Questions tagged [google-earth-engine-javascript-api]
JavaScript client library for calling the Google Earth Engine API.
1,224
questions
0
votes
1
answer
18
views
Google Earth Engine Error: "ee.ImageCollection(...).subtract is not a function"
I'm getting the error 'subtract is not a function', when I try to substract two images from each other, and eventually get the difference in the NDVI. Both images have an NDVI band with an NDVI value. ...
0
votes
0
answers
13
views
Google Earth Engine - Code won't run past September 2020
I have some code which can be found here. It calculates an environmental stress index coral reef regions using Google Earth Engine.
I've tried to calculate some new data recently but I realised it won'...
- 515
0
votes
0
answers
16
views
Get the number of elements of the longest continuous sequence in Google Earth Engine
I have a List/Array
[1,0,1,1,1,1,1,0,0,0,0,0,0,0,0,1,0]
and I want to get the number of elements in a sequence of consecutive ones. It should be easy to implement using ordinary JavaScript, but I don'...
0
votes
0
answers
24
views
Imported SoilGrid layer only returns black on Google Earth Engine
I'm running this code to export a layer to google earth later. When I Import it it only return black as per the image, here's my code for reference :
var geometry =
ee.Geometry.Polygon(
...
0
votes
0
answers
16
views
Getting Error: Internal error. (Error code: 13) Earth Engine when exporting to my cloud bucket
I'm using this to export a region to my cloud bucket in Google Cloud
var convertedDataset = H2017static.select('constant').multiply(1000).int16()
var visualization = {
bands: "constant",
...
- 1
0
votes
1
answer
10
views
Can't upload to cloud bucket due to image Band
So I'm trying to export the HM map to my cloud bucket with this code:
var dataset = ee.Image("projects/sat-io/open-datasets/GHM/ghm_v15_2017_300_60land");
// Convert the floating-point band ...
- 1
0
votes
1
answer
10
views
ee.dictionary.get("gHM") not returning a mean value in server side
Here is my server side code:
app.post("/process-coordinates", (req, res) => {
//const coordinates = req.body.coordinates;
// Here you can perform any Earth Engine operation using the ...
- 1
0
votes
1
answer
16
views
Failing to clip and then export chirps rainfall data as CSV in Google Earth Engine
I wish to export daily rainfal data as CSV in Google Earth Engine for a 40 year period and then export the result as csv. However the code first fails to clip the data to the study area, and also it ...
0
votes
0
answers
17
views
Unable to Retrieve p-values in Google Earth Engine for Kendall's Correlation Analysis [duplicate]
This question has been asked previously: Significant Mann Kendall Tau.
I am using the ee.Reducer.kendallsCorrelation function within Google Earth Engine's JavaScript API to compute the Kendall's Tau-...
- 26
0
votes
1
answer
33
views
Landsat NDVI Anomaly Google Earth Engine
I am interested in calculating Monthly NDVI anomaly using Landsat. My objective will calculate long term monthly NDVI with all Landsat collection 2 sensors. In this simpler example I am only using ...
- 35
0
votes
0
answers
37
views
Resample v.s. Reduce Resolution in Google Earth Engine
When upscaling an image, Google Earth Engine provides two methods, Resampling and Reducing Resolution. I was wondering which one should I choose.
Take MODIS LAI data for an example, if I want to ...
- 53
0
votes
1
answer
19
views
Why are my clipped images not appearing in GEE?
This is my first time using GEE, and I'm still a bit of a beginner at JavaScript.
I'm using the NAIP dataset, and I'm trying to show two clipped images, one from 2012 and one from 2020 (the dataset ...
0
votes
1
answer
16
views
Extract, plot and export as a table a vegetation index time series from multipoint feature collection in Earth Engine
Reference is to a tread I posed years ago and was solved Extract pixel values from several bands of an image and export in a single table in Google Earth Engine
The challenge now is to create S2 NDVI ...
- 531
0
votes
0
answers
39
views
Using reducers in GEE to calculate mean monthly precipitation from hourly data
Using the Copernicus ERA5-Land Hourly dataset as an ImageCollection, I want to calculate average monthly precipitation data for 344 climate divisions in the US as a FeatureCollection. The climate ...
-1
votes
0
answers
17
views
Extract ET by masking features
I have asked the question before also. My code is for extracting ET for odisha using mask of water and build up. So I write the code. But the value before and after masking is same. I don't understand ...
-3
votes
0
answers
54
views
Landsat Collection 1 to Collection 2 migration
2
I want to create the LST in GEE for my region. How do I fix the Land surface temperature error in the light of 'Landsat Collection 1 to Collection 2 migration'? I am receiving minLST: 4583.687; ...
