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# ME3255-Extra_Credit | |
# Electricity Usage | |
Task 1✘ | |
>> load(electricity.mat) | |
Undefined variable "electricity" or class "electricity.mat". | |
Task 1✘ | |
>> load(electricity load) | |
Error: Unexpected MATLAB expression. | |
Task 1✘ | |
>> load(electricity) | |
Undefined function or variable 'electricity'. | |
Task 1✔ | |
>> load electricity | |
Task 2✔ | |
>> usage | |
usage = | |
3.0484 2.5848 2.6408 | |
2.8610 2.5530 NaN | |
3.2602 2.7084 2.7345 | |
3.3420 2.8097 2.8019 | |
3.3555 2.9167 2.7960 | |
3.4234 2.9299 2.8579 | |
3.5268 3.1561 2.8597 | |
3.9185 3.3057 2.8757 | |
3.9718 3.4761 2.9984 | |
3.8540 3.4748 2.8998 | |
3.8934 3.5968 2.6826 | |
4.3127 3.7088 2.8427 | |
4.2153 3.7172 2.8301 | |
4.1711 3.7257 2.8542 | |
4.6605 3.9367 2.8512 | |
4.7528 4.0497 2.8671 | |
4.4847 3.9975 2.8715 | |
4.6216 4.1299 2.8487 | |
4.4413 3.9229 2.5176 | |
4.9899 4.1266 2.7653 | |
4.9913 4.1311 2.8143 | |
4.9864 4.1463 2.8135 | |
4.6270 4.1205 2.7001 | |
Task 3✘ | |
>> A(i,j) = 2.74 | |
Subscript indices must either be real positive integers or logicals. | |
Task 3✔ | |
>> usage(2,3) = 2.74 | |
usage = | |
3.0484 2.5848 2.6408 | |
2.8610 2.5530 2.7400 | |
3.2602 2.7084 2.7345 | |
3.3420 2.8097 2.8019 | |
3.3555 2.9167 2.7960 | |
3.4234 2.9299 2.8579 | |
3.5268 3.1561 2.8597 | |
3.9185 3.3057 2.8757 | |
3.9718 3.4761 2.9984 | |
3.8540 3.4748 2.8998 | |
3.8934 3.5968 2.6826 | |
4.3127 3.7088 2.8427 | |
4.2153 3.7172 2.8301 | |
4.1711 3.7257 2.8542 | |
4.6605 3.9367 2.8512 | |
4.7528 4.0497 2.8671 | |
4.4847 3.9975 2.8715 | |
4.6216 4.1299 2.8487 | |
4.4413 3.9229 2.5176 | |
4.9899 4.1266 2.7653 | |
4.9913 4.1311 2.8143 | |
4.9864 4.1463 2.8135 | |
4.6270 4.1205 2.7001 | |
Task 4✔ | |
>> res=usage(:,1) | |
res = | |
3.0484 | |
2.8610 | |
3.2602 | |
3.3420 | |
3.3555 | |
3.4234 | |
3.5268 | |
3.9185 | |
3.9718 | |
3.8540 | |
3.8934 | |
4.3127 | |
4.2153 | |
4.1711 | |
4.6605 | |
4.7528 | |
4.4847 | |
4.6216 | |
4.4413 | |
4.9899 | |
4.9913 | |
4.9864 | |
4.6270 | |
Task 5✔ | |
>> comm=usage(:,2) | |
comm = | |
2.5848 | |
2.5530 | |
2.7084 | |
2.8097 | |
2.9167 | |
2.9299 | |
3.1561 | |
3.3057 | |
3.4761 | |
3.4748 | |
3.5968 | |
3.7088 | |
3.7172 | |
3.7257 | |
3.9367 | |
4.0497 | |
3.9975 | |
4.1299 | |
3.9229 | |
4.1266 | |
4.1311 | |
4.1463 | |
4.1205 | |
Task 6✔ | |
>> ind=usage(:,3) | |
ind = | |
2.6408 | |
2.7400 | |
2.7345 | |
2.8019 | |
2.7960 | |
2.8579 | |
2.8597 | |
