Questions tagged [reshape]
In R, Matlab, NumPy and APL, reshape functions allow data to be transformed into more convenient forms.
reshape
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Pandas move levels of a composite column as a value
Let's imagine as a starting point I have a dataframe, similar to the one below (using a tuple for the composite columns):
Index, (ATop,AMiddle,ABottom,filt1_1, filt2_1), (ATop,AMiddle,ABottom,filt1_2,...
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reshape a tensor in firebase cloud functions
Im working on a machine learning project and since I don't know the amount of categories in the dependend variables I don't want to hardcode it. In my project now I have 3 different categories but I ...
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3
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Convert vector to matrix by blocks -reshape
just a quick question
I am struggling in R to convert a list of numbers to a matrix that has a fixed number of rows
and the numbers are placed in triplets (blocks of 3 rows) at a time
The elements are ...
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How can I add a dimension to Torch tensor with values of first two dimensions repeated in the new dimension
I have a Tensor of shape [a,b]. How can I reshape it to [a,b,c] such that all the values along the new dimensions repeat values of the i,j entry of the original tensor of shape [a,b]?
ex: a = 2, b= 3
...
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pivot_longer with multiple columns with different column name patterns and count column [duplicate]
I have looked at multiple posts but have not seen this exact situation addressed. The linked examples have more consistent variable names (not single/multiple underscores) and do not add the count ...
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1
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Numpy reshape() to display 2D array in 3D programmatically
Example Data
I have an array of weather data by lat/lon in the following shape: (1038240,4) (See photo for sample example data)
I want to reshape this to the shape (4,721,1440) which would be four ...
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how to build a vae without reshape error?
I build a VAE following https://blog.tensorflow.org/2019/03/variational-autoencoders-with.html
PROBLEM: I thick the problem is in the decoder when I want to reshape the latent Distribution i face this ...
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Converting two 2d arrays of different shapes into a 3d array
How to convert two 2d arrays of shapes (629, 5) and (629, 6) into a 3d array of shape (629, 5, 6)?
Input:
[[2, 5, 6, 7, 8],
[3, 5, 6, 7, 8],
[4, 5, 6, 7, 8]]
[[2, 5, 6, 7, 8, 9],
[3, 5, 6, 7, 8, 9]...
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cannot reshape array of size 4 into shape (4,4) in DataFrame where clause
Can anyone explain to me what is going on? Here's the piece of code. If I have the DataFrame of precisely length 4, the statement in the try clause throws an exception. If I make the dataframe of any ...
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Given a few block matrices, get the overall large matrix
In short, we are given a 4D tensor y of shape ( B // s2, D2 // s1, s1, s2), where y[i,j,...] represents a matrix of shape (s1,s2). These are the block matrices used to construct the overall large ...
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Keep all matched rows when reshaping from long to wide
I am trying to reshape my data from long to wide format. I would like to keep all rows that match for sn3=1 and sn3=2 instead of taking only the first value. How can I achieve this?
Desired output:
...
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wide data with part of column name as value [duplicate]
I have the following data structure in R
DE_GDP DE_INFL US_GDP US_INFL
1 1 1 1 1
2 2 2 2 2
3 3 3 3 3
4 4 4 4 4
...
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calculate annual cases after reshaping dataframe in R
I am working in R and I want to calculate the last column Annual_Cases based on the available years for each surgeon. The variable Years was reported per each 3-year time interval. Some surgeons were ...
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How to append value of every two columns in R?
go from
m <- matrix(1:16, nrow = 4)
[,1] [,2] [,3] [,4]
[1,] 1 5 9 13
[2,] 2 6 10 14
[3,] 3 7 11 15
[4,] 4 8 12 16
to
1x16 matrix 1 5 2 6 3 7 4 8 9 ...
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Is there a more effective way to create new columns from row values in a Pandas DataFrame? [duplicate]
Given a dataframe with three initial columns, one of which has categorical type with two categories, the aim is to create distinct columns for each category and subsequently store within them the ...
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