-1
votes
1
answer
35
views
ImageCollection (Error) ImageCollection.fromImages, argument 'images': Invalid type
I want to extract ET for Odisha region excluding waterbody and build up area. For that I calculate MNDWI and NDBI and create mask. But when I am applying it for extracting monthly ET the error is ...
0
votes
1
answer
48
views
Update FeatureCollection property values based on condition (without using ee.Algorithms.If)
I want to modify values in a specific feature collection. This collection comprises two properties: a land cover label and an elevation value. The objective is to replace features with label 13 and an ...
- 26
0
votes
1
answer
29
views
Median value within polygon of a data layer like NDVI- iterate over multiple polygons defined in map interface
I have a script below that will calculate the median NDVI for any polygon, store it, and chart it for export, over a range of dates. The script also performs some cloud masking prior to NDVI ...
- 21
0
votes
1
answer
22
views
Analyzing time series data stored in an image collection with GEE [closed]
I have a time series of an index called "slope" from 2002 to 2022 stored in a GEE Image Collection, one image per year.
I am analyzing only the negative values of the index. From that time ...
- 197
0
votes
0
answers
45
views
USGS 3DEP 1m issues with quality and Google Earth Engine
I have an issue when layering elevation data using hillshade with USGS 3DEP 1m DEM.
Some areas in the US I get artifact lines(lower quality?) on my hillshade layer, while other areas in the US I get ...
- 1
-1
votes
1
answer
29
views
Exporting an image collection as an asset
Is it possible to export each image from image collection as an asset? If yes how can I improvise this code?
// set cloud threshold
var cloud_thresh = 40;
// Cloud mask function
var ...
-1
votes
0
answers
33
views
Error: List (Error) Element.get: Parameter 'object' is required
I'm trying to calculate Rn however I'm getting an error.
var geometry = geometry;
Map.addLayer(geometry, {},"geometry");
Map.centerObject(geometry);
var countries = ee.FeatureCollection('...
0
votes
1
answer
25
views
LULC can't encode object in GEE for different sources
I am trying to get a LULC map for different periods. I am trying to check the differences year by year but I am getting the following error:
Random Forest Classification 2018: Layer error: Can't ...
- 25
0
votes
0
answers
20
views
Smoothed landsat LST time series with lineair regression function
I am trying to get a smoothed result in GEE from my LST time series but I get an error that the memory limit is exceeded.
How can I make my model more effective?
This is my code:
var LLST = require('...
- 1
-1
votes
1
answer
26
views
Standardised Precipitation-Evapotranspiration Index database export issues
I have tried to export it as GeoTIFF format as well as export as table. But the data of SPEI doesn't export at all. Why is this so? How can I export it? Here is the code given below.
// Retrieve the ...
0
votes
1
answer
39
views
Get water Area from Dynamic World
I plan to obtain the range and area of water bodies from Dynamic World products. But the water area I calculated in GEE does not match the obtained water range. In other words, the water range ...
- 3
0
votes
1
answer
73
views
Maps and graphs not rendered for NDVI-based variable using Google Earth Engine JavaScript API
I’ve written the code below (sorry if this is a lengthy block) to calculate ESPI which is annual mean minus monthly average standard deviation of NDVI. Though the code ran without any problem, maps ...
- 192
0
votes
1
answer
31
views
Mapping, Iteration and conditional selection on featureCollection in GEE
I want to make a function (possibly using Currying method) in GEE to do a modification of my featureCollection. In the code bellow I wrote a function_infunction to add a new property "label" ...
0
votes
0
answers
12
views
Getting error in GEE while computing PAR from ERA5 insolation data
The error states:
- Scaled Cumulative Max Insolation Bands: Tile error: Expected a homogeneous image collection, but an image with incompatible bands was encountered:
First image type: 1 bands ([...
0
votes
2
answers
23
views
Error "Image.clipToBoundsAndScale: Projection error when constructing output region: Can't transform (-180.0,-90.0)" When trying to export to drive
I have the following code in the Google Earth Engine. This code divides the earth into parts and then exports them to Google Drive:
var dataset = ee.Image("COPERNICUS/Landcover/100m/Proba-V-C3/...
-2
votes
1
answer
37
views
SMAP time series analysis error in code
Input are:
NASA/SMAP/SPL4SMGP/007
NASA/GPM_L3/IMERG_MONTHLY_V06
When I try to compute the time series I get the following error:
ImageCollection (Error)
reduce.mean: Error in map(ID=20200601_0130):
...
- 1
0
votes
1
answer
53
views
ERROR while making a LULC map classification in Google Earth Engine
I am relatively new to utilizing the Google Earth Engine (GEE) platform, although I possess some experience in generating Land Use and Land Cover (LULC) maps using GIS software. Recently, I ...
