查看“Marvin”的源代码

==安装==
*pip install sdss-marvin
*pip install -U sdss-marvin

==配置==
* 注意设置一些环境变量，关键是要找到dapall文件
 setenv SAS_BASE_DIR $HOME/MaNGA
 setenv MANGA_SPECTRO_REDUX $SAS_BASE_DIR/mangawork/manga/spectro/redux 
 setenv MANGA_SPECTRO_ANALYSIS $SAS_BASE_DIR/mangawork/manga/spectro/analysis
*mode
 import marvin
 marvin.config.mode = 'local'   # or 'remote'，‘auto’
 marvin.config.access = 'collab' # 'DR15'
 marvin.config.setRelease("MPL-10")

* collab模式下要设置.netrc文件

==功能==

===Maps===
*读取dap中的map
:map的data model 可以参看 https://sdss-marvin.readthedocs.io/en/latest/datamodel/mpl10.html?highlight=property%20name#dap-datamodel

* 速度弥散度的改正 inst_sigma_correction()
 Ha_sig=dapmap.getMap('emline_gsigma',channel='ha')
 #Ha_sigcorr=dapmap.getMap('emline_gsigmacorr',channel='ha')
 Ha_vdis=Ha.inst_sigma_correction()
 st_sig=dapmap.getMap('stellar_sigma')
 #st_sigcorr=dapmap.getMap('stellar_sigmacorr',channel='fit')
 st_vdis=st_sig.inst_sigma_correction()