Python: Extracting float values from array of lists -


during data processing create array looking this:

[array([ 0.08606408]) array([ 0.26071976])  array([ 0.181566  ,  0.94154611]) array([ 0.1734347 ,  0.94160601])  array([ 0.17859844,  0.94167483]) array([ 0.16880761,  0.94156277])  array([ 0.17624151,  0.94149038]) array([ 0.18770433,  0.94181287])  array([ 0.16707977,  0.94227733]) array([ 0.94162233])  array([ 0.9426902,  0.9615621]) array([ 0.94195127,  0.96174422])  array([ 0.94237795,  0.96195226,  0.98059446])  array([ 0.94249657,  0.96219391,  0.98095329])  array([ 0.94280697,  0.96286183,  0.98109352])  array([ 0.94267473,  0.96304417,  0.98252799])] 

created in following manner:

peakpositions = [] peakpositions.append(stuff) 

how extract float values single 1d numpy array? want this:

[0.08606408, 0.26071976, 0.181566 ... 0.98252799] 

thanks in advance!

you can concatenate inner arrays :

peakpositions=np.concatenate(peakpositions) 

demo :

>>> l= [[array([ 0.08606408]), array([ 0.26071976]),        array([ 0.181566  ,  0.94154611]),        array([ 0.1734347 ,  0.94160601]),        array([ 0.17859844,  0.94167483]),        array([ 0.16880761,  0.94156277]),        array([ 0.17624151,  0.94149038]),        array([ 0.18770433,  0.94181287]),        array([ 0.16707977,  0.94227733]), array([ 0.94162233]),        array([ 0.9426902,  0.9615621]), array([ 0.94195127,  0.96174422]),        array([ 0.94237795,  0.96195226,  0.98059446]),        array([ 0.94249657,  0.96219391,  0.98095329]),        array([ 0.94280697,  0.96286183,  0.98109352]),        array([ 0.94267473,  0.96304417,  0.98252799])] >>> np.concatenate(l) array([ 0.08606408,  0.26071976,  0.181566  ,  0.94154611,  0.1734347 ,         0.94160601,  0.17859844,  0.94167483,  0.16880761,  0.94156277,         0.17624151,  0.94149038,  0.18770433,  0.94181287,  0.16707977,         0.94227733,  0.94162233,  0.9426902 ,  0.9615621 ,  0.94195127,         0.96174422,  0.94237795,  0.96195226,  0.98059446,  0.94249657,         0.96219391,  0.98095329,  0.94280697,  0.96286183,  0.98109352,         0.94267473,  0.96304417,  0.98252799]) >>>  

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