0
votes
1
answer
44
views
Exporting Large Classification Image on GEE
I am new to GEE. I am trying to export a large land cover classification map on GEE, derived using Landsat 5 data through random forest classification. The classified map has 7 classes represented ...
- 1
0
votes
1
answer
114
views
Downloading daily precipitation and temperature data from ERA5 using Google Earth Engine JavaScript API
I tried using the code below to download the data. I have doubts about the correctness of the code.
Can you help me correct it?
I encountered errors, which may be due to the large size of the dataset. ...
- 1
1
vote
1
answer
36
views
Earth Engine GFS: Calculating Hourly Precipitation
Any tutorial on the GFS model in Earth Engine describes filtering out the 6-hour precipitation intervals, to avoid double-counting the cumulative precipitation band. However, I cannot square the ...
0
votes
1
answer
29
views
Use the output of ui.Select widget as an argument for filtering an image collection (Earh Engine code editor)
I am trying to filter.Bound an image collection (in this example Dynamic World) with the 1st level administrative boundaries of Nigeria (I am using here GAUL by FAO) by using the ui.Select widget.
...
- 531
0
votes
1
answer
34
views
Extracting drought values below -1 for at least three consecutive months
I am a novice with programming, and I can't seem to get around this issue, or if I'm even on the right track. The goal is to model land use change after periods of drought using precipitation data and ...
- 1
0
votes
0
answers
30
views
Ingesting raster dataset to Google Earth Engine using manifest.json
I am preparing a pipeline to injest raster dataset (GRACE-FO data) to the Google Earth Engine (GEE) platform. The dataset are already uploaded to google cloud storage bucket (gs://gee-ingest-); and I ...
- 510
0
votes
1
answer
49
views
Calculating intersect area in Google Earth Engine
I Have the following code in Google Earth Engine:
// Add a 500 meret buffer to the gridpoints
var gridpointsBuffered = gridpoints.map(function(feature) {
return feature.buffer(500); // 500 meter ...
0
votes
1
answer
37
views
Dictionary.get: Dictionary does not contain key: EVI
I'm trying to write a script that calculates and retrieve EVI values from Sentinel-2 MSI in GEE then performs zonal statistics using points and export it .csv. I've written similar loop scripts for ...
0
votes
1
answer
29
views
GEE: Adding two properties into a new property
I want to add the values of two properties A and B (both of type string) into a new property A_B to every feature inside the featureCollection.
I tried ee.Feature.get() and ee.Feature.getString() to ...
0
votes
0
answers
16
views
Extracting seasonal maximum from smoothed MODIS NDVI time series in Google Earth Engine
I am trying to extract the seasonal maximum NDVI value (01st June to 31st October) from 2000 to 2023, i.e., total 24 NDVI images. For that I have imported the MOD13A2 datasets in the Google Earth ...
- 21
0
votes
0
answers
41
views
Google Earth Engine exported TIFF file cell size in ArcGIS
I set the scale of my image to 10 when exporting from GEE. When I open the raster in ArcGIS Pro I get a cell size of 8.983152841195213E-05 instead of 10. Is there any way to make it 10 x 10 cell size ...
- 33
1
vote
1
answer
55
views
Visualize the color of the point features from the variables that have been created
I have a 24 feature collection consisting of several point features. I've created color variables previously to define the graph and visualize the points. However, I was hampered by the problem that ...
0
votes
0
answers
28
views
Selecting image labels from list using Google Earth Engine JavaScript API
I have created an image of forest patches, where each patch is assigned a unique label. Then, using various points from a table, I created buffers to select the complete patches surrounding each point....
- 1
0
votes
0
answers
19
views
How to export all Latitude - Longitude values of each pixel included in the area covered by geometry at specific resolution? - Google Earth Engine
I am able to add a band of lat - lon in my image in google EE with the code:
var imgwithlonlat = meanImage.addBands(ee.Image.pixelLonLat());
Now I want to store all these values in a list and export ...
- 1
0
votes
1
answer
37
views
Earth Engine Zonal Stats export table error message
I am trying to calculate zonal statistics of vegetation indices (Sentinel 2) for each week in 2023 and export the results in a wide table format (.csv). For the specific region, I am using points data....
0
votes
0
answers
27
views
Extracting forest patches using square Kernels around shapefile point data in Google Earth Engine
I have an image representing global forest cover named minArea. Pixels are valued 1 or 0 (tree cover or no tree cover).
I also have a shapefile imported through my assets of XY coordinate data. ...
- 41
0
votes
1
answer
39
views
Converting the output of a .map function into an image collection in Google Earth Engine using JavaScript
I am trying to retrieve monthly Sentinel-2 band data using zonal statistics (mean) and point buffer for further analysis.
I have created monthly median composites from January to December of 2017 ...
