Questions tagged [reshape]
In R, Matlab, NumPy and APL, reshape functions allow data to be transformed into more convenient forms.
reshape
3,904
questions
0
votes
0
answers
15
views
Unexpected coordinate switching when reshaping object positions into 3D grid after flattening and integrating
I am working on processing and analyzing velocity field data from VTI files using Python. The workflow includes reading VTI files, extracting velocity data, computing object trajectories, generating ...
- 107k
-3
votes
0
answers
39
views
cannot reshape array of size 1000 into shape (100,100) [closed]
>>> cent_rand = np.random.randint(1919, 3946, 1000)
>>> len(cent_rand)
1000
>>> two_d_cent = cent_rand.reshape((100,100))
Traceback (most recent call last):
File "<...
- 14.2k
0
votes
0
answers
14
views
Why reshape is needed for Sequential models after minmaxscaler class? and how to use?
My recent project is based on 'Stock Prediciton" I'm working on df["Open"] as nd.array.
Trying to understand intuitively how this works and whether my predicted data will be correct or ...
1
vote
1
answer
379
views
LSTM Autoencoder set-up for multiple features using Pytorch
I am building an LSTM autoencoder to denoise signals and will take more than 1 feature as it's input.
I have setup the model Encoder part as follows which works for single feature inputs (i.e. ...
0
votes
2
answers
33
views
merge multiple DFs based on column names and row names in R [duplicate]
I have 3 Dfs
I need to split it based on columns and row names like shown below
I tried merge_recurse option from reshape, looks like it merges row by row. Please help me to get the columns added side ...
- 4,767
1
vote
3
answers
58
views
Equivalence between reshape, strides and transpose? (numpy)
i am sorry for the very naive question.
I have these lines of numpy code, with a transpose at the beginning, and strides and reshape are used afterward.
I wonder if by re-ordering indices in reshape ...
- 1,824
0
votes
1
answer
68
views
reshape problem in LogisticRegression code
I try to make a LogisticRegression.
import pandas
import matplotlib.pyplot as plt
from sklearn.linear_model import LogisticRegression
import numpy as np
df = pd.read_csv("tested.csv")
df....
- 484
1
vote
1
answer
29
views
R issue with reshape, reshape is not ordering columns correctly
I am trying to use reshape function in R to arrange my data timepoints in a table. The variable that I am using to split it is numerical, but when reshape arranges the table it incorrectly puts 2,0.5,...
- 2,691
2
votes
1
answer
24
views
How to subset a melt object
My issue
I have melt object from reshape2 library.
I would like to subset variables with value==1.
However, when I select value from subset melt object, I get the id instead of variable.
How to get a ...
- 55.3k
1
vote
1
answer
56
views
Reshape Pandas Dataframe and group by 2 level columns
I have a dataframe with flat structure of having unique Rows as follow.
I need to reshape it as shown below.
Using Pivot table and swapping levels, I managed to obtain somewhat closer to the result, ...
- 11.6k
383
votes
15
answers
493k
views
How to reshape data from long to wide format
I'm having trouble rearranging the following data frame:
set.seed(45)
dat1 <- data.frame(
name = rep(c("firstName", "secondName"), each=4),
numbers = rep(1:4, 2),
value = rnorm(8)
)...
- 386k
3
votes
2
answers
1k
views
Unstack to top column level
I have the following dataframe:
df = pd.DataFrame({'Col1':[10,20,30,40,50], 'Col2':[60,70,80,90,100]}, index=pd.MultiIndex.from_arrays([['A','A','A','B','B'], [1,2,3,4,5]]))
I would like to obtain ...
- 2,908
0
votes
1
answer
21
views
Troubleshooting onnxruntime inference - X num_dims does not match W num_dims
Using the nnhash.py script found here: https://github.com/AsuharietYgvar/AppleNeuralHash2ONNX
# Copyright 2021 Asuhariet Ygvar
#
# Licensed under the Apache License, Version 2.0 (the "License&...
- 2,005
0
votes
1
answer
46
views
this code show an reshape error. how fix this?
I'm new in python and ML. I wrote this code for practicing. It displays this error. how do I solve this reshape problem?
import pandas as pd
import sklearn as skl
data=pd.read_csv('housing.csv')
...
- 246k
2
votes
3
answers
2k
views
Getting a tuple in a Dafaframe into multiple rows
I have a Dataframe, which has two columns (Customer, Transactions).
The Transactions column is a tuple of all the transaction id's of that customer.
Customer Transactions
1 (a,b,c)
2 (...
- 81