2.8757 | |
2.9984 | |
2.8998 | |
2.6826 | |
2.8427 | |
2.8301 | |
2.8542 | |
2.8512 | |
2.8671 | |
2.8715 | |
2.8487 | |
2.5176 | |
2.7653 | |
2.8143 | |
2.8135 | |
2.7001 | |
Task 7✔ | |
>> yrs = (1991:2013)' | |
yrs = | |
1991 | |
1992 | |
1993 | |
1994 | |
1995 | |
1996 | |
1997 | |
1998 | |
1999 | |
2000 | |
2001 | |
2002 | |
2003 | |
2004 | |
2005 | |
2006 | |
2007 | |
2008 | |
2009 | |
2010 | |
2011 | |
2012 | |
2013 | |
Task 8✔ | |
>> plot(yrs,res,'b--') | |
Task 9✔ | |
>> hold on | |
Task 10✔ | |
>> plot(yrs,comm,'k:') | |
Task 11✘ | |
>> plot(yrs,ind,'m-') | |
Task 11✔ | |
>> plot(yrs,ind,'m-.') | |
Task 12✔ | |
>> title('July Electricity Usage') | |
Task 13✔ | |
>> legend('res','comm','ind') | |
>> load(electricity.mat) | |
Undefined variable "electricity" or class "electricity.mat". | |
Task 1✘ | |
>> load(electricity load) | |
Error: Unexpected MATLAB expression. | |
Task 1✘ | |
>> load(electricity) | |
Undefined function or variable 'electricity'. | |
Task 1✔ | |
>> load electricity | |
Task 2✔ | |
>> usage | |
usage = | |
3.0484 2.5848 2.6408 | |
2.8610 2.5530 NaN | |
3.2602 2.7084 2.7345 | |
3.3420 2.8097 2.8019 | |
3.3555 2.9167 2.7960 | |
3.4234 2.9299 2.8579 | |
3.5268 3.1561 2.8597 | |
3.9185 3.3057 2.8757 | |
3.9718 3.4761 2.9984 | |
3.8540 3.4748 2.8998 | |
3.8934 3.5968 2.6826 | |
4.3127 3.7088 2.8427 | |
4.2153 3.7172 2.8301 | |
4.1711 3.7257 2.8542 | |
4.6605 3.9367 2.8512 | |
4.7528 4.0497 2.8671 | |
4.4847 3.9975 2.8715 | |
4.6216 4.1299 2.8487 | |
4.4413 3.9229 2.5176 | |
4.9899 4.1266 2.7653 | |
4.9913 4.1311 2.8143 | |
4.9864 4.1463 2.8135 | |
4.6270 4.1205 2.7001 | |
Task 3✘ | |
>> A(i,j) = 2.74 | |
Subscript indices must either be real positive integers or logicals. | |
Task 3✔ | |
>> usage(2,3) = 2.74 | |
usage = | |
3.0484 2.5848 2.6408 | |
2.8610 2.5530 2.7400 | |
3.2602 2.7084 2.7345 | |
3.3420 2.8097 2.8019 | |
3.3555 2.9167 2.7960 | |
3.4234 2.9299 2.8579 | |
3.5268 3.1561 2.8597 | |
3.9185 3.3057 2.8757 | |
3.9718 3.4761 2.9984 | |
3.8540 3.4748 2.8998 | |
3.8934 3.5968 2.6826 | |
4.3127 3.7088 2.8427 | |
4.2153 3.7172 2.8301 | |
4.1711 3.7257 2.8542 | |
4.6605 3.9367 2.8512 | |
4.7528 4.0497 2.8671 | |
4.4847 3.9975 2.8715 | |
4.6216 4.1299 2.8487 | |
4.4413 3.9229 2.5176 | |
4.9899 4.1266 2.7653 | |
4.9913 4.1311 2.8143 | |
4.9864 4.1463 2.8135 | |
4.6270 4.1205 2.7001 | |
Task 4✔ | |
>> res=usage(:,1) | |
res = | |
3.0484 | |
2.8610 | |
3.2602 | |
3.3420 | |
3.3555 | |
3.4234 | |
