The Mnem Mnem Chart

The Mnem Mnem View is where the user can plot the values from one mnemonic against another. The X axis data points are taken as is, the Y axis points are matched on a time stamp basis against the X axis values. If no exact time correlation exist, then the Y axis values are interpolated on a straight line basis (the X axis end values are extended out to +- infinity time to determine Y values outside the time domain of the X axis). Point pairs are then examined and all redundant points are removed from the plot list. The remaining point pairs are then plotted as an X-Y point plot.

To create the Mnem Mnem Chart:

(Assumes that data is downloaded, and all charting parameters have been set)

1. Go to the Mnem Mnem View page



2. Select a Y axis mnemonic from the drop down list labeled Select Y Axis Mnemonic

3. Select an X axis mnemonic from the drop down list labeled Select X Axis Mnemonic

4. Click on the Plot button

5. If the analysis takes too long, the user can click on the Abort button.

Other features on this page:

• The tool bar contains buttons for:

    Saving the chart as a JPEG file.

    Opening a viewer for saved JPEG files.

    Copying the chart to the clipboard.

    Printing the chart.

    Showing/hiding the grid lines.

    Showing/hiding the legend.

• Zoom In by either clicking a tool bar button or dragging across the chart from top left to bottom right

• Zoom Out by either clicking a tool bar button or dragging across the chart from any direction except top left to bottom right

• Scroll the chart by right dragging across it

• See the current cursor position on the chart from the read-out in the lower left of the window.

Send comments to Webmaster: Jeffrey Ferrara (Jeffrey.F.Ferrara@gsfc.nasa.gov), Code 584.0
Cognizant Management Official: John Donohue, Code 584.0

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