GEO数据库中的文件(SOFT)
除了用GEO2下载数据外,还可以自己直接下载。在看GSE数据集的时候,会看到这三个文件。
Download family | Format | Description |
---|---|---|
SOFT formatted family file(s) | SOFT | SOFT family files are text files that incorporate complete data and meta data for all Platform, Sample and Series records in the family |
MINiML formatted family file(s) | MINiML | MINilML family files are XML files that incorporate complete data and metadata for all Platform, Sample and series records in the family |
Series Matrix File(s) | TXT | Series matrix files are text files that include a tab-delimited value-matrix table generated from the VALUE' column of each Sample, headed by Sample and Series metadata. These files are suitable for loading into spreadsheet applications such as Excel. CAUTION: data are extracted directly from the original records with no consideration as to whether the values are directly comparable. |
下数据当然可以用GEO2R,不一定每次都自己下载原始文件,但了解文件格式和内容是很重要的。SOFT formatted family file,MINiML formatted family file,Series Matrix File。以https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE68849为例。
SOFT formatted family file
1,Meta信息
这个文件的头数据记录数据集的编号,实验介绍,包含的样本,使用的平台,上传人等信息,和网页显示的对应。^开头表示entity实体,!表示entity的属性,#表示描述行。