The Graph Area of the GraphLogView appears as a region consisting of a field of background color overlaid with a horizontal X axis at the bottom of the Graph region, one or more vertical Y-axes on the left edge of the Graph region, lines of data, and optionally text labels scattered about. The lines of data will not initially be visible until data is actually recorded in the PDPLog.
The range of the Axes is determined by the GraphLogViewSpec of their corresponding fields. The tick marks are displayed as decimal numbers with a factor of 10 multiplier on the bottom of the Y-axes or left side of the x-axis. (i.e. If the axis tick read "2.15" and the multiplier is"10X" then the actual value is 21.5).
The GraphLogView Graph area can be zoomed and scrolled in a similar way as the Netview by selecting the Mv/Scan or ReScale mode buttons in the upper left of the GraphLogView. In Move/Scan mode, the graph's coordinates can be translated by pressing and holding a mouse button in the background of the graph area. Moving with the left mouse button allows translations in both the Horizontal and Vertical planes, while the middle mouse button constrains movement to the Horizontal plane only and similarly the right mouse only allows Vertical movement. Likewise in Rescale mode, the left mouse button scales both dimensions, the middle mouse button only scales the Horizontal, and the right mouse button only scales the Vertical.
In Move/Scan mode if the mouse button is pressed while the pointer is
over a line in the graph area the pointer will turn to a clenched hand
and the value of the data at the mouse pointer location will appear
beside the pointer. Dragging the mouse with left mouse button pressed
will move a small box along the selected line, jumping from data point
to data point and indicating the values. Dragging with the middle mouse
button will move along the line, pixel by pixel, interpolating the line
value from the nearest two data points and displaying the value. When the
mouse button is released, the value and location box remain on the line
until the Init
button is pressed on the GraphLogView, or the
log's buffer is overfilled.