使用 Homebrew 安裝 gnuplot 發現無法使用 Aquaterm
必須額外動一些手腳才行
首先，先 uninstall gnuplot

$ brew uninstall gnuplot

接下來按以下步驟：
Step.1 安裝 Aquaterm from http://sourceforge.net/projects/aquaterm

Step.2 準備 Aquaterm Library and Include files
先檢查是不是早就已經準備好

$ ls /usr/local/lib/libaquaterm*
$ ls /usr/local/include/aquaterm/*

若沒有，則執行下列命令

$ sudo ln -s /Library/Frameworks/AquaTerm.framework/Versions/A/AquaTerm /usr/local/lib/libaquaterm.dylib
$ sudo ln -s /Library/Frameworks/AquaTerm.framework/Versions/A/AquaTerm /usr/local/lib/libaquaterm.1.0.0.dylib
$ sudo ln -s /Library/Frameworks/AquaTerm.framework/Versions/A/Headers /usr/local/include/aquaterm

Step.3 安裝 gnuplot

$ brew install gnuplot

搞定！