blm | simple model to describe the backlash effect | Animation library
kandi X-RAY | blm Summary
kandi X-RAY | blm Summary
A simple model to describe the backlash effect in physics simulations based on numpy. The model implemented in this package was published as: J. Vörös, "Modeling and identification of systems with backlash", Automatica, 2008, link to pdf.
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- Reset the model .
- Fit the feature matrix .
- Updates the data based on the linear interpolation .
- Initialize the model .
- Resets LBM model values .
- Linear down to the sinogram
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Trending Discussions on blm
QUESTION
I am trying to append data from the list json_response
containing Twitter data to a CSV file using the function append_to_csv
.
I understand the structure of the json_response
. It contains data on users who follow two politicians; 5 and 13 users respectively. 1) author_id
, created_at
, tweet_id
and text
is in data
. 2) description
/bio
is in ['includes']['users']
. 3) url
/image_url
is in ['includes']['media']
. However my nested loop does not append any data to sample_data.csv? and it throws no error. Does it have something to do with my identation?
ANSWER
Answered 2022-Jan-10 at 21:24Looks like the else branch of if 'description' in dic:
is never executed. If your code is indented correctly, then also the csvWriter.writerow
part is never executed because of this.
That yields that no contents are written to your file.
A comment on code style:
- use
with open(file) as file_variable:
instead of manually using open and close. That can save you some trouble, e.g. the trouble you would get when the else branch would indeed be executed and the file would be closed multiple times :)
QUESTION
I am trying to extract an element from a list and append it to a CSV file.
json_response
is a list containing data on Twitter users who follow two politicians. For the first politician there are 5 tweets/users and for the second politician 13 tweets/users as can be seen from the structure of json_response
. I want to extract the description
for each user which is contained in ['includes']['users']
. However, my function only extracts the last description
5/5 user and 13/13 user for each politician.
My knowledge regarding JSON-like objects is limited.
...ANSWER
Answered 2022-Jan-10 at 16:56I believe the problem relies in the append_to_csv
function because of a wrong indentation.
Look at your code:
QUESTION
I am looking for help because I have trouble to get this thing done :
...ANSWER
Answered 2021-Nov-12 at 19:09Ansible modules are generally designed to be idempotent. Instead of doing extra checks to see if the filesystem already exists, you should use declarative tasks and the filesystem
and mount
modules will do the right thing.
QUESTION
Here is my dataset 'new.csv'. Also I post a glance overview here:
https://drive.google.com/file/d/17xbwgp9siPuWsPBN5rUL9VSYwl7eU0ca/view?usp=sharing
...ANSWER
Answered 2021-Jun-28 at 21:06Could you check if this fits your needs (I'm assuming your base dataframe is named new
):
QUESTION
Problem
I have a large JSON file (~700.000 lines, 1.2GB filesize) containing twitter data that I need to preprocess for data and network analysis. During the data collection an error happend: Instead of using " as a seperator ' was used. As this does not conform with the JSON standard, the file can not be processed by R or Python.
Information about the dataset: Every about 500 lines start with meta info + meta information for the users, etc. then there are the tweets in json (order of fields not stable) starting with a space, one tweet per line.
This is what I tried so far:
- A simple
data.replace('\'', '\"')
is not possible, as the "text" fields contain tweets which may contain ' or " themselves. - Using regex, I was able to catch some of the instances, but it does not catch everything:
re.compile(r'"[^"]*"(*SKIP)(*FAIL)|\'')
- Using
literal.eval(data)
from theast
package also throws an error.
As the order of the fields and the legth for each field is not stable I am stuck on how to reformat that file in order to conform to JSON.
Normal sample line of the data (for this options one and two would work, but note that the tweets are also in non-english languages, which use " or ' in their tweets):
...ANSWER
Answered 2021-Jun-07 at 13:57if the '
that are causing the problem are only in the tweets and desciption
you could try that
QUESTION
I am working with Parse Server and am trying to speed up queries that use a bloom filter.
Each document has a field bf
with number value in range 0...bloomSize, for example document Id "xyz" is hashed as bf = 6462
The query then loads binary bloom filter values that are encoded and saved in base64 string. To make use of indexed query in Parse Server / MongoDB I need to generate an array of integers that I can compare then with the above mentioned field. So the base64 string needs to be decoded and for each 0 in binary data I have to append an integer of that 0 value position. Currently I am using following snippet:
...ANSWER
Answered 2021-Apr-17 at 06:53It should improve a bit when you avoid the conversion to string with .toString(2)
. Also the repeated i*8+l
can be avoided by using a separate counter variable:
QUESTION
I am working with string as below:
...ANSWER
Answered 2020-Nov-18 at 10:19If it's always between the last X
and last G
, you could use a couple of CHARINDEX
's as you have tried. I prefer to do this in the FROM
and use APPLY
to avoid repetition of code and a "nasty" long single expression:
QUESTION
I'm trying to unit test a model but I keep getting "Donation matching query does not exist," with the traceback pointing to the first line in the test_charity function. I tried getting the object with charity='aclu'
instead of by ID, but that did not fix it.
ANSWER
Answered 2020-Oct-25 at 19:44You setUp data with setUp
. Furthermore you should save the primary key, and use this since a database can use any primary key. Depending on the database backend, and the order of the test cases, it thus can create an object with a different primary key:
QUESTION
I started to learn Flask for a mini-project about a month. I wanted to do an app that calculates body parameters as BMI or LBM. The thing is that when I request the data in the forms, it come as tuples, so it can't be used by the body_calculator module, and throws the error in the title. My questions are: why data come as tuple, and which is the correct way to request data in Flask in this situations?
Flask code
...ANSWER
Answered 2020-Oct-06 at 16:51These few lines look like the problem:
QUESTION
I have a Google cloud Postgres server set up, and under the production environment I am able to connect to the server correctly. However, when I try to connect to the same cloud server in my local server, it doesn't seem to work. Here's the configuration for my database.js
...ANSWER
Answered 2020-Aug-16 at 04:39This shouldn’t be a strapi issue. First you need to have an access from outside to google cloud postgres database. I’m not familiar with google cloud services, but from documentation there seem to be a couple of things to do to grant access to database.
More info from documentation:
https://cloud.google.com/sql/docs/postgres/connect-external-app#appaccessIP
Basically you grant access for connection from outside and then you add that connection information to your strapi config file.
I noticed your host:
is not pointing to http://
or https://
but to some google server’s local address.
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