3.5268 | |
3.9185 | |
3.9718 | |
3.8540 | |
3.8934 | |
4.3127 | |
4.2153 | |
4.1711 | |
4.6605 | |
4.7528 | |
4.4847 | |
4.6216 | |
4.4413 | |
4.9899 | |
4.9913 | |
4.9864 | |
4.6270 | |
Task 5✔ | |
>> comm=usage(:,2) | |
comm = | |
2.5848 | |
2.5530 | |
2.7084 | |
2.8097 | |
2.9167 | |
2.9299 | |
3.1561 | |
3.3057 | |
3.4761 | |
3.4748 | |
3.5968 | |
3.7088 | |
3.7172 | |
3.7257 | |
3.9367 | |
4.0497 | |
3.9975 | |
4.1299 | |
3.9229 | |
4.1266 | |
4.1311 | |
4.1463 | |
4.1205 | |
Task 6✔ | |
>> ind=usage(:,3) | |
ind = | |
2.6408 | |
2.7400 | |
2.7345 | |
2.8019 | |
2.7960 | |
2.8579 | |
2.8597 | |
2.8757 | |
2.9984 | |
2.8998 | |
2.6826 | |
2.8427 | |
2.8301 | |
2.8542 | |
2.8512 | |
2.8671 | |
2.8715 | |
2.8487 | |
2.5176 | |
2.7653 | |
2.8143 | |
2.8135 | |
2.7001 | |
Task 7✔ | |
>> yrs = (1991:2013)' | |
yrs = | |
1991 | |
1992 | |
1993 | |
1994 | |
1995 | |
1996 | |
1997 | |
1998 | |
1999 | |
2000 | |
2001 | |
2002 | |
2003 | |
2004 | |
2005 | |
2006 | |
2007 | |
2008 | |
2009 | |
2010 | |
2011 | |
2012 | |
2013 | |
Task 8✔ | |
>> plot(yrs,res,'b--') | |
Task 9✔ | |
>> hold on | |
Task 10✔ | |
>> plot(yrs,comm,'k:') | |
Task 11✘ | |
>> plot(yrs,ind,'m-') | |
Task 11✔ | |
>> plot(yrs,ind,'m-.') | |
Task 12✔ | |
>> title('July Electricity Usage') | |
Task 13✔ | |
>> legend('res','comm','ind') | |
>> | |
#Audio Frequency | |
Task 1✔ | |
>> fs = 10; | |
Task 2✘ | |
>> t = 5:1/fs:15; | |
Task 2✔ | |
>> t = 0:1/fs:20; | |
Task 3✘ | |
>> y = sin(1.8*2*pi*t) + sin(2*pi*x) | |
Undefined function or variable 'x'. | |
Task 3✘ | |
>> y = sin(1.8*2*pi*t) + sin(2*pi*t) | |
y = | |
Columns 1 through 18 | |
0 1.4926 1.7216 0.7024 -0.3945 -0.5878 -0.1060 0.0470 -0.5829 -1.2723 -0.9511 0.4625 1.7954 1.7954 0.4625 -0.9511 -1.2723 -0.5829 | |
Columns 19 through 36 | |
0.0470 -0.1060 -0.5878 -0.3945 0.7024 1.7216 1.4926 0.0000 -1.4926 -1.7216 -0.7024 0.3945 0.5878 0.1060 -0.0470 0.5829 1.2723 0.9511 | |
Columns 37 through 54 | |
-0.4625 -1.7954 -1.7954 -0.4625 0.9511 1.2723 0.5829 -0.0470 0.1060 0.5878 0.3945 -0.7024 -1.7216 -1.4926 -0.0000 1.4926 1.7216 0.7024 | |
Columns 55 through 72 | |
-0.3945 -0.5878 -0.1060 0.0470 -0.5829 -1.2723 -0.9511 0.4625 1.7954 1.7954 0.4625 -0.9511 -1.2723 -0.5829 0.0470 -0.1060 -0.5878 -0.3945 | |
Columns 73 through 90 | |
0.7024 1.7216 1.4926 0.0000 -1.4926 -1.7216 -0.7024 0.3945 0.5878 0.1060 -0.0470 0.5829 1.2723 0.9511 -0.4625 -1.7954 -1.7954 -0.4625 | |
Columns 91 through 108 | |
