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Numpy savetxt saves 1D array as column
Create ArrayList from arrayHow do I check if an array includes an object in JavaScript?How to append something to an array?PHP: Delete an element from an arrayHow to insert an item into an array at a specific index (JavaScript)?How do I empty an array in JavaScript?Loop through an array in JavaScriptHow to check if an object is an array?How do I remove a particular element from an array in JavaScript?For-each over an array in JavaScript?
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I use loadtxt to initialize array.
source = np.loadtxt('source.txt').astype(int)
After that I use this array in function, which body is:
file = open('johnson.txt', 'ab')
first = increase(np.argsort(source[0]))
np.savetxt(file, first, delimiter='-', fmt='%i')
file.close()
As a result, in txt file I should have this:
7-1-3-6-2-4-8-5
But I have this:
7
1
3
6
2
4
8
5
I have to open file in binary mode, because I need to append another rows to file. So, how can I fix that?
Thank you!
python arrays file numpy
asked Mar 22 at 16:09
D3mark0D3mark0
112
add a comment |
I use loadtxt to initialize array.
source = np.loadtxt('source.txt').astype(int)
After that I use this array in function, which body is:
file = open('johnson.txt', 'ab')
first = increase(np.argsort(source[0]))
np.savetxt(file, first, delimiter='-', fmt='%i')
file.close()
As a result, in txt file I should have this:
7-1-3-6-2-4-8-5
But I have this:
7
1
3
6
2
4
8
5
I have to open file in binary mode, because I need to append another rows to file. So, how can I fix that?
Thank you!
python arrays file numpy
asked Mar 22 at 16:09
D3mark0D3mark0
112
Trynp.savetxt(file, np.atleast_2d(first), delimiter='-', fmt='%i')ornp.savetxt(file, first.reshape(-1, 1), delimiter='-', fmt='%i')
– Warren Weckesser
Mar 22 at 16:24
np.atleast_2d(first)is working perfect! Thank you!
– D3mark0
Mar 22 at 16:32
add a comment |
I use loadtxt to initialize array.
source = np.loadtxt('source.txt').astype(int)
After that I use this array in function, which body is:
file = open('johnson.txt', 'ab')
first = increase(np.argsort(source[0]))
np.savetxt(file, first, delimiter='-', fmt='%i')
file.close()
As a result, in txt file I should have this:
7-1-3-6-2-4-8-5
But I have this:
7
1
3
6
2
4
8
5
I have to open file in binary mode, because I need to append another rows to file. So, how can I fix that?
Thank you!
python arrays file numpy
asked Mar 22 at 16:09
D3mark0D3mark0
112
I use loadtxt to initialize array.
source = np.loadtxt('source.txt').astype(int)
After that I use this array in function, which body is:
file = open('johnson.txt', 'ab')
first = increase(np.argsort(source[0]))
np.savetxt(file, first, delimiter='-', fmt='%i')
file.close()
As a result, in txt file I should have this:
7-1-3-6-2-4-8-5
But I have this:
7
1
3
6
2
4
8
5
I have to open file in binary mode, because I need to append another rows to file. So, how can I fix that?
Thank you!
python arrays file numpy
python arrays file numpy
asked Mar 22 at 16:09
D3mark0D3mark0
112
asked Mar 22 at 16:09
D3mark0D3mark0
112
asked Mar 22 at 16:09
D3mark0D3mark0
112
asked Mar 22 at 16:09
D3mark0D3mark0
112
asked Mar 22 at 16:09
D3mark0D3mark0
112
112
Trynp.savetxt(file, np.atleast_2d(first), delimiter='-', fmt='%i')ornp.savetxt(file, first.reshape(-1, 1), delimiter='-', fmt='%i')
– Warren Weckesser
Mar 22 at 16:24
np.atleast_2d(first)is working perfect! Thank you!
– D3mark0
Mar 22 at 16:32
add a comment |
Trynp.savetxt(file, np.atleast_2d(first), delimiter='-', fmt='%i')ornp.savetxt(file, first.reshape(-1, 1), delimiter='-', fmt='%i')
– Warren Weckesser
Mar 22 at 16:24
np.atleast_2d(first)is working perfect! Thank you!
