column | memory store with bitmap | Performance Testing library

by kelindar Go Version: v0.3.0 License: MIT

X-Ray Key Features Code Snippets(3)Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | column Summary

column is a Go library typically used in Testing, Performance Testing applications. column has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

This package contains a high-performance, columnar, in-memory storage engine that supports fast querying, update and iteration with zero-allocations and bitmap indexing.

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Security

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Support

column has a medium active ecosystem.

It has 1089 star(s) with 45 fork(s). There are 22 watchers for this library.

It had no major release in the last 12 months.

There are 15 open issues and 14 have been closed. On average issues are closed in 27 days. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of column is v0.3.0

Quality

column has no bugs reported.

Security

column has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

column is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

column releases are available to install and integrate.

Installation instructions are not available. Examples and code snippets are available.

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column Key Features

No Key Features are available at this moment for column.

column Examples and Code Snippets

Return a new column with cross - validation .

python

Lines of Code : 125

License : Non-SPDX (Apache License 2.0)

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def _crossed_column(keys, hash_bucket_size, hash_key=None):
  """Returns a column for performing crosses of categorical features.

  Crossed features will be hashed according to `hash_bucket_size`. Conceptually,
  the transformation can be thought of

Embedding a categorical column .

python

Lines of Code : 122

License : Non-SPDX (Apache License 2.0)

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def _embedding_column(categorical_column,
                      dimension,
                      combiner='mean',
                      initializer=None,
                      ckpt_to_load_from=None,
                      tensor_name_in_ckpt=None,

Create a weighted sum for a column .

python

Lines of Code : 46

License : Non-SPDX (Apache License 2.0)

Copy

def _create_categorical_column_weighted_sum(
    column, transformation_cache, state_manager, sparse_combiner, weight_var):
  # pylint: disable=g-doc-return-or-yield,g-doc-args
  """Create a weighted sum of a categorical column for linear_model.

  N

Community Discussions

Trending Discussions on column

How to produce a point graph in R like this?

Format values in a data frame

Pandas: List of maximum values of difference from previous rows in new column

How to update another file if a match is found in python

TypeError: unhashable type: 'numpy.ndarray' and plt.scatter()

Return the range within an array Excel

remove duplicates , but have problems with delete column with "-"

Xarray (from grib file) to dataset

Pandas: cut date column into period date groups/bins

How to convert message.text to string and save it to database. How to download photo by telegram bot. TelegramBotAPI

QUESTION

How to produce a point graph in R like this?

Asked 2021-Jun-16 at 04:05

I have basically this very odd type of data frame:

The first column is the name of the States (say I have 3 states), the second to the last column (say I have 5 columns) contains some values recorded at different dates (not continuous). I want to create a graph that plots the values for each State on the range of the dates that starts from the earliest and end in the latest dates (continuous).

The table looks like this:

state 2020-01-01 2020-01-05 2020-01-06 2020-01-10 AZ NA 0.078 -0.06 NA AK 0.09 NA NA 0.10 MS 0.19 0.21 NA 0.38

"NA" means there is not data.

How do I produce this graph in which the x axis is from 2020-01-01 to 2020-01-10 (continuous), the y axis contains the changing values (as points) of the three States, each state occupies its separate (segmented) y-axis?

Thank you.

...

ANSWER

Answered 2021-Jun-16 at 03:41

You can get the data into a long format, which makes it easier to plot. R will make it difficult to read column names that start with a number. While reading the data, ensure that you have check.names = FALSE so that column names are read as is.

Source https://stackoverflow.com/questions/67995623

QUESTION

Format values in a data frame

Asked 2021-Jun-16 at 03:47

Replace values from a column based on the following rule: t0345_0400_d2 = 03:45, or to keep only the first part of the value in time format. How can I do this?

Data structure:

Output:

Sample data:

...

ANSWER

Answered 2021-Jun-16 at 03:47

You can use sub to extract data in two capture groups and separate them by : -

Source https://stackoverflow.com/questions/67996057

QUESTION

Pandas: List of maximum values of difference from previous rows in new column

Asked 2021-Jun-16 at 03:33

I want to add a new column 'BEST' to this dataframe, which contains a list of the names of the columns which meet these criteria:

Subtract from the current value in each column the value in the row that is 2 rows back
The column that has the highest result of this subtraction will be listed in 'BEST'
If more more than one column shares the same highest result, they all get listed
If all columns have the same result, they all get listed

Input:

...

ANSWER

Answered 2021-Jun-16 at 03:33

First use shift and subtract to get the diff, then replace the maximum values with the column name and drop the others.

