151 questions
0
votes
1
answer
93
views
Zero padding a number in dynamic file name with dynamic expression
I am building a pipeline in Azure Data Factory.
The file name must be build with Hive Partitioning in the format year=YYYY/month=mm/day=DD.
For month= I need to pad the month number to 2 digits.
...
- 3,000
-1
votes
1
answer
66
views
How do I use python to zero pad an integer substring (not a whole string) within another string?
Say I have strings like (outputted from running glob.glob() on output from someone else's code):
image-0.png
image-1.png
image-2.png
image-3.png
image-4.png
image-5.png
image-6.png
image-7.png
image-8....
- 8,535
1
vote
4
answers
103
views
Zero-pad numbers within a string
Original question: Sorting non-padded lines
Given a non-zero-padded mixed string, how to zero-pad it up to the number of digits of the longest number?
Example input:
S70E1
S75E10
S41E100
S53E11
...
- 179
0
votes
0
answers
423
views
Perfect interpolation (sinc) of Fourier spectrum equivalent to zero-padding time domain
I need to up-sample a 2D Fourier spectrum, this can be done by zero padding the image before the FFT. But in my particular case I cannot perform an FFT or IFFT, the interpolation must be performed in ...
- 1
0
votes
0
answers
52
views
Padding zeros to ensure uniform length
I am trying to append an array of zeros with shape (6,) to list containing array of same length but instead of appending array of zeros , integer zero is appended.
def padded_list(data,column):
&...
0
votes
1
answer
830
views
Pytorch: Adding a dimension to a tensor through padding
I have given different tensors where some have only 2 dimensions and some 3 dimensions. The first 2 dimensions are always matching.
I want them all to be of the same shape for further processing. ...
5
votes
10
answers
364
views
Prepend leading zeros to each line of a file
I have a file that looks like this:
1:line1
14:line2
135:line3
15:line4
I need to prepend leading zeros to each line to make it look like this:
00001:line1
00014:line2
00135:line3
00015:line4
Is ...
1
vote
2
answers
58
views
Need to pad numbers inside a semicolon separated vector in r
I have the following dataframe, and I need to manipulate column a to get to column a_clean:
df=data.frame(a=c("1234-12;23456-123","12345-1234",NA,"1234-013;1234-014"),...
- 107
3
votes
1
answer
10k
views
How to zero pad an f-string? [duplicate]
Like this is how you can 0 pad a format string
for i in range(10):
zeropad = "Value is{:03}.".format(i)
print(zeropad)
and you get result as
Value is 000
Value is 001
and so on...
So,...
1
vote
0
answers
770
views
Questions about masks of padding in GPT
The GPT series models use the decoder of Transformer, with unidirectional attention. In the source code of GPT in Hugging Face, there is the implementation of masked attention:
self.register_buffer(
...
- 21
2
votes
1
answer
403
views
Julia equivalent of pad_width in np.pad
Numpy has a padding function with a pad_width parameter that does the following:
pad_width: Number of values padded to the edges of each axis. ((before_1, after_1), ... (before_N, after_N)) unique ...
- 943
0
votes
1
answer
234
views
Roll and pad in Numpy
Is there a built-in Numpy function to shift (roll + pad) an 1D array?
Something like this:
import numpy as np
def roll_pad(a, t):
b = np.roll(a, t)
if t >= 0:
b[:t] = 0
else:
...
- 47.5k
0
votes
1
answer
118
views
How to check if all values in the list are the same length? And if not how to add extra digits to equalise those values?
I'm doing a little coding in Python, and I came up to the issue that some of my values and not the same length.
Desired length is 15 characters
for example:
string = ['110000111100111', '...
0
votes
1
answer
109
views
Keras ZeroPadding
All I have a input layer and I am trying to do zero padding to make it a specific dimension of TensorShape([1, 1, 104, 24])
import tensorflow as tf
import dumpy as np
input_shape = (1, 1, 1, 24)
x = ...
- 291
0
votes
1
answer
172
views
Why does padding add zeros to left, but left align adds zeros to right when performing bit manipulation?
I am not sure if this is a general bit manipulation related question or something specific to Ethereum. But I am reading a part of the ethereum specification here and I am confused by the bit related ...
- 4,293
0
votes
1
answer
450
views
How can I create a variable in size of specific number of bytes in lua?
How can I create a variable that will contain for example 24 bytes of zeros in lua?
I thought about something like: local zeros = "0X0000..00" (with 24 zeros).
And in addition, how can I ...
- 97
0
votes
1
answer
260
views
Forming a frame of zeros around a matrix in python
I am trying to pad a matrix with zeros, but am not really sure how to do it. Basically I need to surround a matrix with an n amount of zeros. The input matrix is huge (it represents an image)
Example:
...
