Uploading investigation data to the CSSI DCC Portal allows you to curate, manage, and reuse datasets in a standards-compliant way. The ISA-TAB specification describes this standard and how to structure your investigation data to create an Investigation-Study-Assay tab-delimited (ISA-TAB) archive file. This may involve configuring it using open-source software made for this purpose.
An ISA-TAB archive file is a compressed (.ZIP) file containing multiple text files and data files. Each tab-delimited text file in an ISA-TAB file describes the structure, meaning the column headers and row values when considered in spreadsheet format, of the investigation, study, and assay components of the archive. The data files correspond to each assay and are included in the archive in their native format, for example, Microsoft Excel. An ISA-TAB archive file may also contain images.
Only users who have registered for and logged in to the CSSI DCC Portal can upload investigation data.
Before you can log in for the first time, you must register.
To register on the CSSI DCC Portal
Before you can upload investigation data, you must register and then log in.
You do not need to log in to browse, search, and download investigation data.
To log in to the CSSI DCC Portal
Files that you upload to the portal must be in one of the following archive formats: Also, before uploading files <ask about preparation, verification> |
To upload ISA-TAB files
Click New Project.
The Project Properties page appears.
A project is simply a container for the ISA-TAB file. It allows you to track multiple versions of ISA-TAB file uploads to this project. It is a best practice for each investigation to have its own project. |
Click Save Project.
The new project is listed under Investigation Projects.
If the File Upload section of the page is not visible, click Open next to the project name to show it. |
If needed now or later, click Edit to change the project name. Depending on your privileges, you may not see the Delete button. |
Select the file you want to upload to this project in one of the following ways:
Drag and drop the ISA-TAB archive file from your computer to the Drop your files here box surrounded by the dashed lines:
Click the Drop your files here box image and browse to where the file is stored.
ISA-TAB files that you upload must be in |
The first time you upload an ISA TAB file to a new project, it is the first version of that file. While it is a best practice to associate only one investigation with a project, you can make changes to your investigation data, create a new ISA TAB file that reflects those changes, and then upload the new file to the original project. Each time you upload a new ISA TAB file to a project, the version number increases by one. |
Click Open.
The project information opens below on the page.
Missing Data Files: File processed successfully. 1 files referenced in the assay(s) were not found. Click here to view the missing file lists (limited to 1000 entries each).