Nevron Forum

Data point drag tool behaviour for a single series with all data 0

https://www.nevron.com/Forum/Topic9042.aspx

By Kevin Harrison 1 - Wednesday, April 1, 2015

I know this is almost an edge case, but if I plot a single series on a chart where all the data is 0, and activate data point dragging, then dragging any data point with the mouse results in strange oscillating behaviour, eventually reaching a very small value with no axis scale displayed.

I can mitigate this for arrow key movement by setting the step, but this does not affect the mouse dragging behaviour. Is there a property that allows me to control the mouse dragging increment?

Thanks

Kevin
By Nevron Support - Wednesday, April 8, 2015

Hi Kevin,

Unfortunately there is no setting that allows you to specify max change for dragged data points. Also it is indeed very difficult to define how data point dragging should work in the case of a single data point - most likely the answer is to use fixed axis ranges in order to avoid going to very small or large numbers when dragging occurs.
By Kevin Harrison 1 - Wednesday, April 8, 2015

Hi, I don't think you quite understood my problem.

It's not a single data point, it's a series containing multiple data points, all of which are 0. When you drag one of the points, the distance from the straight line series increases, but the actual value on the axis becomes smaller and smaller. If you keep dragging the axis labelling disappears, because its range has become smaller than the minimum displayable range.