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Google's cloud computing platform for geospatial data & analysis at earthengine.google.com.

0 votes
1 answer
137 views

Reducing and exporting to CSV returns duplicated rows with 0 values for calculated NDVI

I have table of 10 points that I want to extract the mean and standard deviation of NDVI from sentinel within a buffered area for a time period. I am running into a problem where when I reduce it and …
Douglas's user avatar
  • 425
1 vote
1 answer
803 views

Calculating landcover proportion for polygon on Google Earth Engine

I am trying to calculate the area of six landcover classes within a polygon. However the proportions I get back do not add up to one. For example: var CL = ee.ImageCollection('USDA/NASS/CDL').select(' …
Douglas's user avatar
  • 425
0 votes
0 answers
1k views

Google Earth Engine goes unresponsive during large extraction

What we are trying to do: We are trying to extract a NDVI time series for a large dataset of insect outbreaks. This time series needs to be associated with the observation date for each insect outbrea …
Douglas's user avatar
  • 425
1 vote
0 answers
131 views

GEE NDVI time series extraction does not populate CSV file columns

I am trying to extract a time series of sentinel NDVI data. This script (below) takes a feature collection of points, buffers around them, and collects all available imagery 30 days before each featur …
Douglas's user avatar
  • 425
2 votes
1 answer
520 views

Subscript out of bounds error while mosaicking TIFFs together

I have just downloaded NDVI imagery from Google Earth Engine. The image was too big so it was divided into about 35 .tif files. Each tile has approximately 950 bands of NDVI values. I am now trying to …
Douglas's user avatar
  • 425