– D3mark0
Mar 22 at 16:32
Try
np.savetxt(file, np.atleast_2d(first), delimiter='-', fmt='%i') or np.savetxt(file, first.reshape(-1, 1), delimiter='-', fmt='%i')– Warren Weckesser
Mar 22 at 16:24
Try
np.savetxt(file, np.atleast_2d(first), delimiter='-', fmt='%i') or np.savetxt(file, first.reshape(-1, 1), delimiter='-', fmt='%i')– Warren Weckesser
Mar 22 at 16:24
np.atleast_2d(first) is working perfect! Thank you!– D3mark0
Mar 22 at 16:32
np.atleast_2d(first) is working perfect! Thank you!– D3mark0
Mar 22 at 16:32
add a comment |
1 Answer
1
active
oldest
votes
savetxt iterates on the input array, and writes each 'row' to a new line. For the typical 2d array that would be a row. But for a 1d array that would be an element.
So change your write to saving a 2d array:
np.savetxt('test.txt', [first], delimiter=..., fmt=...)
Assuming first is a 1d array, then np.array([first]) is 1 row 2d, first[None,:] would also work (or a reshape).
To append lines, open the file in 'a' append mode. 'wb'` binary doesn't help.
answered Mar 22 at 16:30
hpauljhpaulj
119k788162
Perfect answer, thank you! It became much clearer for me.
– D3mark0
Mar 22 at 16:37
add a comment |
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1 Answer
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votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
savetxt iterates on the input array, and writes each 'row' to a new line. For the typical 2d array that would be a row. But for a 1d array that would be an element.
So change your write to saving a 2d array:
np.savetxt('test.txt', [first], delimiter=..., fmt=...)
Assuming first is a 1d array, then np.array([first]) is 1 row 2d, first[None,:] would also work (or a reshape).
To append lines, open the file in 'a' append mode. 'wb'` binary doesn't help.
answered Mar 22 at 16:30
hpauljhpaulj
119k788162
Perfect answer, thank you! It became much clearer for me.
– D3mark0
Mar 22 at 16:37
add a comment |
savetxt iterates on the input array, and writes each 'row' to a new line. For the typical 2d array that would be a row. But for a 1d array that would be an element.
So change your write to saving a 2d array:
np.savetxt('test.txt', [first], delimiter=..., fmt=...)
Assuming first is a 1d array, then np.array([first]) is 1 row 2d, first[None,:] would also work (or a reshape).
To append lines, open the file in 'a' append mode. 'wb'` binary doesn't help.
answered Mar 22 at 16:30
hpauljhpaulj
119k788162
Perfect answer, thank you! It became much clearer for me.
– D3mark0
Mar 22 at 16:37
add a comment |
savetxt iterates on the input array, and writes each 'row' to a new line. For the typical 2d array that would be a row. But for a 1d array that would be an element.
So change your write to saving a 2d array:
np.savetxt('test.txt', [first], delimiter=..., fmt=...)
Assuming first is a 1d array, then np.array([first]) is 1 row 2d, first[None,:] would also work (or a reshape).
To append lines, open the file in 'a' append mode. 'wb'` binary doesn't help.
answered Mar 22 at 16:30
hpauljhpaulj
119k788162
savetxt iterates on the input array, and writes each 'row' to a new line. For the typical 2d array that would be a row. But for a 1d array that would be an element.
So change your write to saving a 2d array:
np.savetxt('test.txt', [first], delimiter=..., fmt=...)
Assuming first is a 1d array, then np.array([first]) is 1 row 2d, first[None,:] would also work (or a reshape).
To append lines, open the file in 'a' append mode. 'wb'` binary doesn't help.
answered Mar 22 at 16:30
hpauljhpaulj
119k788162
answered Mar 22 at 16:30
hpauljhpaulj
119k788162
answered Mar 22 at 16:30
hpauljhpaulj
119k788162
answered Mar 22 at 16:30
hpauljhpaulj
119k788162
119k788162
Perfect answer, thank you! It became much clearer for me.
– D3mark0
Mar 22 at 16:37
add a comment |
Perfect answer, thank you! It became much clearer for me.
– D3mark0
Mar 22 at 16:37
Perfect answer, thank you! It became much clearer for me.
– D3mark0
Mar 22 at 16:37
Perfect answer, thank you! It became much clearer for me.
– D3mark0
Mar 22 at 16:37
add a comment |
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Try
np.savetxt(file, np.atleast_2d(first), delimiter='-', fmt='%i')ornp.savetxt(file, first.reshape(-1, 1), delimiter='-', fmt='%i')– Warren Weckesser
Mar 22 at 16:24
np.atleast_2d(first)is working perfect! Thank you!– D3mark0
Mar 22 at 16:32