Complementary Filter Code Not functioning

I've been scratching my head too long. The data is coming from an 3D accelerometer and 3D gyro. I am using a complementary filter to control drift. I have it working in excel but can't seem to get...

timer interrupt thread python

I've been trying to make a precise timer in python, or as precise a OS allows it to be. But It seems to be more complicated than I initially thought. This is how I would like it to work: from time...

"django.db.utils.ProgrammingError: relation "app_user" does not exist" during manage.py test

My setup: Django 1.8.3 Python 2.7.10 Ubuntu 14.04 django-two-factor-auth==1.2.0 I get the following error when I run python manage.py test: Traceback (most recent call last): File...

FiPy fork error

I am currently trying to use fipy on our local cluster (Scientific Linux 6.9 and Python 2.7.8) to perform some drift-diffusion calculations, and I'm having difficulty with solving in parallel....

Making a timer: timeout inaccuracy of threading.Event.wait - Python 3.6

First of all, I am new to Python and not familiar with its functionalities. I've been mainly using MATLAB. PC brief spec.: Windows 10, Intel i7 I am trying to make a timer class for periodic...

Calculating two different formulas in one column in Python 3 and Pandas

I currently have the following dataframe and would like to fill in the empty "weight" cells with a drifted value (explained below). For values above 234 in the 'weight' column I would like to...

Running tests against code examples in a README.md?

Does anyone know of an open-source project or program for running tests against code examples in README.md? A perennial problem, my documentation tends to drift out of date with the code. For...

How to always round up a XX.5 in numpy

I read that numpy is unbiased in rounding and that it works the way its designed. That "if you always round 0.5 up to the next largest number, then the average of a bunch rounded numbers is...

python sqlite not returning None even though it is None?

This is an assignment I have to do for an online course. We are learning about data modeling and relational databases. For this assignment, We have to take input data from an iTunes xml playlist...

Calculate average value of multiple FFT's

I'm doing a project where I'm aquiring accelerometer data from a custom designed measurement system. The measurement system is an accelerometer connected to a Raspberry pi 3, running a Python...

modifying images to get sharp, non-noisy features for optical flow/image stabilization

I am attempting to develop a pipeline for stabilizing images of a fluid experiment using opencv in Python. Here is an example raw image (actual size: 1920x1460) This pipeline should be able to...

How to properly correct for XY image drift using a python script?

I'm new at coding and this is my first post! As a first serious task, I'm trying to implement a simple image drift correction routine in python (so I do not need to rely on ImageJ plugins) using...

How to estimate Parameters of Black-schole or GBM in R

How can I estimate the Drift and Volatility of GBM or BROWNIAN MOTION PROCESS in R code ?. there are some code in python But there in not anything in R

Is asyncio.loop.time() comparable with datetime.datetime.now() and how?

I'm hoping to use an asyncio.loop to set callbacks at specific times. My problem is that I need to schedule these based on datetime.datetime objects (UTC) but asyncio.loop.call_at() uses an...

Parallel (buffered) readout of multiple I2C devices, python 3

For experimental measurements of human balance, I would like to connect and read out multiple I2C sensors (gyro/mag/accelerometer, such as this one). I have managed to hook them up...

Running AWS SAM build from within Python script

I'm in the process of migrating entire CloudFormation stacks to Troposphere, including Lambda and Lambda-reliant CFN Custom Resources. One of my goals is to circumvent the creation of template...

List plotting speed vs Numpy array plotting speed

   Hello dear stackoverflow users. I have a conceptual question (therefore, no code is necessary). I was wondering if anybody could help me with it, please.    Assume I have a python list of...

how to handle variable column headers (row location) in azure data factory

We ingest data from multiple customers and have no control over the format of the data. The data pertains to the same subject matter but the file names, column names, headers, and row headings are...

How to loop a function to perform a task every 15 minutes (on the 0/15/30/45 minute mark)?

I have a program running on a Raspberry Pi, and I want to pull some data from a thermometer every 15 minutes at 0, 15, 30 and 45 minutes past the hour. I have tried this using a while loop, I...

How to create virtualenv with bazel 0.24, then use that in py_runtime

I have an existing project that uses bazel 0.24. The project does not define a py_runtime. Right now, py_test targets can import items from /usr/local/lib/python2.7/dist-packages/ which breaks...

How to install external modules in a Python Lambda Function created by AWS CDK?

I'm using the Python AWS CDK in Cloud9 and I'm deploying a simple Lambda function that is supposed to send an API request to Atlassian's API when an Object is uploaded to an S3 Bucket (also...

DEAP: make mutation probability depend on generation number

I am using a genetic algorithm implemented with the DEAP library for Python. In order to avoid premature convergence, and to force exploration of the feature space, I would like the mutation...

What is the best way to run a function every 5 minutes in python synced with system clock?

I want to run a function every 5 minutes and have it synced with the clock. If I use time.sleep(60*5), the time starts to drift because my function adds a tiny bit of processing time. Is this a...

FFMPEG Audio/video out of sync after cutting and concatonating even after transcoding

I am attempting to take cuts from a set of videos and concatonate them together with the concat demuxer. However, the audio is out of sync of the video in the output. The audio seems to drift...

Correcting Clock Drift in Time Series

Firstly, I apologise for the naming of this request – I'm a little unsure of exactly what the technique is labeled. I will try to explain as best as I can. I have loggers in the field collecting...

Plotting subplots from a nested for loop in Python

I am trying to plot line plots(Drifted brownian motion) for different values of mu and sigma, I have a function that iterates a list of possible mu values and possible sigma values and it's...

How to compare two .csv and .xlsx files and print out mismatched for a particular field?

So it doesn't matter if they are two different .csv or .xlsx files. But I need a common way on how to tell the mismatched fields. Both Files are different in terms of both shape and size. For...

How to accumulate messages as mqtt client for 1 second, then save it to a file

my problem is as follows: I wrote a program that subscribes to a topic, where 2 dictionaries with one key respectively arrive more times a second. On every message they change their value. I...

Do Something At a Consistent Frequency in Python

I have a python program that reads from a serial port, accesses registers then writes data to the CSV. Id like to perform a writing operation to the csv at a set frequency of 100Hz. Below is...

Getting 3D Position Coordinates from an IMU Sensor on Python

I am planning to acquire position in 3D cartesian coordinates from an IMU (Inertial Sensor) containing Accelerometer and Gyroscope. I'm using this to track the objects position and trajectory in...