# Questions tagged [vci]

The Vegetation Condition Index (VCI) compares the current NDVI to the range of values observed in the same period in previous years

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### Calculating the vegetation condition indices over a stacked vegetation indices in Google Earth Engine

I am trying to calculate the vegetation condition index (VCI) over a period of years in the google earth engine platform. I have taken the image collection of MODIS 1km NDVI data (MOD13A2) from 2000 ...
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### How to calculate VCI index in GEE?

I would like to calculate the VCI index from MODIS/006/MCD43A4 NDVI over the months July and August for the period 2002-2017. I have the following code, but I do not know how to continue. var ...
• 186
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### Does Google Earth Engine (GEE) compute Vegetation Condition Index (VCI) time series correctly?

The formula to compute VCI from long term dataset is VCI= (NDVI_current-NDVI_min)/(NDVI_max-NDVI_min) * 100, refer to Drought monitoring using the Vegetation Condition Index (VCI) Map.centerObject(...
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### Using Vegetation Condition Index Function in Google Earth Engine JavaScript API

I created a code in Google Earth Engine to calculate monthly VCI. The official equation for VCI is the following: VCI = 100*(NDVI - NDVImin)/(NDVImax - NDVImin) My problem is that I don't know how to ...
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### Process large ROI in GEE

I am calculating the VCI for Europe, but the ROI is too large for a single run in GEE. How can I divide it and process it in chunks so that when downloaded they fit into a single image/composite? var ...
• 105
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### GEE Tile error: Expected a homogeneous image collection, but an image with an incompatible band was encountered when calculating VCI from Landsat

I'm trying to calculate the VCI (NDVI - minNDVI)/(maxNDVI-minNDVI) for a collection of landsat 5 merged with a collection of landsat 8 because I will need to do this for different periods covering ...
• 105
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