Numpy function to create arrays from tabular data.
Questions tagged [genfromtxt]
287 questions
0
votes
0 answers
How do I read the second column using genfromtxt?
Consider the following data file:
! cat datax
1
1.000
2.000 3.000
3.000 4.000
5.000 6.000
the lines:
f=open('datax', 'r')
d=np.genfromtxt(f, dtype=None, missing_values=0,usecols=(0))
f.close()
succeed but the lines:
f=open('datax', 'r')…
wander95
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0
votes
1 answer
numpy.genfromtxt path value
I would like to load a txt file with genformtxt(). the txt file is already in c:.
stock=np.genfromtxt('c:\09012017.txt',delimiter=' ',dtype=str,skip_header=1)
C:\Anaconda3\lib\site-packages\numpy\lib\npyio.py in genfromtxt(fname, dtype, comments,…
LB10222
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- 3
0
votes
1 answer
Error in reading CSV through command line as Numpy 2d Matrix
I am trying to read data in CSV file as numpy matrix using csv.reader() function to store it into Numpy 2d matrix using the following code:
import sys
import csv
filename1 = sys.argv[0]
reader = csv.reader(open(filename1, "rb"), delimiter=",")
x =…
Ashutosh Mishra
- 65
- 1
- 9
0
votes
0 answers
genfromtxt issues of import a txt file
I have a data file with top names like:
position avgx avgy avgz stdx stdy stdt avgG nemixrms nemiyrms nemirrms rmax
2.800e+00 -4.997e-05 -1.373e-04 2.800e+00 2.812e-03 …
rfeynman
- 97
- 1
- 9
0
votes
1 answer
Read textfile into numpy array
I'm trying to load a textfile into a numpy array.
The structure is the following:
THE 77534223
AND 30997177
ING 30679488
ENT 17902107
ION 17769261
HER 15277018
FOR 14686159
THA 14222073
NTH 14115952
[...]
But I fail using
import numpy as np
data =…
Suuuehgi
- 4,547
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- 27
- 32
0
votes
1 answer
ValueError: size of tuple must match number of fields while using genfromtxt
import os
import numpy as np
os.getcwd()
os.chdir('C:/Users/Gururaj/Desktop/tech/python/')
data = np.genfromtxt("simple.txt", dtype=None, delimiter=",",
names=str(False))
print(data[0])
=========================error as…
Gururaj Naik
- 3
- 6
0
votes
1 answer
How do I specify dtype str correctly?
File is utility.dat
Name D L J H E M RF AF
line1 150 4.5 2.0 150 2 Copper 0.8 true
line2 140 4.5 2.0 140 2 Aluminium 0.8 true
My script is script.py
import numpy
configName = "utility.dat"
lines =…
Dean
- 65
- 1
- 8
0
votes
2 answers
IOError when loading data file to plot
import matplotlib.pyplot as plt
import numpy as np
x,y = np.genfromtxt('D:\Tanjil\Python\directory\Heat Available Datas.csv',unpack=True , delimiter=',',skip_header=0)
plt.plot(x,y,'ro--'),
plt.ylabel('Power Input…
Badrul Hasan Tanjil
- 35
- 7
0
votes
4 answers
Import data into Python from txt file
I have a .txt file with data arranged as follows:
3430 4735 1
3430 4736 1
3430 4941 2
3430 5072 1
3430 5095 1
3430 5230 1
3430 5299 1
3430 5386 1
3430 5552 1
3430 5555 1
3430 5808 1
3430 5853 1
3430 5896 1
3430 5988 1
3430 6190 4
3430 6191 1
3430…
user8321044
- 3
- 1
- 1
- 3
0
votes
1 answer
How do I convert a CSV file to an RGB image using python
I'm trying to convert a csv file to an RGB file as follows:
from PIL import Image, ImageDraw
from numpy import genfromtxt
g = open('myFile.csv','r')
temp = genfromtxt(g, delimiter = ',')
im = Image.fromarray(temp).convert('RGB')
pix =…
cookieMonster
- 75
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- 9
0
votes
1 answer
Issues importing datasets (txt file) with Python using numpy library genfromtxt function
I am trying to learn Python, however I am trying to import a dataset and cant get it work correctly...
This dataset contains 16 columns and 16 320 rows saved as txt file. I used the genfromtxt function as follow :
import numpy as np …
user6473579
0
votes
1 answer
genfromtxt in Python-3.5
I am trying to fix a data set using genfromtxt in Python 3.5. But I keep getting the next error:
ndtype = np.dtype(dict(formats=ndtype, names=names))
TypeError: data type not understood
This is the code I'm using. Any help will be…
nanny
- 57
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0
votes
0 answers
Make numpy.genfromtext return comma separated tuples
I am using
text = np.sort(np.genfromtxt('new1', delimiter= ' ',dtype=None,usecols=[1,2]))
and while printing text, the result I get is space separated values.
[(10014024, 'GAM.SW') (10014031, 'GAM.SW') (10014032, 'GAM.SW')
(10014032, 'HAM.SW')…
0
votes
1 answer
CSV via NumPy genfromtxt(): dtype for variable string sizes
I'm reading in a CSV using genfromtxt(), and I want all of my values to be strings. I need to specify a string dtype but specifying S results in empty strings:
In [83]: s = StringIO("a,b,c\n1,1.3,abcde\n2,4,hihihi")
In [84]: data = np.genfromtxt(s,…
Loisaida Sam Sandberg
- 523
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- 15
0
votes
1 answer
Convert genfromtxt array to regular numpy array
I can't post the data being imported, because it's too much. But, it has both number and string fields and is 5543 rows and 137 columns. I import data with this code (ndnames and ndtypes holds the column names and column datatypes):
npArray2 =…
swabygw
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