%matplotlib inline
import numpy as np
import matplotlib.pyplot as plt
A = np.random.randn(100)
A
array([ 1.19993564e+00, -1.07382909e-01, -4.48656570e-01, -2.88730647e-01, -6.87947112e-01, -1.55323690e-01, 6.21585294e-01, 6.03458264e-01, -1.74007992e+00, -6.87242527e-01, 3.71267973e-01, -7.75451209e-01, -9.82962702e-02, -1.30264410e+00, 1.06524021e+00, -1.01460282e+00, -3.72156601e-01, 4.65383336e-01, 1.38725624e-01, 2.24821411e-01, -8.46471670e-01, -1.35138896e+00, -2.17394916e+00, -4.34245305e-01, 1.56569442e+00, 5.27921026e-02, 1.21255142e+00, 6.89946529e-01, 1.44395598e+00, 1.24779707e+00, 1.04922259e+00, 3.83530293e-01, -1.10753424e+00, 6.65443419e-01, -7.01208396e-01, -3.38254042e-01, 1.47194135e+00, 8.88272184e-01, 8.90112746e-01, 1.64150838e+00, -1.43190934e+00, 8.40109551e-01, -9.16680829e-01, -4.53802137e-01, 4.94865407e-01, 6.70913480e-01, 1.72538013e-01, -1.43523153e-01, 2.85753159e-01, -7.28067539e-01, -4.07053633e-01, -8.79591675e-01, -1.34869934e+00, 2.72956000e-02, 3.43784363e-01, -1.83524537e+00, -1.17912480e-03, -6.09498345e-01, 1.31161474e+00, -1.29624280e+00, -5.60345322e-01, -4.23850638e-01, -1.14797394e+00, -4.72691507e-01, 1.44876006e+00, -4.91592245e-01, 8.67985079e-01, 1.15881891e+00, -5.91524787e-01, -1.40488622e+00, -1.40208118e+00, 2.19742584e+00, 9.60065441e-01, 1.00489014e+00, 1.24130307e-01, 6.35934737e-01, 4.70193658e-02, -6.52684238e-02, -1.33889598e+00, 1.32200392e+00, -1.43786338e+00, 1.83666374e-01, 8.01210323e-01, -2.79216521e-01, -1.32888717e+00, -4.70390902e-01, 1.11597768e+00, -1.18885768e+00, -1.30573074e+00, -1.36790702e+00, -5.80052578e-01, -7.10247160e-01, -1.91515848e-01, 2.92893761e-01, -5.91517041e-01, 8.50849397e-01, -1.87304390e-01, -1.25291996e+00, -1.81408169e+00, -8.45116749e-01])
A = 10*A + 50
A
array([ 61.99935645, 48.92617091, 45.5134343 , 47.11269353, 43.12052888, 48.4467631 , 56.21585294, 56.03458264, 32.59920076, 43.12757473, 53.71267973, 42.24548791, 49.0170373 , 36.97355901, 60.6524021 , 39.8539718 , 46.27843399, 54.65383336, 51.38725624, 52.24821411, 41.5352833 , 36.48611042, 28.2605084 , 45.65754695, 65.65694425, 50.52792103, 62.12551419, 56.89946529, 64.43955984, 62.4779707 , 60.49222586, 53.83530293, 38.92465764, 56.65443419, 42.98791604, 46.61745958, 64.71941352, 58.88272184, 58.90112746, 66.41508382, 35.68090663, 58.40109551, 40.83319171, 45.46197863, 54.94865407, 56.7091348 , 51.72538013, 48.56476847, 52.85753159, 42.71932461, 45.92946367, 41.20408325, 36.51300657, 50.272956 , 53.43784363, 31.64754625, 49.98820875, 43.90501655, 63.11614744, 37.03757198, 44.39654678, 45.76149362, 38.5202606 , 45.27308493, 64.48760056, 45.08407755, 58.67985079, 61.58818914, 44.08475213, 35.9511378 , 35.97918823, 71.97425836, 59.60065441, 60.04890137, 51.24130307, 56.35934737, 50.47019366, 49.34731576, 36.61104016, 63.2200392 , 35.62136623, 51.83666374, 58.01210323, 47.20783479, 36.71112832, 45.29609098, 61.15977681, 38.11142324, 36.94269264, 36.32092984, 44.19947422, 42.8975284 , 48.08484152, 52.92893761, 44.08482959, 58.50849397, 48.1269561 , 37.47080042, 31.85918311, 41.54883251])
A.shape
(100,)
A.shape = (5, 20)
A
array([[ 61.99935645, 48.92617091, 45.5134343 , 47.11269353, 43.12052888, 48.4467631 , 56.21585294, 56.03458264, 32.59920076, 43.12757473, 53.71267973, 42.24548791, 49.0170373 , 36.97355901, 60.6524021 , 39.8539718 , 46.27843399, 54.65383336, 51.38725624, 52.24821411], [ 41.5352833 , 36.48611042, 28.2605084 , 45.65754695, 65.65694425, 50.52792103, 62.12551419, 56.89946529, 64.43955984, 62.4779707 , 60.49222586, 53.83530293, 38.92465764, 56.65443419, 42.98791604, 46.61745958, 64.71941352, 58.88272184, 58.90112746, 66.41508382], [ 35.68090663, 58.40109551, 40.83319171, 45.46197863, 54.94865407, 56.7091348 , 51.72538013, 48.56476847, 52.85753159, 42.71932461, 45.92946367, 41.20408325, 36.51300657, 50.272956 , 53.43784363, 