Spectrus: Datasets Disappear from the Datasets List in Spectrus Processor JS

Description

When a new dataset (e.g., NMR, LC/MS, or UV data) is uploaded into Spectrus Processor JS, the spectra are displayed and can be interacted with normally in the workspace. However, if the user navigates back to the Datasets List or closes the application without explicitly downloading the dataset as a .spectrus file, the dataset may not appear in the Datasets List upon return. This behavior can result in the loss of all analysis, peak picking, and annotations performed during the session, as the dataset is not saved to the list for future access.

Symptoms

• Spectra open and display properly immediately following drag-and-drop.

• Upon returning to the home screen or closing the session the newly created dataset is missing from the Datasets List.

• The issue occurs intermittently when loading data directly into the workspace rather than completing the formal creation dialog.

Known Causes

• Temporary Dataset: Spectrus JS supports temporary/session-only datasets that are held in active memory but not registered in the persistent dataset list. When data is dragged directly into the viewer without explicit persistence settings enabled ('Save to datasets list' toggled on), the application may treat the session as temporary.

• Interrupted Asynchronous Upload/Save: Large data transfers or raw folder parsing require background synchronization to finalize server-side storage and catalog indexing. Navigating away or closing the tab before this background handshake co

Solution

To ensure datasets are reliably stored and visible in the Datasets List, apply the following procedures:

Method 1: Explicitly Commit via the Toolbar

1. After dragging and dropping the data folder and verifying the spectra have opened, inspect the application toolbar (such as on the Dashboard or Pages view).

2. Look for the Save to Datasets List option.

3. Click this button to commit the active dataset to persistent storage before leaving the workspace or closing the browser.

Method 2: Create Datasets via the Upload Dialog

1. Navigate to the main Datasets List / Home view.

2. Open the Upload / Create Dataset dialog instead of dragging files directly into an empty viewer.

3. Enter a dataset name and ensure the option to Save to Datasets List is enabled.

4. Select or drop your data folder into the modal.

5. Allow the upload and processing indicators to finish completely before opening the dataset or navigating elsewhere.