0.9511 1.2723 0.5829 -0.0470 0.1060 0.5878 0.3945 -0.7024 -1.7216 -1.4926 -0.0000 1.4926 1.7216 0.7024 -0.3945 -0.5878 -0.1060 0.0470 | |
Columns 109 through 126 | |
-0.5829 -1.2723 -0.9511 0.4625 1.7954 1.7954 0.4625 -0.9511 -1.2723 -0.5829 0.0470 -0.1060 -0.5878 -0.3945 0.7024 1.7216 1.4926 0.0000 | |
Columns 127 through 144 | |
-1.4926 -1.7216 -0.7024 0.3945 0.5878 0.1060 -0.0470 0.5829 1.2723 0.9511 -0.4625 -1.7954 -1.7954 -0.4625 0.9511 1.2723 0.5829 -0.0470 | |
Columns 145 through 162 | |
0.1060 0.5878 0.3945 -0.7024 -1.7216 -1.4926 -0.0000 1.4926 1.7216 0.7024 -0.3945 -0.5878 -0.1060 0.0470 -0.5829 -1.2723 -0.9511 0.4625 | |
Columns 163 through 180 | |
1.7954 1.7954 0.4625 -0.9511 -1.2723 -0.5829 0.0470 -0.1060 -0.5878 -0.3945 0.7024 1.7216 1.4926 0.0000 -1.4926 -1.7216 -0.7024 0.3945 | |
Columns 181 through 198 | |
0.5878 0.1060 -0.0470 0.5829 1.2723 0.9511 -0.4625 -1.7954 -1.7954 -0.4625 0.9511 1.2723 0.5829 -0.0470 0.1060 0.5878 0.3945 -0.7024 | |
Columns 199 through 201 | |
-1.7216 -1.4926 -0.0000 | |
Task 3✔ | |
>> y = sin(1.8*2*pi*t) + sin(2.1*2*pi*t) | |
y = | |
Columns 1 through 18 | |
0 1.8734 1.2523 -0.9777 -1.8266 -0.2788 1.4798 1.1854 -0.5367 -1.3220 -0.3633 0.8044 0.7190 -0.1478 -0.4935 -0.1420 0.0860 -0.0577 | |
Columns 19 through 36 | |
0.0157 0.4190 0.3633 -0.4465 -0.9332 -0.1058 1.1535 1.0000 -0.6561 -1.6468 -0.4359 1.5181 1.5388 -0.5445 -1.9803 -0.7939 1.4551 1.7601 | |
Columns 37 through 54 | |
-0.2428 -1.8364 -0.9697 1.0551 1.5388 0.0471 -1.2730 -0.8106 0.5163 0.8968 0.1380 -0.4803 -0.2888 0.0638 -0.0000 -0.0638 0.2888 0.4803 | |
Columns 55 through 72 | |
-0.1380 -0.8968 -0.5163 0.8106 1.2730 -0.0471 -1.5388 -1.0551 0.9697 1.8364 0.2428 -1.7601 -1.4551 0.7939 1.9803 0.5445 -1.5388 -1.5181 | |
Columns 73 through 90 | |
0.4359 1.6468 0.6561 -1.0000 -1.1535 0.1058 0.9332 0.4465 -0.3633 -0.4190 -0.0157 0.0577 -0.0860 0.1420 0.4935 0.1478 -0.7190 -0.8044 | |
Columns 91 through 108 | |
0.3633 1.3220 0.5367 -1.1854 -1.4798 0.2788 1.8266 0.9777 -1.2523 -1.8734 -0.0000 1.8734 1.2523 -0.9777 -1.8266 -0.2788 1.4798 1.1854 | |
Columns 109 through 126 | |
-0.5367 -1.3220 -0.3633 0.8044 0.7190 -0.1478 -0.4935 -0.1420 0.0860 -0.0577 0.0157 0.4190 0.3633 -0.4465 -0.9332 -0.1058 1.1535 1.0000 | |
Columns 127 through 144 | |
-0.6561 -1.6468 -0.4359 1.5181 1.5388 -0.5445 -1.9803 -0.7939 1.4551 1.7601 -0.2428 -1.8364 -0.9697 1.0551 1.5388 0.0471 -1.2730 -0.8106 | |
Columns 145 through 162 | |
