Axis 282 Bedienungsanleitung PDF herunterladen (Seite 75)

Chapter II-12 — Graphs

II-307

When we click Do It, Igor generates a graph style macro and puts it in the procedure window.

The graph style macro for this example is:

Proc Graph0Style() : GraphStyle

PauseUpdate; Silent 1 // modifying window...

ModifyGraph/Z lStyle[1]=1,lStyle[2]=2,lStyle[3]=3,lStyle[4]=4

ModifyGraph/Z rgb[0]=(0,0,0),rgb[1]=(577,43860,60159)

ModifyGraph/Z rgb[2]=(56683,2242,1698)

ModifyGraph/Z rgb[3]=(65495,2134,34028),rgb[4]=(64512,62423,1327)

ModifyGraph/Z minor=1

ModifyGraph/Z fStyle=1

SetAxis/Z left -1,5

SetAxis/Z right -1,5

EndMacro

The macro will sometimes need some touchup. In this example, we see two SetAxis commands at the

bottom. For this example, we don’t really consider the axis range as part of the style, so we delete these lines.

Notice that the graph style macro does not refer to wave0, wave1, wave2, wave3 or wave4. Instead, it refers

to traces by index. For example,

ModifyGraph rgb[0]=(0,0,0)

sets the color for the trace whose index is 0 to black. A trace’s index is determined by the order in which the

traces were displayed or appended to the graph. In the Modify Trace Appearance dialog, the trace whose

index is zero appears at the top of the list.

The /Z flag used in the graph style macro ignores any potential errors if the command tries to modify a trace that

is not actually in the graph. For example, if you make a graph with three traces (indices from 0 to 2) and apply

this style macro to it, there will be no trace whose index is 3 at the time you run the macro. The command:

ModifyGraph rgb[3]= (65495,2134,34028)

would generate an error in this case. Adding the /Z flag continues macro execution and ignores the error.

Style Macros and Preferences

When Igor generates a graph style macro, it generates commands to modify the target graph according to

the prototype graph. It assumes that the objects in the target will be in their factory default states at the time the

style macro is applied to the target. Therefore, it generates commands only for the objects in the prototype

which have been modified. If Igor did not make this assumption, it would have to generate commands for

every possible setting for every object in the prototype and style macros would be very large.

Because of this, you should create the new graph with preferences off and then apply the style macro.

Applying the Style Macro

To use this macro, you would perform the following steps.

1. Turn preferences off by choosing Preferences Off from the Misc menu.

2. Create a new graph, using the New Graph dialog and optionally the Append Traces to Graph dialog.

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Axis 282 Bedienungsanleitung Seite 75