•Cursor and the Status Line•

Chapter 5 Log Charts
Viewing Chart Data
Niagara Release Niagara Browser Access Guide Revised: August 15, 2002
5–5
Zoom In
You can zoom in on anytime (x-axis) portion of the chart by merely clicking and dragging the cursor across to highlight (mark) the area. When you release the mouse button, the data area reflects only the previously marked area—in other words, you have zoomed in on a specific range of log records.
When you zoom in, horizontal time labels (on the x-axis) update to show the new time and date range. You can continue to zoom in many times, if needed.
Zoom Out
Click the Zoom Out button on the control bar to return to the previous zoom level. If you zoomed in multiple times, each click returns you back one zoom level.
Note
If control bar buttons are not visible, you will have to toggle the control baron first. Just click on the toggle control bar arrow on the left-side bottom of the data area.
U
SING
THE
LEGEND A
REA
Use the legend area to select a log (just click on the log listed in the legend a selected log becomes highlighted yellow. You must select a log this way to change its chart type or color. A number of control bar buttons become associated with that particular log.
If viewing a single log, you must still click on it to activate most control bar buttons. Often, you may wish to select the log and then close the legend (to make the data area bigger. Control bar buttons apply to the last log you selected in the legend.
Note
If you click in a blank spot of the legend area (unselect a log, many control bar buttons become unavailable (grayed out. Only buttons for controls that apply to the whole
LogChart remain available—for example, toggle D, toggle grid, etc. See Figure Click and drag the cursor to highlight.
Release the mouse button to zoom in.

Niagara Release 2.3
Revised: August 15, 2002
Niagara Browser Access Guide
Chapter 5 Log Charts
Viewing Chart Data

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