0.5163 0.8968 0.1380 -0.4803 -0.2888 0.0638 -0.0000 -0.0638 0.2888 0.4803 -0.1380 -0.8968 -0.5163 0.8106 1.2730 -0.0471 -1.5388 -1.0551 | |
Columns 163 through 180 | |
0.9697 1.8364 0.2428 -1.7601 -1.4551 0.7939 1.9803 0.5445 -1.5388 -1.5181 0.4359 1.6468 0.6561 -1.0000 -1.1535 0.1058 0.9332 0.4465 | |
Columns 181 through 198 | |
-0.3633 -0.4190 -0.0157 0.0577 -0.0860 0.1420 0.4935 0.1478 -0.7190 -0.8044 0.3633 1.3220 0.5367 -1.1854 -1.4798 0.2788 1.8266 0.9777 | |
Columns 199 through 201 | |
-1.2523 -1.8734 -0.0000 | |
Task 4✔ | |
>> plot(t,y) | |
Task 5✔ | |
>> yfft = fft(y) | |
yfft = | |
Columns 1 through 9 | |
0.0000 + 0.0000i 0.0007 - 0.0448i 0.0028 - 0.0898i 0.0063 - 0.1351i 0.0113 - 0.1808i 0.0178 - 0.2273i 0.0258 - 0.2746i 0.0355 - 0.3230i 0.0468 - 0.3726i | |
Columns 10 through 18 | |
0.0600 - 0.4237i 0.0751 - 0.4765i 0.0923 - 0.5314i 0.1117 - 0.5887i 0.1336 - 0.6487i 0.1583 - 0.7118i 0.1860 - 0.7786i 0.2170 - 0.8496i 0.2519 - 0.9255i | |
Columns 19 through 27 | |
0.2911 - 1.0072i 0.3352 - 1.0955i 0.3852 - 1.1918i 0.4418 - 1.2975i 0.5065 - 1.4144i 0.5807 - 1.5451i 0.6665 - 1.6927i 0.7667 - 1.8613i 0.8851 - 2.0567i | |
Columns 28 through 36 | |
1.0268 - 2.2869i 1.1995 - 2.5636i 1.4148 - 2.9047i 1.6914 - 3.3389i 2.0612 - 3.9159i 2.5857 - 4.7313i 3.3998 - 5.9964i 4.8791 - 8.3004i 8.6481 -14.1995i | |
Columns 37 through 45 | |
52.1546 -82.6959i -9.7052 +14.8683i -3.0073 + 4.4535i -0.3326 + 0.4764i 2.2099 - 3.0617i 7.1986 - 9.6519i 54.8155 -71.1486i -17.3938 +21.8612i -8.7273 +10.6237i | |
Columns 46 through 54 | |
-6.1917 + 7.3014i -4.9529 + 5.6589i -4.2083 + 4.6591i -3.7068 + 3.9772i -3.3442 + 3.4775i -3.0688 + 3.0929i -2.8520 + 2.7860i -2.6768 + 2.5342i -2.5321 + 2.3232i | |
Columns 55 through 63 | |
-2.4105 + 2.1433i -2.3069 + 1.9875i -2.2176 + 1.8510i -2.1399 + 1.7301i -2.0717 + 1.6220i -2.0113 + 1.5247i -1.9576 + 1.4364i -1.9096 + 1.3557i -1.8663 + 1.2816i | |
Columns 64 through 72 | |
-1.8273 + 1.2132i -1.7919 + 1.1498i -1.7597 + 1.0907i -1.7302 + 1.0353i -1.7033 + 0.9834i -1.6786 + 0.9345i -1.6559 + 0.8882i -1.6349 + 0.8443i -1.6156 + 0.8026i | |
Columns 73 through 81 | |
-1.5978 + 0.7629i -1.5812 + 0.7248i -1.5659 + 0.6884i -1.5517 + 0.6534i -1.5386 + 0.6198i -1.5264 + 0.5873i -1.5151 + 0.5559i -1.5045 + 0.5255i -1.4948 + 0.4960i | |
Columns 82 through 90 | |
-1.4858 + 0.4674i -1.4774 + 0.4395i -1.4696 + 0.4123i -1.4625 + 0.3858i -1.4559 + 0.3598i -1.4498 + 0.3343i -1.4443 + 0.3093i -1.4392 + 0.2848i -1.4346 + 0.2607i | |
Columns 91 through 99 | |
