graph line interpolation

[Treble20]

Hi,

I have a graph, see image, which has lines that go to infinity even though i have turn off the fill base line. Is there any way of making the points join up instead of having lines that go to infinity.

Thanks

James

[johnsold]

James,

Look at the dot density between 4 and 6 V and compare to the density between -6 and -4 V.  If your data was uniformly sampled across the entier voltage axis, then you have lots of points with values less than 1 pA.  If you select a graph style which only displays points (no lines), you will not have the lines to -infinity.

Another option is to eliminate the data points with values less than 1E-12, but that can create its own issues.  You then have non-uniformly samped data or you must decide on a replacement value.  Replacing data with some other value can change the results of later analyses.  IT should be carefully considered before deciding to go that route and the rationale shoudl be documented.

Lynn

[Treble20]

Hi Lynn,

many thanks for your reply and thanks for the comments. I figured the problem out about 10 minutes ago and was going to put a post back later. After looking at the data closer there was negative current values so some were going from -pA to +pA which created the lines to infinity as the Y-Axis was a log plot.I just change all the Y axis values to absolute values and it solves the graph problem.

Many thanks

James