6410 -117.1519 -116.6627 -116.1736 -115.6844 -115.1953 -114.7061 -114.2170 -113.7278 -113.2387 -112.7495 -112.2604 -111.7712 -111.2821 -110.7929 -110.3037 -109.8146
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a=-90:90
a = 1×181
-90 -89 -88 -87 -86 -85 -84 -83 -82 -81 -80 -79 -78 -77 -76 -75 -74 -73 -72 -71 -70 -69 -68 -67 -66 -65 -64 -63 -62 -61
x=70*cosd(a);
y=70*sind(a);
Y=[x x*.7;y -y]
Y = 2×362
0 1.2217 2.4430 3.6635 4.8830 6.1009 7.3170 8.5309 9.7421 10.9504 12.1554 13.3566 14.5538 15.7466 16.9345 18.1173 19.2946 20.4660 21.6312 22.7898 23.9414 25.0858 26.2225 27.3512 28.4716 29.5833 30.6860 31.7793 32.8630 33.9367 -70.0000 -69.9893 -69.9574 -69.9041 -69.8295 -69.7336 -69.6165 -69.4782 -69.3188 -69.1382 -68.9365 -68.7139 -68.4703 -68.2059 -67.9207 -67.6148 -67.2883 -66.9413 -66.5740 -66.1863 -65.7785 -65.3506 -64.9029 -64.4353 -63.9482 -63.4415 -62.9156 -62.3705 -61.8063 -61.2234
fill(Y(1,:)+270,Y(2,:)+120,'w')
axis([0 b 0 b])
colormap(bone)
[t,d]=cart2pol(X,X')
t = 508×508
-2.3562 -2.3542 -2.3522 -2.3502 -2.3482 -2.3462 -2.3442 -2.3422 -2.3402 -2.3381 -2.3361 -2.3340 -2.3320 -2.3299 -2.3278 -2.3257 -2.3236 -2.3215 -2.3194 -2.3173 -2.3151 -2.3130 -2.3109 -2.3087 -2.3065 -2.3044 -2.3022 -2.3000 -2.2978 -2.2956 -2.3582 -2.3562 -2.3542 -2.3522 -2.3502 -2.3482 -2.3462 -2.3442 -2.3421 -2.3401 -2.3381 -2.3360 -2.3339 -2.3319 -2.3298 -2.3277 -2.3256 -2.3235 -2.3214 -2.3193 -2.3171 -2.3150 -2.3128 -2.3107 -2.3085 -2.3063 -2.3042 -2.3020 -2.2998 -2.2976 -2.3602 -2.3582 -2.3562 -2.3542 -2.3522 -2.3502 -2.3482 -2.3462 -2.3441 -2.3421 -2.3400 -2.3380 -2.3359 -2.3338 -2.3318 -2.3297 -2.3276 -2.3255 -2.3234 -2.3212 -2.3191 -2.3170 -2.3148 -2.3127 -2.3105 -2.3083 -2.3061 -2.3039 -2.3017 -2.2995 -2.3621 -2.3602 -2.3582 -2.3562 -2.3542 -2.3522 -2.3502 -2.3481 -2.3461 -2.3441 -2.3420 -2.3400 -2.3379 -2.3358 -2.3337 -2.3317 -2.3296 -2.3275 -2.3253 -2.3232 -2.3211 -2.3189 -2.3168 -2.3146 -2.3125 -2.3103 -2.3081 -2.3059 -2.3037 -2.3015 -2.3641 -2.3622 -2.3602 -2.3582 -2.3562 -2.3542 -2.3522 -2.3501 -2.3481 -2.3461 -2.3440 -2.3420 -2.3399 -2.3378 -2.3357 -2.3337 -2.3316 -2.3295 -2.3273 -2.3252 -2.3231 -2.3209 -2.3188 -2.3166 -2.3145 -2.3123 -2.3101 -2.3079 -2.3057 -2.3035 -2.3662 -2.3642 -2.3622 -2.3602 -2.3582 -2.3562 -2.3542 -2.3522 -2.3501 -2.3481 -2.3460 -2.3440 -2.3419 -2.3398 -2.3378 -2.3357 -2.3336 -2.3315 -2.3293 -2.3272 -2.3251 -2.3229 -2.3208 -2.3186 -2.3165 -2.3143 -2.3121 -2.3099 -2.3077 -2.3055 -2.3682 -2.3662 -2.3642 -2.3622 -2.3602 -2.3582 -2.3562 -2.3542 -2.3521 -2.3501 -2.3480 -2.3460 -2.3439 -2.3419 -2.3398 -2.3377 -2.3356 -2.3335 -2.3314 -2.3292 -2.3271 -2.3250 -2.3228 -2.3206 -2.3185 -2.3163 -2.3141 -2.3119 -2.3097 -2.3075 -2.3702 -2.3682 -2.3662 -2.3642 -2.3622 -2.3602 -2.3582 -2.3562 -2.3542 -2.3521 -2.3501 -2.3480 -2.3459 -2.3439 -2.3418 -2.3397 -2.3376 -2.3355 -2.3334 -2.3313 -2.3291 -2.3270 -2.3248 -2.3227 -2.3205 -2.3183 -2.3161 -2.3139 -2.3117 -2.3095 -2.3722 -2.3702 -2.3683 -2.3663 -2.3643 -2.3623 -2.3603 -2.3582 -2.3562 -2.3542 -2.3521 -2.3500 -2.3480 -2.3459 -2.3438 -2.3417 -2.3396 -2.3375 -2.3354 -2.3333 -2.3311 -2.3290 -2.3269 -2.3247 -2.3225 -2.3203 -2.3182 -2.3160 -2.3138 -2.3115 -2.3743 -2.3723 -2.3703 -2.3683 -2.3663 -2.3643 -2.3623 -2.3603 -2.3582 -2.3562 -2.3541 -2.3521 -2.3500 -2.3479 -2.3459 -2.3438 -2.3417 -2.3396 -2.3374 -2.3353 -2.3332 -2.3310 -2.3289 -2.3267 -2.3246 -2.3224 -2.3202 -2.3180 -2.3158 -2.3136