-1.4304 + 0.2369i -1.4267 + 0.2134i -1.4233 + 0.1902i -1.4204 + 0.1673i -1.4178 + 0.1445i -1.4157 + 0.1220i -1.4139 + 0.0996i -1.4125 + 0.0773i -1.4114 + 0.0552i | |
Columns 100 through 108 | |
-1.4107 + 0.0331i -1.4103 + 0.0110i -1.4103 - 0.0110i -1.4107 - 0.0331i -1.4114 - 0.0552i -1.4125 - 0.0773i -1.4139 - 0.0996i -1.4157 - 0.1220i -1.4178 - 0.1445i | |
Columns 109 through 117 | |
-1.4204 - 0.1673i -1.4233 - 0.1902i -1.4267 - 0.2134i -1.4304 - 0.2369i -1.4346 - 0.2607i -1.4392 - 0.2848i -1.4443 - 0.3093i -1.4498 - 0.3343i -1.4559 - 0.3598i | |
Columns 118 through 126 | |
-1.4625 - 0.3858i -1.4696 - 0.4123i -1.4774 - 0.4395i -1.4858 - 0.4674i -1.4948 - 0.4960i -1.5045 - 0.5255i -1.5151 - 0.5559i -1.5264 - 0.5873i -1.5386 - 0.6198i | |
Columns 127 through 135 | |
-1.5517 - 0.6534i -1.5659 - 0.6884i -1.5812 - 0.7248i -1.5978 - 0.7629i -1.6156 - 0.8026i -1.6349 - 0.8443i -1.6559 - 0.8882i -1.6786 - 0.9345i -1.7033 - 0.9834i | |
Columns 136 through 144 | |
-1.7302 - 1.0353i -1.7597 - 1.0907i -1.7919 - 1.1498i -1.8273 - 1.2132i -1.8663 - 1.2816i -1.9096 - 1.3557i -1.9576 - 1.4364i -2.0113 - 1.5247i -2.0717 - 1.6220i | |
Columns 145 through 153 | |
-2.1399 - 1.7301i -2.2176 - 1.8510i -2.3069 - 1.9875i -2.4105 - 2.1433i -2.5321 - 2.3232i -2.6768 - 2.5342i -2.8520 - 2.7860i -3.0688 - 3.0929i -3.3442 - 3.4775i | |
Columns 154 through 162 | |
-3.7068 - 3.9772i -4.2083 - 4.6591i -4.9529 - 5.6589i -6.1917 - 7.3014i -8.7273 -10.6237i -17.3938 -21.8612i 54.8155 +71.1486i 7.1986 + 9.6519i 2.2099 + 3.0617i | |
Columns 163 through 171 | |
-0.3326 - 0.4764i -3.0073 - 4.4535i -9.7052 -14.8683i 52.1546 +82.6959i 8.6481 +14.1995i 4.8791 + 8.3004i 3.3998 + 5.9964i 2.5857 + 4.7313i 2.0612 + 3.9159i | |
Columns 172 through 180 | |
1.6914 + 3.3389i 1.4148 + 2.9047i 1.1995 + 2.5636i 1.0268 + 2.2869i 0.8851 + 2.0567i 0.7667 + 1.8613i 0.6665 + 1.6927i 0.5807 + 1.5451i 0.5065 + 1.4144i | |
Columns 181 through 189 | |
0.4418 + 1.2975i 0.3852 + 1.1918i 0.3352 + 1.0955i 0.2911 + 1.0072i 0.2519 + 0.9255i 0.2170 + 0.8496i 0.1860 + 0.7786i 0.1583 + 0.7118i 0.1336 + 0.6487i | |
Columns 190 through 198 | |
0.1117 + 0.5887i 0.0923 + 0.5314i 0.0751 + 0.4765i 0.0600 + 0.4237i 0.0468 + 0.3726i 0.0355 + 0.3230i 0.0258 + 0.2746i 0.0178 + 0.2273i 0.0113 + 0.1808i | |
Columns 199 through 201 | |
0.0063 + 0.1351i 0.0028 + 0.0898i 0.0007 + 0.0448i | |
Task 6✔ | |
>> n = numel(y) | |
n = | |
201 | |
Task 7✔ | |
>> f = 0:fs/n:fs*(n-1)/n; | |
Task 8✔ | |
>> plot(f,abs(yfft)) |