https://stackoverflow.com/questions/40187517/getting-covariance-matrix-of-fitted-parameters-from-scipy-optimize-least-squares
2024년 2월 13일 화요일
2024년 2월 5일 월요일
PyQt5 adding FigureCanvas in designer
(1) Put a layout in a designer. rename it as convenient
(2) Click Right Mouse Button and change it into a Widget.
(3) After that, one can put Canvas Widget into the layout.
2024년 1월 31일 수요일
OMP: Error #15: Initializing libiomp5md.dll, but found libiomp5md.dll already initialized
It is suspected that this error comes from the multiple library confilcts which have libiomp5.dll files.
One solution is to delete libiomp5md.dll (and other libiomp5 related files)
in anaconda3/Library/bin . (anaconda3 is located in hidden "ProgramData" folder.)
It is not clear whether this is the best solution, but it works.
(Update) The above symptom first appeared while using PyTorch , Matplotlib, and Scipy.
However, after above procedure,
there are many occasions that the kernel stops and restart. Python became very unstable.
To avoid this problem, it may be better to use separate environment when installing pytorch.
2024년 1월 24일 수요일
Wolfram Engine Jupyter 매쓰매티카
(1) get Free Wolfram engine : https://www.wolfram.com/engine/
(2) get Wolfram language for Jupyter
: https://github.com/WolframResearch/WolframLanguageForJupyter
unzip the file at permanant folder and do not delete it.
(3) Follow steps in the page
- install Wolfram engine and run "wolframscript" at command line
- download Wolfram language for Jupyer and run "configure-jupyter.wls add" in powershell. (not command prompt)
2023년 12월 2일 토요일
어나더에덴 반짝이 지도
2023년 12월 1일 금요일
QCY T1earphone bluetooth 블루투스 이어폰 링크
How to Pair
Push both EarBuds into charging case to activate them then take out from the case and they will auto power on and pair with each other. Right EarBud will auto enter pairing mode when LED on left EarBud turns off. On cellphone, search for QCY-T1_R and tap to connect cellphone to both EarBuds. (Please try the following steps, in case you fail to build connection.) Power off two EarBuds and tap and hold MFBs on both of them for 20s (LED will blink red and white then turn off and 10s later blink red and white 3 times). Tap and hold two EarBuds for 1s to power on(LED blinks red white twice) and two EarBuds will auto pair with each other. Then right EarBud will auto enter pairing mode(LED blinks red and white) when LED on left EarBud turn off. On cellphone, search for QCY-T1_R and tap to connect both EarBuds with cellphone. Notes: if two EarBuds fail to pair with each other in 20s, they will enter pairing mode(connectable to cellphone).