# DraMS Thumbnail

## Download

Updated on 2021-10-25:

[momadataviewZ.app.zip](https://s3.amazonaws.com/699_bin/DraMS/momadataviewZ.app.zip)

## Chromatogram Instructions 

1.  Load a MOMA GCMS run
2.  Under \"Data Viewers\" menu, select \"Chromatogram Viewer\"
3.  From Chromatogram viewer, click \"Thumbnail\" checkbox (calculation
    takes time, so there will be a period of unresponsiveness)
4.  Create a ZIC or cZIC trace with UI at bottom of window

The \'Z\' denotes the thumbnail data, which keeps only the detected
peaks that fit within the data volume estimate. If a SIC or cSIC is
duplicated with the \'+\' and the duplicate is changed to a ZIC or cZIC
it will stay linked to the original SIC or cSIC when changing m/z.
**NOTE:** the linking is only one way ZIC -->
SIC, not SIC --> ZIC

### Calculation Notes: 

-   Each summed histogram from the GCMS has a stripped down thumbnail
    counterpart, which is at most 74 detected peaks
-   If a detected peak has a FWHM \< 1.5 or \> 5.5 bins, it is rejected

## Mass Scan Viewer Instructions 

1.  Under \"Data Viewers\" menu, select \"Mass Scan Viewer\"
2.  Select a mass scan in the list on the left side of window
3.  Click the \"Math\" popup menu, and select the \"Fit All\" checkbox
    -   This plots the fitted peaks over the raw data
4.  To list the details of all the peaks, click \"Peaks\" popup menu and
    select the \"Show List\" checkbox
    -   The cutoff can be altered from the default value of 74 peaks
        with the \"Peak Number Cutoff\" field
    -   The red horizontal line indicates the y-axis value that
        corresponds to the cutoff

## Release History 

2021-09-27: Initial release of modified momadataview app for assessing
thumbnail product

2021-10-15: \[316f106\] Feature refinement before wider release
(includes dynamic peak cutoff line)

2021-10-25: \[bc44147\] Update mass scan viewer to reflect thumbnail
data