# UliEngineering
[](https://github.com/ulikoehler/UliEngineering/actions/workflows/test.yml) [](https://www.codacy.com/gh/ulikoehler/UliEngineering/dashboard?utm_source=github.com&utm_medium=referral&utm_content=ulikoehler/UliEngineering&utm_campaign=Badge_Grade) [](https://codecov.io/gh/ulikoehler/UliEngineering) [](https://codeclimate.com/github/ulikoehler/UliEngineering) 
A Python3 library for:
- Data science
- Electronics Engineering
- Specialized algorithms
- Physics
which contains a collection of functions I haven't found elsewhere.
Some algorithms have also been accepted on my blog [https://techoverflow.net/](https://techoverflow.net/)
Pull requests and bugreports of any kind are happily accepted.
## Installation
Run this command on your favourite shell:
```sh
sudo pip3 install UliEngineering
```
In order to install the latest bleeding-edge version, use:
```sh
sudo pip3 install git+https://github.com/ulikoehler/UliEngineering.git
```
We *highly recommend* you also install scipy:
```sh
sudo pip3 install scipy
```
(you can also use `sudo apt install python3-scipy` on Debian-based Linux distros).
While *scipy* is technically optional and listed as an optional dependency, many UliEngineering modules can't be used without it, including (might not be complete!):
* UliEngineering.Length
* UliEngineering.SignalProcessing.Interpolation
* UliEngineering.SignalProcessing.Correlation
* UliEngineering.Physics.JohnsonNyquistNoise
* Some functions in UliEngineering.SignalProcessing.Simulation
* Some functions in UliEngineering.SignalProcessing.Selection
After that you can use UliEngineering from any Python3 instance. Example:
```
$ python3
Python 3.5.2 (default, Nov 17 2016, 17:05:23)
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from UliEngineering.EngineerIO import *
>>> format_value(0.015, "V")
'15.0 mV'
```
## Getting started
On [my blog](https://techoverflow.net), I've posted several easy-to-use examples on how to solve real-world problems using UliEngineering:
- [Normalizing electronics engineering value notations using Python](https://techoverflow.net/2015/06/09/normalizing-electronics-engineering-value-notations-using-python/)
- [Finding the nearest E96 resistor value in Python](https://techoverflow.net/2015/05/19/finding-the-nearest-e96-resistor-value-in-python/)
- [Easy zero crossing detection in Python using UliEngineering](https://techoverflow.net/2018/12/31/easy-zero-crossing-detection-in-python-using-uliengineering/)
- [Easily generate sine/cosine wave test data in Python using UliEngineering](https://techoverflow.net/2018/12/31/easily-generate-sine-cosine-wave-data-in-python-using-uliengineering/)
- [Easily generate square/triangle/sawtooth/inverse sawtooth waveform data in Python using UliEngineering](https://techoverflow.net/2018/12/31/easily-generate-square-triangle-sawtooth-inverse-sawtooth-waveform-data-in-python-using-uliengineering/)
- [Easily compute & visualize FFTs in Python using UliEngineering](https://techoverflow.net/2018/12/31/easily-compute-visualize-ffts-in-python-using-uliengineering/)
- [Computing resistor power dissipation in Python using UliEngineering](https://techoverflow.net/2019/05/09/computing-the-temperature-under-load-of-your-electronics-components-in-python-using-uliengineering/)
- [Computing crystal load capacitance using Python & UliEngineering](https://techoverflow.net/2019/05/10/computing-crystal-load-capacitance-using-python-uliengineering/)
- [How to convert Celsius/Fahrenheit/Kelvin temperatures in Python using UliEngineering](https://techoverflow.net/2019/05/10/how-to-convert-celsius-fahrenheit-kelvin-temperatures-in-python-using-uliengineering/)
- [How to get unit/resolution of NumPy np.timedelta64 object](https://techoverflow.net/2019/05/13/how-to-get-unit-resolution-of-numpy-np-timedelta64-object/)
- [How to get unit/resolution of NumPy np.datetime64 object](https://techoverflow.net/2019/05/13/how-to-get-unit-resolution-of-numpy-np-datetime64-object/)
- [How to iterate all days of year using Python](https://techoverflow.net/2019/05/16/how-to-iterate-all-days-of-year-using-python/)
- [How to get number of days in month in Python](https://techoverflow.net/2019/05/16/how-to-get-number-of-days-in-month-in-python/)
- [How to compute candelas from lumens by apex angle](https://techoverflow.net/2019/08/19/lumen-to-candela-online-calculator-python-code/)
- [How to compute resistor voltage divider ratio using Python](https://techoverflow.net/2021/12/16/how-to-compute-resistor-voltage-divider-ratio-using-python/)
- [How to generate datetime for every hour on a given day in Python](https://techoverflow.net/2022/06/19/how-to-generate-datetime-for-every-hour-on-a-given-day-in-python/)
- [How to generate datetime for every minute on a given day in Python](https://techoverflow.net/2022/06/19/how-to-generate-datetime-for-every-minute-on-a-given-day-in-python/)
- [How to generate datetime for every second on a given day in Python](https://techoverflow.net/2022/06/19/how-to-generate-datetime-for-every-second-on-a-given-day-in-python/)
- [How to compute MRI Larmor frequency for a given magnetic field using Pythonf](https://techoverflow.net/2023/02/04/how-to-compute-mri-larmor-frequency-for-a-given-magnetic-field-using-python/)