- 33
2
votes
2
answers
2k
views
Appending zero rows to a 2D Tensor in PyTorch
Suppose I have a tensor 2D tensor x of shape (n,m). How can I extend the first dimension of the tensor by appending zero rows in x by specifying the indices of where the zero rows will be located in ...
- 123
0
votes
0
answers
13
views
Padding zero with minimum SQL
SQL statement to achieve following logic with minimum length 5
For example:
2.34 to be 2.340
0.158787 to be 0.158787 and
.2 to be 0.200 and
5 to be 00005
2093 to be 02093 and 78934 to be 78934
Tried ...
- 1
0
votes
1
answer
44
views
debugging and improvement of the python code
I have the following code and when I execute the code nothing happens. I wonder why no error occurs.
# weights_dict = dictionary with multiple tensors (matrices) als values
for i in range(0, len(...
- 1
-1
votes
1
answer
593
views
Python- Zero padding a time series
I have some time series that I want to give as input for the autoencoder. They have different lengths and I want to zero padding them to have the same length. What is the best way in python?
I am ...
- 49
0
votes
1
answer
65
views
How to retain leading 0's when converting xml to csv
I have this code, in the XML page the DateTime is 01052022000000000, but when it comes to python it appears like 1052022000000000 (the left zero was deleted).
I try to use ( apply('{:0>17}'.format) ...
0
votes
2
answers
326
views
Pad float with zeros according to maximum length in list
I have a list:
ls = [1.0, 2.11, 3.981329, -15.11]
I want to add zeros to decimal places of each element so that all values have the same length as the value that has maximum length. So the output ...
- 324
0
votes
1
answer
2k
views
Left zero padded format numbers
I want to format 4-digit numbers with left padded zeros and 5-digit numbers with no leading zeros so when e.g:
I insert 124 it is formatted to 0124.
30 is formatted to 0030.
When number >9999 then ...
- 5
0
votes
2
answers
137
views
How can I pad a series of hyphen-separated numbers each to two digits?
I am fairly new to PowerShell programming, so need help with set of strings I have as described below:
"14-2-1-1"
"14-2-1-1-1"
"14-2-1-1-10"
I want to pad zero to each ...
- 3
1
vote
3
answers
2k
views
How to make `bc` output a desired number of base-2 binary digits
This outputs 101110
echo "obase=2; 46" | bc
How can I make it output 8 digits, like this? : 00101110
I learned the above usage of bc here: Bash shell Decimal to Binary base 2 conversion
See ...
- 56.1k
2
votes
2
answers
678
views
Writting zeros in file segment
I'm using fwrite to write a file (it's an image).
First, I'm writing a header that has a fixed size
int num_meta_write_bytes = fwrite(headerBuffer, 1, headerSize, file);
This works OK
Then I have to ...
- 1,551
2
votes
0
answers
117
views
Visual Studio 2019 generate executable filesize always multiple of 512 bytes
I was wondering if there is a technical explanation of Visual Studio executables file size is always a multiple of 512 bytes. In order to reach the wanted size, Visual Studio adds zero padding to the ...
- 4,755
0
votes
1
answer
530
views
RNN with inconsistent (repeated) padding (using Pytorch's Pack_padded_sequence)
Following the example from PyTorch docs I am trying to solve a problem where the padding is inconsistent rather than at the end of the tensor for each batch (in other words, no pun intended, I have a ...
- 585
0
votes
1
answer
1k
views
How to rename and pad directories with leading zeros [duplicate]
I'm looking for a way to batch rename multiple folders. Basically, I need to pad it with leading zeros and make it a 6-digit
Example:
123 ---> 000123
22 ----> 000022
5678 --> 005678
The only ...
- 13
1
vote
3
answers
2k
views
left padding with python
I have following data and link combination of 100000 entries
dn:id=2150fccc-beb8-42f8-b201-182a6bf5ddfe,ou=test,dc=com
link:545214569
dn:id=ffa55959-457d-49e6-b4cf-a34eff8bbfb7,ou=test,dc=com
link:...
- 11
0
votes
1
answer
529
views
CUDA Zeropadding 3D matrix
I have a integer matrix of size 100x200x800 which is stored on the host in a flat 100*200*800 vector, i.e., I have
int* h_data = (int*)malloc(sizeof(int)*100*200*800);
On the device (GPU), I want to ...
- 317
0
votes
3
answers
685
views
Padding zeroes to columns with NaN values
I have a pandas dataframe where three columns are floats (floats64):
Num1 Num2 Num3
0 2345656 3.0 12345.0
1 3456 3.0 3100.0
2 541304 ...
