In Gnuplot, stats can help you to do some statistical works easily. For example, correlation coefficient:
Take a look of chapter “Stats” in gnuplot manual first.
Install Frescobaldi On openSUSE
Frescobaldi is a PyQt-based GUI editor for GNU LilyPond.
Following are some notes for installing Frescobaldi under openSUSE.
Since 13.2, it seems that
Frescobaldihas been included in openSUSE official repository, so you should don’t need to add OBS repositories nor upgrade PyQt4 & SIP.
Pentadactyl For Emacser
Pentadactyl is a Firefox plugin ,which can let you:
- Get rid of mouse.
- Manipulate the whole Firefox with Vim-flavored key-bindings.
- Minimize unnecessary UI parts and maximize browse area.
Pentadactyl has great flexibility, so you can re-binding keys into Emacs-flavored.
Installation
- Install Pentadactyl
- Download my Pentadactyl configuration file and move it as
~/.pentadactyl/plugins/emacs.penta. - Restart Firefox.
If Pentadactyl act abnormally after upgrading FireFox, try to upgrade your Pentadactyl first, most of problems can be solved immediately. If still unsolved, install nightly builds.
[PyQt] QListWidget, QTreeWidget 簡易範例
這是一個靠杯複雜的鬼東西、和各種容易誤解難懂難記的詭異概念，所以決定還是寫一篇簡單筆記，或許會對初學者有一點點的幫助。
從 PyQt 入門學寫 Python
[2018-04-03 火 10:03] 修正一些錯誤觀念
[2014-09-22 月 22:33] 更新：新增 parent 說明
學了一個暑假的 PyQt，決定還是應該把詳細的撞牆筆記寫出來，如果您想學 PyQt，希望這篇對您會有點幫助。以下概念如有謬誤敬請指正:)
- 那入門學 PyQt 要不要順便一起學 QML 呢？我個人的建議是：不要。
- [2018-04-03 火 10:06] 補充：QML 是我見過最糟糕的程式語言之一，滿滿的雷，是個實做殘缺不全又飽含許多讓你開發到抓狂的異常行為的 ECMAScript/JavaScript，我現在連寫 Qt/C++ 都已經放棄 QML 了、繼續寫 QWidget 去。
由於我之前沒有 OOP 基礎，所以一開始的門檻還是有點高，也因此這部份我會講得比較清楚又囉唆一點，讓沒有 OOP 基礎的人也能夠輕易看懂。不過學 PyQt 其實不需要先學會 Python，就跟（聽說）學 Rails 並不須要先學會 Ruby 一樣。因為PyQt 會用到的 Python 特性非常偏頗，而且細節頗多，與其說在寫 Python 還不如說就是在寫 PyQt。最難的就是搞懂並記住這些特性與細節（且有些細節在一般 Python 程式裡應該也很少用），基本上先把幾個基本概念和常用 pattern 記住就對了。