1:Pysmo下的sac和aimbat需要放在和前面的toolkits 相同的地方，Python就能找到；
在安装obspy时，需要装yum-plugin-copr;
方法在网址：
https://copr.fedorainfracloud.org/coprs/alonid/yum-plugin-cor
2:obspy installation
https://github.com/obspy/obspy/wiki/Installation-on-Linux-via-RPM-Repository
3:then downloaded sod to get seismograms
sod sod_request.xml
4: or download SAC data through Wilber
needing add theoreotical arrival times for each SAC file.
5:error:no module named backend-tkagg
sudo yum install python-matplotlib-tk;