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# Polar plot point interpolation

Hi,

I'm trying to translate a XY chart into a polar plot. I have a collection of points in a given time that are represented on the XY chart (chart 1) with time on the X axis and the angle (in function of time) on the Y axis.

When I try to plot the equivalent polar chart, I expect to have the time on the radius and the angle on the angle axis. However, Oxyplot connects the points using a direct line between each two subsequent points, like the attachment image I've uploaded (on the 'wrong' label, chart 4).

I would expect that this interpolation would create an arc between each pair of points (char 3): this way, we don't go 'back in time' (you can notice this behaviour on the orange section of one of those lines that I marked on the attachment image... the interpolation that oxyplot does implies that on a XY chart we would have something like the chart number 3... notice that we go backwards in that interpolation too).

Is there a way to consider this kind of interpolation on the polar chart (chart number 2)?

I'm trying to translate a XY chart into a polar plot. I have a collection of points in a given time that are represented on the XY chart (chart 1) with time on the X axis and the angle (in function of time) on the Y axis.

When I try to plot the equivalent polar chart, I expect to have the time on the radius and the angle on the angle axis. However, Oxyplot connects the points using a direct line between each two subsequent points, like the attachment image I've uploaded (on the 'wrong' label, chart 4).

I would expect that this interpolation would create an arc between each pair of points (char 3): this way, we don't go 'back in time' (you can notice this behaviour on the orange section of one of those lines that I marked on the attachment image... the interpolation that oxyplot does implies that on a XY chart we would have something like the chart number 3... notice that we go backwards in that interpolation too).

Is there a way to consider this kind of interpolation on the polar chart (chart number 2)?

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Have you tried setting the "Smooth" property on the LineSeries to true?

Unfortunately it does not return the expected chart. If I set Smooth to true, I have this:

http://i.imgur.com/UjQenrZ.png

As you can see, I still have the "series going backwards" problem.

http://i.imgur.com/PmbOkMs.png

It may be difficult to view this as a static image, but when I advance the tracker I never go backwards, like I was trying to do (this will only happen with smooth = true). So this interpolation is being done already some place, it is just not plotted as a series.