8000 (fixed_dtype, shape) view of recarray broken (Trac #2187) · Issue #640 · numpy/numpy · GitHub
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numpy-gitbot opened this issue Oct 19, 2012 · 3 comments
Closed

(fixed_dtype, shape) view of recarray broken (Trac #2187) #640

numpy-gitbot opened this issue Oct 19, 2012 · 3 comments
Labels
00 - Bug component: numpy._core
Milestone
NumPy 1.7

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@numpy-gitbot
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Original ticket http://projects.scipy.org/numpy/ticket/2187 on 2012-07-22 by @rgommers, assigned to unknown.

Broken by #350:

>>> import statsmodels.api as sm
>>> dta = sm.datasets.macrodata.load()
>>> dta.data[['infl', 'realgdp']].view((float,2))
Traceback (most recent call last):
  File "tmp.py", line 4, in <module>
    dta.data[['infl', 'realgdp']].view((float,2))
  File "/Users/rgommers/Code/numpy/numpy/core/records.py", line 496, in view
    return self.__array__().view(dtype)
ValueError: new type not compatible with array.

Works with 578a4199, broken with bc1005324. Looks like a blocker for 1.7.0 to me.
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@rgommers wrote on 2012-07-22

Didn't check, but looks like there are no tests for funky dtype specifiers like this.....

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@rgommers wrote on 2012-08-19

Conversation about this at http://thread.gmane.org/gmane.comp.python.numeric.general/51045/focus=51072

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trac user ocertik wrote on 2012-08-31

This was fixed by #401:

In [1]: import statsmodels.api as sm

In [2]: dta = sm.datasets.macrodata.load()

