读写:
https://seisman.github.io/SAC_Docs_zh/commands/write/
保存文件:
https://seisman.github.io/SAC_Docs_zh/graphics/save-image/
滤波:
https://seisman.github.io/SAC_Docs_zh/data-process/filter/
在没有用户界面的时候画图
https://seisman.github.io/SAC_Docs_zh/graphics/save-image/