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Questions tagged [google-earth-engine]

Google's cloud computing platform for geospatial data & analysis at earthengine.google.com, which can be programmed using either Python or JavaScript client libraries.

Earth Engine has client libraries in both and .

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How to get the difference image of this month and the previous month in Google Earth Engine with a smart way?

How to get the difference image of this month and the previous month in Google Earth Engine with a smart way? study area 25E-75E，5S-35N。 // study area 25E-75E，5S-35N。 var geometry = ee.Geometry.Polygon( [[[25, 35], [25,…
宋英旭
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Google Earth Engine: Extract band values from pixel in each image of a collection?

sorry for the basic question, I'm a GEE beginner. Essentially, what I want to do it extract the value of a certain band in a pixel from each image in a collection, and put it into an array. I understand how to do this if the output is to a chart,…
perezoso_estudioso
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Converting Google Earth Engine Image Array to Numpy Array (each pixel is an Array of band values); (Python)

Here's an example of getting a Sentinel-2 Image from Google Earth Engine import ee # Sentinel 2 Image Collection s2_image_collection = ee.ImageCollection("COPERNICUS/S2_SR") # Defining bounds sls_latitude = 37.424160 sls_longitude =…
Vincent
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Extract timeseries data from ERA5 - Google Earth Engine

I am trying to extract a time series of mean daily temperatures that intersect with a point feature from the ERA5 dataset in Google Earth Engine. For some rages of years (e.g., '1979' to'1980'), the output throws an 'Internal Server Error'. Other…
emmadavis
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How to remove images with specific WRS_PATH and WRS_ROW from a landsat 8 surface reflectance collection?

There are four tiles (path:41,row:35/path:41,row:36/path:42,row:35/path:42,row:36) of LANDSAT 8 surface reflectance that cover my study area. I want to remove only images(tile) with path 42 and row 36 from this collection. How can I do that? Here is…
7th storm
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Calculating NDVI per region, month & year with Google Earth Engine? - Follow up Question

This question refers to post: Calculating NDVI per region, month & year with Google Earth Engine? I have modified the code posted by @Kel Markert https://code.earthengine.google.com/349615d7802d59f677181bef0badad9f to attempt to get a maximum…
Jock
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Output value of a specific latitude and longitude point at Python

Due to my shorten explanation, I edit this question at 2020/01/20. Sorry for answerer of original. I want the TOA reflectance value of a specific latitude / longitude band. I could do this with javascript by below code, but I could not do the same…
Kamoriq
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Creating Sentinel-2 NDVI time series chart in Colab?

What is the equivalent of the following syntax in Python: ui.Chart.image.doySeriesByYear({ imageCollection: collection, bandName: 'NDVI', region: forest, regionReducer:…
OverFlow Police
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"smile" classifiers in Google Earth Engine

What are the "smile" type classifiers in Google Earth Engine API? I see for example ee.classifier.NaiveBayes and ee.classifier.SmileNaiveBayes with exactly the same description, and I couldn't find anything else on the net about the "smile" thing.
Shahriar49
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GEE Python API: Showing image fails

I have been trying to troubleshoot my way through the Python API on GEE but I just cannot figure out the problem. I searched the forums for a similar issue but solutions I found didn't help with the problem. I am trying to simply show an Image on…
user2647734
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How do I group a number of sites (point geometries) together as a feature collection, to perform NDVI change calculations on all the sites?

I am new to stack overflow and javascript, so apologies in advance. The overall aim: calculate the NDVI change over time (inter- and intra-annual) at 8 sites using the landsat 8 image collection. Rather than do calculations on each one separately, I…
jerry_88
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Using R to process google earth engine data

I want to download the daily tmax from the NASA for a given lat lon (https://developers.google.com/earth-engine/datasets/catalog/NASA_NEX-DCP30_ENSEMBLE_STATS) using the following tutorial…
89_Simple
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In Google Earth Engine: Most efficiently reduceRegions over each image in ImageCollection, saving mean as a Feature property?

I have a FeatureCollection made up of many (100-200) polygons ('ftr_polygons'). I also have an ImageCollection made up of monthly median Landsat8 bands and indices ('byMonth'). I want to ReduceRegions and save a median (or mean) spatial average from…
Kyle Hemes
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Exporting daily climatology data from NEX-GDDP product on Google Earth Engine

I am using NEX-GDDP for obtaining daily climatology (Precipitation, Temp min and Temp max) data of the 21 GCM models in the period 2018-01-01 to 2099-12-31, for certain points. I made this script, for one model in one scenario //Dataset var dataset…
AnesG
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Chart monthly average NDVI values

I am hoping to obtain monthly averages for NDVI derived from Landsat data and then produce a line chart. I have succeeded in cloudmasking Landsat 8 and adding an NDVI band. Working with code suggested in another post I was able to create an image…
Lydia Keenan
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