- 57
0
votes
4
answers
1k
views
Zero padding a 2D array in C#
I currently have an issue with zero padding my 2d Array. I want to transfer my current data in my array to a new array, which is the exact same array but with a border of 0's around it.
Example:
|1 2 ...
user15916724
1
vote
4
answers
2k
views
What is the regex to match everything after leading zeros
I want to know how to match a string after zeros at the beginning of a string.
so example cases of what the string should match are
ABC0123 -> ABC0123
0ABC0123 -> ABC0123
000ABC0123 -> ...
- 53
1
vote
3
answers
2k
views
How do I best add 0's to beginning of range.value until it is 13 characters long in Excel? [duplicate]
I'm writing a function which needs to look up a code of a certain length in a different range, but not all codes are the correct length. In this range, that is fixed by having extra zeroes in front of ...
- 57
1
vote
1
answer
1k
views
In tensorflow, Do I have to set something special to ignore zero padding value when training? Or is it automatic?
I want to train sequence data to Rnn base model with some zero paddings using tensorflow.
And I want model to ignore 0 values when training.
Do I have to set parameters to do that? or Does model ...
- 125
1
vote
1
answer
148
views
SQLite3 - Calculated SELECT with padding and concatenation
I have the following SQLite table (a stub of the real table which has a few other columns)
CREATE TABLE IF NOT EXISTS fingers(id INTEGER,intLL INTEGER,fracLat INTEGER,fracLng INTEGER,PRIMARY KEY(id)) ...
- 9,018
2
votes
1
answer
3k
views
How to pad zeros on Batch, PyTorch
Is there a better way to do this? How to pad tensor with zeros, without creating new tensor object? I need inputs to be of the same batchsize all the time, so I want to pad inputs that are smaller ...
- 1,155
0
votes
1
answer
46
views
Fastest solution for general padded addition in numpy
I need to add 2 dim arrays of variable sizes to each other. There are many methods to do this!
Typical sizes are a few thousand by a few hundred (as this may impact scaling!). Need to carry out ...
- 3
0
votes
2
answers
2k
views
About zero-padding for the FFT in the Matlab
I have a question about the zero-padding for the fft. I ran fft with zero-padding & without zero-padding and compared.
sf = 100; %sampling frequency
dt=1/sf; %time sampling interval
L = 10; %...
- 35
0
votes
1
answer
541
views
batch file padding zero
I am having a list of id number like the following:
123
4456
657
23
199
i would like to add padding zero to it so that it will end up with 5 digit with result like this:
00123
04456
00657
00023
00199
...
- 1
1
vote
0
answers
93
views
Fast Fourier Transform(FFT) - problem with fourier resolution
I have been working quite a bit with fourier transforms in python the last couple of days.
I have discovered that in order to accurately capture known periods of incoming data, the resolution or ...
2
votes
3
answers
756
views
Unexpected behavior of python datetime strptime with zero-padded formats
I have list of strings representing datetimes in different formats. I.e.:
list_date_str = ['2021010112', '202101011210']
The first should translate to 2021-01-01 12:00, the second to 2021-01-01 12:10....
- 1,108
2
votes
1
answer
2k
views
PHP encrypted data needs to be decrypted in ReactNative
I am using following snippet to do AES encryption for CBC 256 mode in PHP.
$iv_real = "ahc/2u6F0Yvww12fyQiZWA==";
$decoded_iv = base64_decode($iv_real);
$plaintext_shared_secret = "...
- 179
1
vote
0
answers
3k
views
Python Fourier zero padding
Problem
I have a spectrum that can be download here: https://www.dropbox.com/s/ax1b32aotuzx9f1/example_spectrum.npy?dl=0
Using Python, I am trying to use zero padding to increase the number of points ...
- 65
6
votes
6
answers
5k
views
How to pad numbers with JQ?
I'd like to add leading/trailing zeros to strings from numbers — resultant string needs to contain "01" or "001" and not "1". I noticed project https://github.com/...
- 3,267
1
vote
1
answer
341
views
Moving Filter/Mask Across Given Image (No Function)
I am struggling attempting to create a program that pads an image and filter/mask. Where I am having trouble is actually attempting to move this filter over each bit of the image without using a ...
-1
votes
1
answer
277
views
Rotating image with trigonometric functions and image padding
While rotating image with trigonometric function we are using image padding.
If we rotate without padding we have this picture:
If we pad the picture,
For instance with these codes:
`...
-4
votes
1
answer
808
views
Python: How do add variable length leading zeros to a binary string? [duplicate]
I am looking to add leading zeros to my_string = '01001010' to ensure that a minimum of 'length' bits string, where length >= len(my_string)
- 374