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For ASAP method, what is the difference between 1000 original data points downsampled to 1000 data points versus 900 original data points to 900 #16

@peterj35

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@peterj35

Hello, we were playing around with the periodic data demo and had a question regarding the ASAP downsampling method.

When I 'downsample' 1000 original points to 1000 downsampled points, I get a graph that looks like this:
image

I would say that the ASAP trendline matches the original data fairly accurately, applied a little bit of smoothing, but the original data is pretty much intact.

However, when I downsample 900 original points to 900 downsampled points, I get a graph that looks like this:
image

Although theoretically it seems to me that mapping 1000 -> 1000 or 900 -> 900 should've made no difference in the amount of detail that is preserved, in practice, it seems like there's quite a bit of difference, where the 900 -> 900 lost significantly more detail than 1000 -> 1000.

Was wondering if this is a characteristic somehow of the ASAP downsampling method, or if this was a potential bug. We would like the results of the 1000 -> 1000 sampling consistently, to preserve around that level of detail as a result of the downsampling.

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