How to calculate the percentile for each cell from timeseries raster

[BennyIstanto]

Branched from: https://community.esri.com/thread/95403 

Hi Xander Bakker thank you for above script. I have tested and it works using my data.

But I have question. Let say I have timeseries raster data from 1981 to 2016, its the max of daily rainfall in a year, so its just 1 raster data for 1 year. For each cell in x,y location from 1981 to 2016, I would like to calculate the percentile of i.e 90%. 

How to calculate the percentile for each cell from timeseries raster using your script?

[DanPatterson_Retired]

Define Projection.... as per usual in the Data Management tools, Projections and Transformations

[BennyIstanto]

Thank you Dan, finally I managed to add the spatial ref.

I added info on line 23-27 to line 30

out = arcpy.NumPyArrayToRaster(n_90, arcpy.Point(114.4317366,-8.8492618), x_cell_size=0.049242234706753, y_cell_size=0.049242234706753, value_to_nodata=0)‍

[DanPatterson_Retired]

Ahhh that is what I was referring to in a previous post.  That was the missing information when I originally ran it.