31.64754625, 49.98820875, 43.90501655, 63.11614744, 37.03757198], [ 44.39654678, 45.76149362, 38.5202606 , 45.27308493, 64.48760056, 45.08407755, 58.67985079, 61.58818914, 44.08475213, 35.9511378 , 35.97918823, 71.97425836, 59.60065441, 60.04890137, 51.24130307, 56.35934737, 50.47019366, 49.34731576, 36.61104016, 63.2200392 ], [ 35.62136623, 51.83666374, 58.01210323, 47.20783479, 36.71112832, 45.29609098, 61.15977681, 38.11142324, 36.94269264, 36.32092984, 44.19947422, 42.8975284 , 48.08484152, 52.92893761, 44.08482959, 58.50849397, 48.1269561 , 37.47080042, 31.85918311, 41.54883251]])
A.reshape(100,1)
array([[ 61.99935645], [ 48.92617091], [ 45.5134343 ], [ 47.11269353], [ 43.12052888], [ 48.4467631 ], [ 56.21585294], [ 56.03458264], [ 32.59920076], [ 43.12757473], [ 53.71267973], [ 42.24548791], [ 49.0170373 ], [ 36.97355901], [ 60.6524021 ], [ 39.8539718 ], [ 46.27843399], [ 54.65383336], [ 51.38725624], [ 52.24821411], [ 41.5352833 ], [ 36.48611042], [ 28.2605084 ], [ 45.65754695], [ 65.65694425], [ 50.52792103], [ 62.12551419], [ 56.89946529], [ 64.43955984], [ 62.4779707 ], [ 60.49222586], [ 53.83530293], [ 38.92465764], [ 56.65443419], [ 42.98791604], [ 46.61745958], [ 64.71941352], [ 58.88272184], [ 58.90112746], [ 66.41508382], [ 35.68090663], [ 58.40109551], [ 40.83319171], [ 45.46197863], [ 54.94865407], [ 56.7091348 ], [ 51.72538013], [ 48.56476847], [ 52.85753159], [ 42.71932461], [ 45.92946367], [ 41.20408325], [ 36.51300657], [ 50.272956 ], [ 53.43784363], [ 31.64754625], [ 49.98820875], [ 43.90501655], [ 63.11614744], [ 37.03757198], [ 44.39654678], [ 45.76149362], [ 38.5202606 ], [ 45.27308493], [ 64.48760056], [ 45.08407755], [ 58.67985079], [ 61.58818914], [ 44.08475213], [ 35.9511378 ], [ 35.97918823], [ 71.97425836], [ 59.60065441], [ 60.04890137], [ 51.24130307], [ 56.35934737], [ 50.47019366], [ 49.34731576], [ 36.61104016], [ 63.2200392 ], [ 35.62136623], [ 51.83666374], [ 58.01210323], [ 47.20783479], [ 36.71112832], [ 45.29609098], [ 61.15977681], [ 38.11142324], [ 36.94269264], [ 36.32092984], [ 44.19947422], [ 42.8975284 ], [ 48.08484152], [ 52.92893761], [ 44.08482959], [ 58.50849397], [ 48.1269561 ], [ 37.47080042], [ 31.85918311], [ 41.54883251]])
A = A.reshape(100,1)
A
array([[ 61.99935645], [ 48.92617091], [ 45.5134343 ], [ 47.11269353], [ 43.12052888], [ 48.4467631 ], [ 56.21585294], [ 56.03458264], [ 32.59920076], [ 43.12757473], [ 53.71267973], [ 42.24548791], [ 49.0170373 ], [ 36.97355901], [ 60.6524021 ], [ 39.8539718 ], [ 46.27843399], [ 54.65383336], [ 51.38725624], [ 52.24821411], [ 41.5352833 ], [ 36.48611042], [ 28.2605084 ], [ 45.65754695], [ 65.65694425], [ 50.52792103], [ 62.12551419], [ 56.89946529], [ 64.43955984], [ 62.4779707 ], [ 60.49222586], [ 53.83530293], [ 38.92465764], [ 56.65443419], [ 42.98791604], [ 46.61745958], [ 64.71941352], [ 58.88272184], [ 58.90112746], [ 66.41508382], [ 35.68090663], [ 58.40109551], [ 40.83319171], [ 45.46197863], [ 54.94865407], [ 56.7091348 ], [ 51.72538013], [ 48.56476847], [ 52.85753159], [ 42.71932461], [ 45.92946367], [ 41.20408325], [ 36.51300657], [ 50.272956 ], [ 53.43784363], [ 31.64754625], [ 49.98820875], [ 43.90501655], [ 63.11614744], [ 37.03757198], [ 44.39654678], [ 45.76149362], [ 38.5202606 ], [ 45.27308493], [ 64.48760056], [ 45.08407755], [ 58.67985079], [ 61.58818914], [ 44.08475213], [ 35.9511378 ], [ 35.97918823], [ 71.97425836], [ 59.60065441], [ 60.04890137], [ 51.24130307], [ 56.35934737], [ 50.47019366], [ 49.34731576], [ 36.61104016], [ 63.2200392 ], [ 35.62136623], [ 51.83666374], [ 58.01210323], [ 47.20783479], [ 36.71112832], [ 45.29609098], [ 61.15977681], [ 38.11142324], [ 36.94269264], [ 36.32092984], [ 44.19947422], [ 42.8975284 ], [ 48.08484152], [ 52.92893761], [ 44.08482959], [ 58.50849397], [ 48.1269561 ], [ 37.47080042], [ 31.85918311], [ 41.54883251]])