In [3]: dta.data[['infl', 'realgdp']].view((float,2))
Out[3]: 
array([[     0.   ,   2710.349],
       [     2.34 ,   2778.801],
       [     2.74 ,   2775.488],
       [     0.27 ,   2785.204],
       [     2.31 ,   2847.699],
       [     0.14 ,   2834.39 ],
       [     2.7  ,   2839.022],
       [     1.21 ,   2802.616],
       [    -0.4  ,   2819.264],
       [     1.47 ,   2872.005],
       [     0.8  ,   2918.419],
       [     0.8  ,   2977.83 ],
       [     2.26 ,   3031.241],
       [     0.13 ,   3064.709],
       [     2.11 ,   3093.047],
       [     0.79 ,   3100.563],
       [     0.53 ,   3141.087],
       [     2.75 ,   3180.447],
       [     0.78 ,   3240.332],
       [     2.46 ,   3264.967],
       [     0.13 ,   3338.246],
       [     0.9  ,   3376.587],
       [     1.29 ,   3422.469],
       [     2.05 ,   3431.957],
       [     1.28 ,   3516.251],
       [     2.54 ,   3563.96 ],
       [     0.89 ,   3636.285],
       [     2.9  ,   3724.014],
       [     4.99 ,   3815.423],
       [     2.1  ,   3828.124],
       [     4.9  ,   3853.301],
       [     0.61 ,   3884.52 ],
       [     2.42 ,   3918.74 ],
       [     3.61 ,   3919.556],
       [     3.58 ,   3950.826],
       [     4.72 ,   3980.97 ],
       [     3.5  ,   4063.013],
       [     5.77 ,   4131.998],
       [     4.56 ,   4160.267],
       [     4.51 ,   4178.293],
       [     6.67 ,   4244.1  ],
       [     5.47 ,   4256.46 ],
       [     5.4  ,   4283.378],
       [     6.38 ,   4263.261],
       [     6.28 ,   4256.573],
       [     4.13 ,   4264.289],
       [     5.11 ,   4302.259],
       [     5.04 ,   4256.637],
       [     2.   ,   4374.016],
       [     4.96 ,   4398.829],
       [     2.94 ,   4433.943],
       [     2.92 ,   4446.264],
       [     2.9  ,   4525.769],
       [     2.88 ,   4633.101],
       [     3.81 ,   4677.503],
       [     4.71 ,   4754.546],
       [     9.26 ,   4876.166],
       [     4.55 ,   4932.571],
       [    12.47 ,   4906.252],
       [    10.39 ,   4953.05 ],
       [    10.96 ,   4909.617],
       [     9.86 ,   4922.188],
       [    13.56 ,   4873.52 ],
       [    10.07 ,   4854.34 ],
       [     5.32 ,   4795.295],
       [     7.48 ,   4831.942],
       [     6.61 ,   4913.328],
       [     6.5  ,   4977.511],
       [     2.14 ,   5090.663],
       [     6.37 ,   5128.947],
       [     6.27 ,   5154.072],
       [     5.49 ,   5191.499],
       [     8.76 ,   5251.762],
       [     5.3  ,   5356.131],
       [     5.23 ,   5451.921],
       [     7.08 ,   5450.793],
       [     7.58 ,   5469.405],
       [     9.89 ,   5684.569],
       [     9.65 ,   5740.3  ],
       [     8.26 ,   5816.222],
       [    12.08 ,   5825.949],
       [    13.37 ,   5831.418],
       [    11.88 ,   5873.335],
       [    14.62 ,   5889.495],
       [    14.6  ,   5908.467],
       [     8.32 ,   5787.373],
       [    10.04 ,   5776.617],
       [    11.64 ,   5883.46 ],
       [     8.62 ,   6005.717],
       [    10.63 ,   5957.795],
       [     8.22 ,   6030.184],
       [     4.26 ,   5955.062],
       [     2.53 ,   5857.333],
       [    10.39 ,   5889.074],
       [     2.45 ,   5866.37 ],
       [    -0.82 ,   5871.001],
       [     3.66 ,   5944.02 ],
       [     4.03 ,   6077.619],
       [     3.99 ,   6197.468],
       [     5.13 ,   6325.574],
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       [     3.09 ,   6559.594],
       [     3.82 ,   6623.343],
       [     2.28 ,   6677.264],
       [     4.89 ,   6740.275],
       [     2.61 ,   6797.344],
       [     2.96 ,   6903.523],
       [     5.13 ,   6955.918],
       [    -4.39 ,   7022.757],
       [     2.93 ,   7050.969],
       [     2.55 ,   7118.95 ],
       [     4.33 ,   7153.359],
       [     4.64 ,   7193.019],
       [     3.89 ,   7269.51 ],
       [     4.2  ,   7332.558],
       [     3.46 ,   7458.022],
       [     4.12 ,   7496.6  ],
       [     4.41 ,   7592.881],
       [     4.7  ,   7632.082],
       [     4.31 ,   7733.991],
       [     6.22 ,   7806.603],
       [     4.52 ,   7865.016],
       [     2.88 ,   7927.393],
       [     6.64 ,   7944.697],
       [     4.37 ,   8027.693],
       [     4.93 ,   8059.598],
       [     8.79 ,   8059.476],
       [     3.88 ,   7988.864],
       [     1.19 ,   7950.164],
       [     3.24 ,   8003.822],
       [     2.93 ,   8037.538],
       [     3.19 ,   8069.046],
       [     3.17 ,   8157.616],
       [     3.14 ,   8244.294],
       [     3.4  ,   8329.361],
       [     3.09 ,   8417.016],
       [     2.79 ,   8432.485],
       [     1.94 ,   8486.435],
       [     3.03 ,   8531.108],
       [     1.92 ,   8643.769],
       [     2.45 ,   8727.919],
       [     3.25 ,   8847.303],
       [     2.69 ,   8904.289],
       [     2.93 ,   9003.18 ],
       [     3.44 ,   9025.267],
       [     2.1  ,   9044.668],
       [     2.35 ,   9120.684],
       [     3.11 ,   9184.275],
       [     3.6  ,   9247.188],
       [     2.3  ,   9407.052],
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       [     3.02 ,   9592.458],
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       [     1.24 ,  10008.874],
       [     0.49 ,  10103.425],
       [     2.46 ,  10194.277],
       [     1.71 ,  10328.787],
       [     1.95 ,  10507.575],
       [     2.9  ,  10601.179],
       [     1.92 ,  10684.049],
       [     3.35 ,  10819.914],
       [     2.85 ,  11014.254],
       [     3.76 ,  11043.044],
       [     4.19 ,  11258.454],
       [     2.77 ,  11267.867],
       [     3.89 ,  11334.544],
       [     1.82 ,  11297.171],
       [     2.26 ,  11371.251],
       [     0.45 ,  11340.075],
       [     0.23 ,  11380.128],
       [     3.59 ,  11477.868],
       [     1.56 ,  11538.77 ],
       [     2.66 ,  11596.43 ],
       [     3.08 ,  11598.824],
       [     1.31 ,  11645.819],
       [     1.09 ,  11738.706],
       [     2.6  ,  11935.461],
       [     3.02 ,  12042.817],
       [     2.35 ,  12127.623],
       [     3.61 ,  12213.818],
       [     3.58 ,  12303.533],
       [     2.09 ,  12410.282],
       [     4.15 ,  12534.113],
       [     1.85 ,  12587.535],
       [     9.14 ,  12683.153],
       [     0.4  ,  12748.699],
       [     2.6  ,  12915.938],
       [     3.97 ,  12962.462],
       [    -1.58 ,  12965.916],
       [     3.3  ,  13060.679],
       [     4.58 ,  13099.901],
       [     2.75 ,  13203.977],
       [     3.45 ,  13321.109],
       [     6.38 ,  13391.249],
       [     2.82 ,  13366.865],
       [     8.53 ,  13415.266],
       [    -3.16 ,  13324.6  ],
       [    -8.79 ,  13141.92 ],
       [     0.94 ,  12925.41 ],
       [     3.37 ,  12901.504],
       [     3.56 ,  12990.341]])

In [4]: import numpy

In [5]: numpy.__version__
Out[5]: '1.8.0.dev-c6d8734'

@numpy-gitbot numpy-gitbot mentioned this issue Oct 19, 2012
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