How does NumPy's transpose() method permute the axes of an array? Question: In [28]: arr = np.arange(16).reshape((2, 2, 4)) In [29]: arr Out[29]: array([[[ 0, 1, 2, 3], [ 4, 5, 6, 7]], [[ 8, 9, 10, 11], [12, 13, 14, 15]]]) In [32]: arr.transpose((1, 0, 2)) Out[32]: array([[[ 0, 1, 2, 3], [ 8, …
How to switch columns rows in a pandas dataframe Question: I have the following dataframe: 0 1 0 enrichment_site value 1 last_updated value 2 image_names value 3 shipping_weight value 4 ean_gtin value 5 stockqty value 6 height__mm value 7 availability value 8 rrp value 9 sku value 10 price_band value 11 item value I tried …
How to pivot a dataframe in Pandas? Question: I have a table in csv format that looks like this. I would like to transpose the table so that the values in the indicator name column are the new columns, Indicator Country Year Value 1 Angola 2005 6 2 Angola 2005 13 3 Angola 2005 10 …
Numpy transpose of 1D array not giving expected result Question: I am trying a very basic example in Python scipy module for transpose() method but it’s not giving expected result. I am using Ipython with pylab mode. a = array([1,2,3] print a.shape >> (3,) b = a.transpose() print b.shape >> (3,) If I print the …
Transpose list of lists Question: Let’s take: l = [[1, 2, 3], [4, 5, 6], [7, 8, 9]] The result I’m looking for is r = [[1, 4, 7], [2, 5, 8], [3, 6, 9]] and not r = [(1, 4, 7), (2, 5, 8), (3, 6, 9)] Asked By: titus || Source Answers: Python …
Transposing a 1D NumPy array Question: I use Python and NumPy and have some problems with “transpose”: import numpy as np a = np.array([5,4]) print(a) print(a.T) Invoking a.T is not transposing the array. If a is for example [[],[]] then it transposes correctly, but I need the transpose of […,…,…]. Asked By: thaking || Source …
How to transpose a dataset in a csv file? Question: For example, i would like to transform: Name,Time,Score Dan,68,20 Suse,42,40 Tracy,50,38 Into: Name,Dan,Suse,Tracy Time,68,42,50 Score,20,40,38 Edit: The original question used the term "transpose" incorrectly. Asked By: zr. || Source Answers: If lines is the list of your original text than it should be for i …
Transpose/Unzip Function (inverse of zip)? Question: I have a list of 2-item tuples and I’d like to convert them to 2 lists where the first contains the first item in each tuple and the second list holds the second item. For example: original = [(‘a’, 1), (‘b’, 2), (‘c’, 3), (‘d’, 4)] # and I …
