Graph mode "Arrow to next"

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Tue, 02/28/2017 - 08:11 am

Hi,

I always struggle around, if I have to use arrows in graphs. Up to now, the only way seems to be a tag. But in a tag you cannot exactly definie length and direction of an arrow. So the easiest thing would be to be able to place a trace on a graph that draws an arrow to the next data point. Then I can define arrows from traces. And I can also draw directional graphs on maps etc...

Best regards,
Joerg.
As a possible starting point for you, I suggest looking at the IP7 Examples-->Graphing Techniques --> Arrow Plot.pxp
Basically, you create a marker wave defined by the points you want to connect.

February 28, 2017 at 09:21 am - Permalink

Perhaps the arrowMarker keyword of ModifyGraph is what you're looking for?

For more information, execute the following command on Igor's command line:
DisplayHelpTopic "ModifyGraph for Traces"


Then scroll down a bit to the arrowMarker keyword. There's also a textMarker parameter which might be of some use.

February 28, 2017 at 09:22 am - Permalink