README.md

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title: README
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**Space : GEE Calculator**

1. Sentinel Dataset Selection:
The app starts by presenting a title and then prompts the user to select a dataset category from a list. These categories are fetched dynamically from the data dictionary. After selecting a category, the user is presented with a second dropdown to choose a specific dataset ID within that category. Once the user makes a selection, the app displays the full path of the selected category and dataset, showing the specific dataset ID.

2. Earth Engine Index Calculator:
After the dataset selection, the app transitions to a section dedicated to calculating Earth Engine indices. Users can choose from predefined indices such as NDVI, NDWI, or Average NO₂, or enter a custom formula for calculation. When a predefined index is selected, the corresponding formula is displayed to guide the user. NDVI and NDWI formulas involve specific band calculations from Sentinel imagery, and the Average NO₂ index is based on the NO₂ band.

If the user selects the "Custom Formula" option, they are prompted to enter a formula in a text input field, where they can define their own band-based formula for calculations. If the custom formula field is left empty, a warning is displayed, prompting the user to enter a valid formula.

The app is designed to help users easily interact with Sentinel data and perform essential remote sensing calculations without needing to write complex code, making it accessible to a wide range of users from researchers to environmental analysts.