Axis 282 Uživatelský manuál stáhnout pdf (Strana 57)

Chapter II-12 — Graphs

II-289

All of the cursor styles can be applied in various ways by choosing appropriate combinations of styles in

the Style pop-up menu. You can save your style settings as cursor style macros for easy reuse by choosing

Save style function under the Style function submenu in the Cursor pop-up menu.

When you first put an info box on a graph the cursors are at home and not associated with any wave. The

slide control is disabled and the readout area shows no values.

To activate a cursor, click it and drag it to the desired point on the wave whose values you want to examine.

Now the cursor appears on the graph and the cursor’s home is black indicating that the cursor is not home and

that it is active. The name of the wave which the cursor is on appears next to the cursor’s name. The slide control

is enabled indicating that you can move the cursor. On images and for free cursors, the slider changes to a small

square that you can drag up or down, left or right to move the cursor in the same way across the graph area.

In addition to attaching the cursors to points on a wave, you can use free cursors, which can move “at will”

anywhere within a graph. Simply choose Free in the cursor Style pop-up menu, following which you will

see “(free)” appended to the wave name in the info area. Free cursors can move anywhere within the graph

area and the cursor info area will update to show interpolated values at the cursor’s position. Free cursors

can be attached to both 1D and 2D traces in graphs.

The readout area shows the point number, X value, Y value, or Z value (when appropriate) for the point the

cursor is on. If you put both cursors on the graph the dX readout shows the difference between the X value

at cursor B and the X value at cursor A, the dY readout shows the difference between the Y value at cursor

B and the Y value at cursor A, and the dZ readout shows the difference between the Z value at cursor B and

the Z value at cursor A.

There are several ways to move a cursor. You can click it and drag it to a new point on the wave or to a new

wave. You can drag the slide control right or left to move the cursor continuously right or left. You can click

to one side or the other of the slide control or use the arrow keys on your keyboard to move the cursor by

one point (Shift-arrow moves by 10 points). Whenever you move the cursor the readout area is updated.

You can remove a cursor from the graph by dragging it away from the plotting area.

If you have both cursors on the graph and both are active, then the slide control moves both cursors at once.

If you want to move only one cursor you can use the mouse to drag that cursor to its new location. Another

way to move just one cursor is to deactivate the cursor that you don’t want to move. You do this by clicking

in the cursor’s empty home. This makes the empty home change from black to white indicating that the

cursor is not at home but also is not active. Then the slide control moves only the active cursor.

You can also move both cursors at once using direct drag. As long as both cursors are on the graph, you can

move both by holding shift before clicking and dragging one of the cursors. The selected state of the cursor

icon docks in the cursor info panel is irrelevant. You do not need to keep the Shift key depressed.

When you use the mouse to drag a cursor to a new location, Igor first searches for the wave the cursor is

currently attached to. Only if the new location is not near a point on the current wave are all the other waves

are searched. You can use this preferential treatment of the current wave to make sure the cursor lands on

the desired wave when many traces are overlapping in the destination region.

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Axis 282 Uživatelský manuál Strana 57