All Questions
Tagged with google-earth-engine time-series
207
questions
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Trying to export a time series of EVI values for a large asset in Google Earth Engine
I'm trying to export a time series of EVI data for a large asset containing 40,000 points. I am using the MODIS data. The code that I've written works when I extract data for 5 points, but it's not ...
- 1
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24
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LST in GEE: Error generating chart: No features contain non-null values of "system:time_start"
The error:
Error generating chart: No features contain non-null values of "system:time_start"
appears when I try to generate the LST graph in GEE for the selected period. I tried to return ...
- 109
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28
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Google Earth Engine empty list issue
I am intended to apply moving average function on a list of area values but the code returns empty list? Anyone has any idea?
the code link: https://code.earthengine.google.com/...
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51
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Error "No features contain non-null values of system:time_start" when charting time series in Google Earth Engine
I want to create a chart showing the yearly average Chlorophyll a over a given time span. However I have been getting the following error when trying to create a time series.
After looking at this ...
- 51
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26
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Create an array of band names where the pixel value is 1 in Google Earth Engine
I have an image in GEE with 20 bands, each corresponding to one year. Indeed, I have a time series. Each band can have values 1, 0, or -1. Value 1 means a specific event starts, and value -1 means the ...
- 193
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14
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Adding an extra series to chart Google Earth Engine
I need to perform the same analysis for different geometry points and plot it. Actually I have the plot for each point and when I click on the map creates a chart for the point where I clicked it but ...
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25
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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 ...
- 193
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30
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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('...
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1
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68
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Eliminating missing pixels in NDVI time series analysis by temporal gap filling with linear interpolation to get a smooth result
The code is running correctly but it doesn't give me a smoothened result. Anyone who can help me out?
var startDate = '2015-01-01';
var endDate = '2023-12-31';
var images = sentinel.filter(ee.Filter....
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1
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31
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Trying to create mask to eliminate false NDVI numbers in GEE time series analysis using Sentinel data
It keeps given me the error that ndvi.gte is not a function, I shared my code below:
var images = sentinel.filter(ee.Filter.date(startDate,endDate)).filterBounds(geometry)
print(images);
var ndvi = ...
- 1
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1
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76
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Unable to compute graph in Google Earth Engine when trying to compute mODIS NDVI Time series analysis of a small region in Crete, Greece
I want to make a simple time series analysis of the past 8 years using MODIS data but I'm unable to compute the graph as I get the following message:
Error generating chart: Collection.first: ...
- 1
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0
answers
20
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Why the value of MCD15A3H LAI is relatively low compared to the actual value?
I want to obtain the MCD15A3H LAI long time series of winter wheat samples and apply Savitzky Golay smoothing filtering to them. However, during the rising period of winter wheat, the value of LAI is ...
- 1
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78
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Applying a Savitzky-Golay filter using OEEL with Google API
I've been writing a code based on instructions from Geo for Good 2022: Time Series Processing Using Google Earth Engine- https://www.youtube.com/watch?v=ncb5_zbvnaU.
Specifically, after creating a ...
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1
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69
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Trouble Extracting Fitted Values with Year Information in Landtrendr using Javascript - 'index.toUpperCase' Error
I'm back working with Landtrendr in Javascript and have had some problems. I'm trying to separate the fitted row from the Landtrendr band and export it to an image, so I have year bands of fitted ...
- 3
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38
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How to save the error: Array: No numbers in 'values', must provide a type
I'm a beginner of coding and GEE.
I'm trying to extract the NIR and Red band time series data of each pixel in the survey area with cloud masked.
However, when applying the code below I used to do ...
