How to prepare LULC data of particular study area through NDVI spectral ratio method using google earth engine platform?? Also please mention otherways if any...
You can utilize the Landsat satellite images (30 meter pixel resolution) to obtain LU/LC data. This link would help in getting an idea on howto proceed [https://www.e-education.psu.edu/geog160/node/1960]. In addition, you can freely download the MODIS LU/LC data (MCD12Q1) which is a yearly LU/LC data with 500m pixel resolution [https://lpdaac.usgs.gov/products/mcd12q1v006/]. There is another dateset from European Space Agency (ESA) that available from 1992 to present with pixel resolution around 300m [https://cds.climate.copernicus.eu/cdsapp#!/dataset/satellite-land-cover?tab=form]. Good Luck and Please let me know if you need anything else : )