Index

Configuring a graph

The graph configuration dialog is automatically displayed whenever you create a new graph. To reconfigure a graph after it has been created, switch to the graph reconfiguration cursor mode, either by pressing the "g" within the plot window, or by pulling down the Cursor plot menu and selecting Modify Graph. The cursor will change to a cross hair. Place this cross hair over the graph that you wish to reconfigure and press the left mouse button. This will bring up the dialog. whenever To add a new graph to a plot, either hit the "a" key on the keyboard, while the mouse cursor is within the plot window, or pull down the Configure menu of the plot window, and select Add Graph. In both cases, a graph-configuration dialog will be displayed. Within this dialog you will see the following entry fields:

Registers (one per line)
Each graph can be used to display multiple registers against the same x and y axes. The registers are specified in this field, one per line. When a register specification selects a register that contains an array of values, one can specify any contiguous range of elements from this register to be displayed. For example, given the 13 element total power register, corr0.tp.
- corr0.tp
  Means display all 13 elements of the array.
- corr0.tp[3]
  Means display just element 3 of the array.
- corr0.tp[3-5]
  Means display elements 3,4 and 5 of the array. Note that if the number before the hyphen had been omitted, 0 would have been substituted. Similarly, if the number after the hyphen had been omitted, the index of the last element in the array, (12 in this case) would have been substituted.
The easiest way to select a particular register is to click on the green list button next to the register entry field. This results in a menu of board names being displayed, and when the mouse is placed over one of these board names, a sub-menu is displayed, listing the names of the registers on that board. Selecting one of these registers results in the corresponding register specification being appended to the list of selected registers. If needed, you can then edit this specification to specify which elements to display.
Label
This specifies the label to display along the y-axis of the graph.
Range
This specifies the initial limits of the y-axis.
Bit numbers (eg. 0,1..)
This optional field allows you to request that one or more bits from the least significant 32 bits of the integral part of the number be displayed. The values of the bits are displayed by showing logical 0 as the bit number minus 0.25, and logical 1 as 0.25 plus the number of the bit. Thus if bit 12 is selected for display, on the graph it toggles between values of 11.75 and 12.25.

Martin Shepherd (4-Nov-1999)