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Alex Riley

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1713.96 (93rd) 		Reputation
92,593 (843rd)
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Title Δ
For each row, what is the fastest way to find the column holding nt... +1.23
Using bool array mask, replace False values with NaN 0.00
Numpy function to get shape of added arrays 0.00
Convert A Column In Pandas to One Long String (Python 3) -2.69
How do I "or" each column in a DataFrame with a vector? +1.47
pandas: how to eliminate rows with value ending with a specific cha... +1.20
Convert Pandas Distance Matrix DataFrame to Rows 0.00
Keep only the first row of consecutive duplicate rows in a DataFrame 0.00
How to remove DataFrame rows where a column's values are in a s... 0.00
Save result of multiplication to existing array 0.00
Pandas DataFrame get substrings from column +0.94
Fastest way to initialize numpy array with values given by function +0.30
Pandas opposite of fillna(0) +0.28
Python: How can I force 1-element NumPy arrays to be two-dimensional? +0.29
Efficient 2d cumsum +1.64
How to index pandas DataFrames by selecting times in a particular i... 0.00
Dimension change on np.array +0.89
pandas iloc vs ix vs loc explanation? +0.28
Python: setting two variable values separated by a comma in python +0.32
Difference in output between numpy linspace and numpy logspace +0.92
Dot products of columns of mixed shaped arrays 0.00
Fill larger matrix from smaller matrix +0.91
Numpy Advanced Indexing with 1D array +1.57
How to set current row item to previous if smaller, in Pandas? -0.63
TyperError when converting NaN's into number in DataFrame 0.00
Python: prevent values in Pandas Series rounding to integer 0.00
Partial sum over an array given a list of indices 0.00
Concatenate list and number in a sublist in Python +1.93
3D Array indexing in NumPy to reduce number of rows 0.00
Numpy indexing 3-dimensional array into 2-dimensional array +0.91
Minimum distance between two elements of a circular list? 0.00
Find difference between 2 columns with Nulls using pandas +0.32
Sort three dimensional numpy array with two axes sorting constraints 0.00
get the index of the last negative value in a 2d array per column +1.09
Subsetting a 2D numpy array +1.12
Factorial of a matrix elementwise with Numpy 0.00
Multiply high order matrices with numpy +0.29
Numerical error when converting array to list +1.76
Convert String With Comma To Number Using Python Pandas 0.00
How to count distance to the previous zero in pandas series? +0.15
Find 2d array inside a 3d array +0.29
NumPy broadcasting doesn't work 0.00
Strange behavior of tuple indexing a numpy array 0.00
Assign values in new column 0.00
Define the bottom of each bar in a stacked bar graph +0.31
numpy: fill offset diagonal with different values 0.00
copy numpy array efficiently +0.31
How to use np.where to find index where a value is in between array... +1.12
Vectorize np.arange or equivalent 0.00
Most memory-efficient way to compute abs()**2 of complex numpy ndar... +1.38