Date Range Slider in the DataFilterExtension

[kentstephen]

Hi,

I am trying to create a slider filter by date range in Lonboard. I think I am missing something conceptually, because it seems like the DataFilterExtension() wants floats or a numpy array. Is there any way to show geometries on different days with a slider? My dates look like 20240101. Using DuckDB. Thank you.

[kylebarron]

You need to convert your dates to floats. So you need to parse the string into a "date" type and then convert that date to timestamps.

However an extra point of complexity is that a float32 type can't represent milliseconds since unix epoch. So you usually want to subtract off the start of your date range, so you have "milliseconds since the start of your range".

It would be great to make this simpler in the future

[kentstephen]

thank you Kyle, I probably will have to follow up on this. Appreciate your time.