Source https://stackoverflow.com/questions/67995888

QUESTION

How to update another file if a match is found in python

Asked 2021-Jun-16 at 03:13

Here is my problem. I need to compare mainfile.txt and transactionfile.txt which contains numbers without comma. I need to Update/Replace the mainfile.txt contents (4th and 5th column) with what is found as a match in the transactionfile.txt

...

ANSWER

Answered 2021-Jun-16 at 02:59

You can use .zip() method. This will not overwrite the file. If you want to overwrite the file,

Source https://stackoverflow.com/questions/67995659

QUESTION

TypeError: unhashable type: 'numpy.ndarray' and plt.scatter()

Asked 2021-Jun-16 at 02:51

I am having issues with the plt.scatter() function. The error message says 'Type Error: unhashable type: 'numpy.ndarray''I want this code to create a scatter plot of the x and y dataframes. The two dataframes are the same size (88,2) when I enter a sample unit into the code.

...

ANSWER

Answered 2021-Jun-15 at 18:02

Based on Matplotlib documentation here the inputs for plt.scatter() are:

x, yfloat or array-like, shape (n, ) The data positions.

But in your code what you're passing to the scatter function are two pd.DataFrame. So the first column are the names but the second columns are where the values stored:

Source https://stackoverflow.com/questions/67990872

QUESTION

Return the range within an array Excel

Asked 2021-Jun-16 at 02:47

I need to retrieve a range delimited by indexes from a specific array

I cannot use OFFSET because it doesnt use an array as a parameter. And the range will then be use for a secondary calculation

The example:

I want to calculate the SUM of the 4th to the 11th value in the column Numbers.

So at the end the formula should look something like: =SUM(Numbers[4:10]) = 36 4 and 10 being the desired indexes.

I tried with OFFSET and INDEX but cant figure out how to do it.

...

ANSWER

Answered 2021-Jun-16 at 02:36

Index(), INDIRECT() will work. Also OFFSET() will work but need to apply some trick. As @BigBen suggested you can use INDEX() like =SUM(INDEX(B:B,5):INDEX(B:B,11)) but I am sure you will not prefer to hard code index no. So, you can use below formula to dynamically input two index and get sum between those index. Try-

Source https://stackoverflow.com/questions/67995570

QUESTION

remove duplicates , but have problems with delete column with "-"

Asked 2021-Jun-16 at 02:46

i have this input file.. I need to remove the duplicated rows in column 13 but I have a problem with the data that contains a "-" why does it not remove them

input

...

ANSWER

Answered 2021-Jun-16 at 01:50

If your sample input is accurate, some of your column 13 contain trailing whitespace. If you want to treat them as being the same value, you can trim it.

For example, before using column 13, you could do:

Source https://stackoverflow.com/questions/67995108

QUESTION

Xarray (from grib file) to dataset

Asked 2021-Jun-16 at 02:36

I have a grib file containing monthly precipitation and temperature from 1989 to 2018 (extracted from ERA5-Land).

I need to have those data in a dataset format with 6 column : longitude, latitude, ID of the cell/point in the grib file, date, temperature and precipitation.

I first imported the file using cfgrib. Here is what contains the xdata list after importation:

...

ANSWER

Answered 2021-Jun-16 at 02:36

Here is the answer after a bit of trial and error (only putting the result for tp variable but it's similar for t2m)

Source https://stackoverflow.com/questions/67963199

QUESTION

Pandas: cut date column into period date groups/bins

Asked 2021-Jun-16 at 02:26

I have a dataframe as below:

...

ANSWER

Answered 2021-Jun-16 at 02:26

Convert your dates with to_datetime then subtract from today's normalized date (so that we remove the time part) and get the number of days. Then use pd.cut to group them appropriately.

Anything in the future gets labeled with NaN.

Source https://stackoverflow.com/questions/67995517

QUESTION

How to convert message.text to string and save it to database. How to download photo by telegram bot. TelegramBotAPI

Asked 2021-Jun-16 at 01:16

I want save photo and add name of file and text of message to database.(Also in this database I have status of request and user, how make request, this 2 columns works ok)

Database:

...

ANSWER

Answered 2021-Jun-15 at 11:53

You are writing message.text into the database inside the photo function. However, that function is only triggered for messages containing a photo. When the message contains a photo, message.text is None. Any caption the photo might have will be in message.caption.

Source https://stackoverflow.com/questions/67984671

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install column

You can download it from GitHub.

Support

The general idea is to leverage cache-friendly ways of organizing data in structures of arrays (SoA) otherwise known "columnar" storage in database design. This, in turn allows us to iterate and filter over columns very efficiently. On top of that, this package also adds bitmap indexing to the columnar storage, allowing to build filter queries using binary and, and not, or and xor (see kelindar/bitmap with SIMD support).

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