d = 508×508
175.3625 175.0169 174.6721 174.3279 173.9845 173.6417 173.2996 172.9583 172.6176 172.2777 171.9384 171.6000 171.2622 170.9252 170.5889 170.2533 169.9185 169.5844 169.2511 168.9186 168.5868 168.2558 167.9256 167.5961 167.2674 166.9395 166.6124 166.2861 165.9606 165.6359 175.0169 174.6707 174.3252 173.9803 173.6362 173.2927 172.9500 172.6079 172.2666 171.9259 171.5860 171.2468 170.9084 170.5706 170.2336 169.8974 169.5619 169.2271 168.8931 168.5598 168.2274 167.8956 167.5647 167.2345 166.9051 166.5765 166.2487 165.9217 165.5954 165.2700 174.6721 174.3252 173.9790 173.6334 173.2886 172.9444 172.6010 172.2582 171.9162 171.5749 171.2342 170.8944 170.5552 170.2168 169.8791 169.5421 169.2059 168.8704 168.5357 168.2018 167.8686 167.5361 167.2045 166.8736 166.5435 166.2141 165.8856 165.5579 165.2309 164.9048 174.3279 173.9803 173.6334 173.2872 172.9416 172.5968 172.2527 171.9092 171.5665 171.2245 170.8832 170.5426 170.2027 169.8636 169.5252 169.1875 168.8506 168.5144 168.1790 167.8443 167.5104 167.1773 166.8449 166.5133 166.1825 165.8524 165.5232 165.1947 164.8670 164.5402 173.9845 173.6362 173.2886 172.9416 172.5954 172.2499 171.9050 171.5609 171.2175 170.8748 170.5328 170.1915 169.8509 169.5111 169.1720 168.8336 168.4960 168.1591 167.8229 167.4876 167.1529 166.8191 166.4860 166.1537 165.8221 165.4914 165.1614 164.8322 164.5038 164.1762 173.6417 173.2927 172.9444 172.5968 172.2499 171.9037 171.5581 171.2133 170.8692 170.5257 170.1830 169.8410 169.4998 169.1592 168.8194 168.4803 168.1420 167.8044 167.4676 167.1315 166.7961 166.4616 166.1277 165.7947 165.4624 165.1310 164.8003 164.4704 164.1413 163.8129 173.2996 172.9500 172.6010 172.2527 171.9050 171.5581 171.2119 170.8664 170.5215 170.1774 169.8340 169.4913 169.1493 168.8081 168.4676 168.1278 167.7887 167.4504 167.1129 166.7760 166.4400 166.1047 165.7702 165.4364 165.1034 164.7712 164.4398 164.1092 163.7793 163.4503 172.9583 172.6079 172.2582 171.9092 171.5609 171.2133 170.8664 170.5201 170.1746 169.8298 169.4857 169.1423 168.7996 168.4576 168.1164 167.7759 167.4361 167.0971 166.7588 166.4213 166.0845 165.7485 165.4133 165.0788 164.7451 164.4122 164.0800 163.7487 163.4181 163.0883 172.6176 172.2666 171.9162 171.5665 171.2175 170.8692 170.5215 170.1746 169.8284 169.4828 169.1380 168.7939 168.4505 168.1078 167.7659 167.4247 167.0842 166.7445 166.4055 166.0672 165.7298 165.3930 165.0571 164.7218 164.3874 164.0538 163.7209 163.3888 163.0575 162.7270 172.2777 171.9259 171.5749 171.2245 170.8748 170.5257 170.1774 169.8298 169.4828 169.1366 168.7911 168.4463 168.1021 167.7588 167.4161 167.0742 166.7330 166.3925 166.0528 165.7139 165.3757 165.0382 164.7015 164.3656 164.0304 163.6960 163.3624 163.0296 162.6976 162.3664
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image(200*ones(b),'AlphaData',rescale(abs(ifft2((((d.^2).^-.8)).*cos(6*rand(b)))),0,1))
axis off
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