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I would like to transform hourly precipitation from GPM to daily. As GPM images of precipitation (mm/h) are every 30 min, I have divide by 2. But my code have apponted an error as "Date: Parameter 'value' is required". Could you helpe me? See the example of my code bellow:
vamos filtrar o conjunto de shapefiles com a função .filter() e escolher apenas a área de MG:
Hi @evmpython, when you run img.multiply(0.5), the properties of img are lost. It's an unfortunately confusing behavior in Earth Engine. wxee requires a system:time_start property to work, so that caused the error.
You can fix this by using copyProperties after you multiply. The example below should work!
Dear Aaron,
I would like to transform hourly precipitation from GPM to daily. As GPM images of precipitation (mm/h) are every 30 min, I have divide by 2. But my code have apponted an error as "Date: Parameter 'value' is required". Could you helpe me? See the example of my code bellow:
vamos filtrar o conjunto de shapefiles com a função
.filter()
e escolher apenas a área deMG
:regiao = ee.FeatureCollection('FAO/GAUL/2015/level1').filter(ee.Filter.eq('ADM1_NAME', 'Minas Gerais'))
**# carrega os dados
gpm = ee.ImageCollection('NASA/GPM_L3/IMERG_V06')
.select('precipitationCal')
.filterDate('2021-01-01', '2021-03-11')
.filterBounds(regiao)
transforma de mm/h para mm/0.5h
gpm = gpm.map(lambda img: img.multiply(0.5))
carrega os dados em formato de serie temporal
ts = gpm.wx.to_time_series()
agrupa para diário
daily = ts.aggregate_time(frequency='day', reducer=ee.Reducer.sum())
transforma para DataSet do Xarray**
ds = daily.wx.to_xarray(region=regiao.geometry(), scale=7000)
Thank you very much.
Best Regards,
Enrique
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