- [How to compute voltage divider output voltage using Python](https://techoverflow.net/2023/02/05/how-to-compute-voltage-divider-output-voltage-using-python/)
- [How to format axis as dB (decibel) using matplotlib](https://techoverflow.net/2023/03/13/how-to-format-axis-as-db-decibel-using-matplotlib/)
- [How to compute Buck/Boost/LDO output voltage by feedback resistors using Python](https://techoverflow.net/2023/04/09/how-to-compute-buck-boost-ldo-output-voltage-by-feedback-resistors-using-python/)
- [How to compute the weight of a titanium or stainless steel rod using UliEngineering in Python](https://techoverflow.net/2023/05/21/how-to-compute-the-weight-of-a-titanium-or-stainless-steel-rod-using-uliengineering-in-python/)
- [How to compute non-inverting OpAmp amplifier gain using UliEngineering in Python](https://techoverflow.net/2023/09/18/how-to-compute-non-inverting-opamp-amplifier-gain-using-uliengineering-in-python/)
- [How to generate filename with date & time in Python](https://techoverflow.net/2022/09/02/how-to-generate-filename-with-date-time-in-python/)
## Testing
In order to run the unit tests, first install tox:
```sh
pip install --user tox
```
and then just run it in the root directory of the cloned repository
```sh
tox
```
Raw data
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Example:\n\n```\n$ python3\nPython 3.5.2 (default, Nov 17 2016, 17:05:23) \n[GCC 5.4.0 20160609] on linux\nType \"help\", \"copyright\", \"credits\" or \"license\" for more information.\n>>> from UliEngineering.EngineerIO import *\n>>> format_value(0.015, \"V\")\n'15.0 mV'\n```\n\n## Getting started\n\nOn [my blog](https://techoverflow.net), I've posted several easy-to-use examples on how to solve real-world problems using UliEngineering:\n - [Normalizing electronics engineering value notations using Python](https://techoverflow.net/2015/06/09/normalizing-electronics-engineering-value-notations-using-python/)\n - [Finding the nearest E96 resistor value in Python](https://techoverflow.net/2015/05/19/finding-the-nearest-e96-resistor-value-in-python/)\n - [Easy zero crossing detection in Python using UliEngineering](https://techoverflow.net/2018/12/31/easy-zero-crossing-detection-in-python-using-uliengineering/)\n - [Easily generate sine/cosine wave test data in Python using UliEngineering](https://techoverflow.net/2018/12/31/easily-generate-sine-cosine-wave-data-in-python-using-uliengineering/)\n - [Easily generate square/triangle/sawtooth/inverse sawtooth waveform data in Python using UliEngineering](https://techoverflow.net/2018/12/31/easily-generate-square-triangle-sawtooth-inverse-sawtooth-waveform-data-in-python-using-uliengineering/)\n - [Easily compute & visualize FFTs in Python using UliEngineering](https://techoverflow.net/2018/12/31/easily-compute-visualize-ffts-in-python-using-uliengineering/)\n - [Computing resistor power dissipation in Python using UliEngineering](https://techoverflow.net/2019/05/09/computing-the-temperature-under-load-of-your-electronics-components-in-python-using-uliengineering/)\n - [Computing crystal load capacitance using Python & UliEngineering](https://techoverflow.net/2019/05/10/computing-crystal-load-capacitance-using-python-uliengineering/)\n - [How to convert Celsius/Fahrenheit/Kelvin temperatures in Python using UliEngineering](https://techoverflow.net/2019/05/10/how-to-convert-celsius-fahrenheit-kelvin-temperatures-in-python-using-uliengineering/)\n - [How to get unit/resolution of NumPy np.timedelta64 object](https://techoverflow.net/2019/05/13/how-to-get-unit-resolution-of-numpy-np-timedelta64-object/)\n - [How to get unit/resolution of NumPy np.datetime64 object](https://techoverflow.net/2019/05/13/how-to-get-unit-resolution-of-numpy-np-datetime64-object/)\n - [How to iterate all days of year using Python](https://techoverflow.net/2019/05/16/how-to-iterate-all-days-of-year-using-python/)\n - [How to get number of days in month in Python](https://techoverflow.net/2019/05/16/how-to-get-number-of-days-in-month-in-python/)\n - [How to compute candelas from lumens by apex angle](https://techoverflow.net/2019/08/19/lumen-to-candela-online-calculator-python-code/)\n - [How to compute resistor voltage divider ratio using Python](https://techoverflow.net/2021/12/16/how-to-compute-resistor-voltage-divider-ratio-using-python/)\n - [How to generate datetime for every hour on a given day in Python](https://techoverflow.net/2022/06/19/how-to-generate-datetime-for-every-hour-on-a-given-day-in-python/)\n - 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[How to compute the weight of a titanium or stainless steel rod using UliEngineering in Python](https://techoverflow.net/2023/05/21/how-to-compute-the-weight-of-a-titanium-or-stainless-steel-rod-using-uliengineering-in-python/)\n - [How to compute non-inverting OpAmp amplifier gain using UliEngineering in Python](https://techoverflow.net/2023/09/18/how-to-compute-non-inverting-opamp-amplifier-gain-using-uliengineering-in-python/)\n - [How to generate filename with date & time in Python](https://techoverflow.net/2022/09/02/how-to-generate-filename-with-date-time-in-python/)\n\n## Testing\n\nIn order to run the unit tests, first install tox:\n\n```sh\npip install --user tox\n```\n\nand then just run it in the root directory of the cloned repository\n\n```sh\ntox\n```\n",
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