Update README with usage instructions

README.md

@@ -13,3 +13,52 @@ license: mit
 
 # IndexRLApp
 Gradio app to generate remote sensing indices for properties defined by image-mask pairs.
+
+## How to Install
+IndexRL can be installed using the following two commands. However, it is recommended that you create a virtual environment prior to pip installation.
+
+```cmd
+pip install -r requirements.txt
+python app.py
+```
+
+## Upload a Dataset
+1. Set up the file structure of your dataset as follows.
+
+```
+.
+└── dataset/
+    ├── images/
+    │   ├── img1.npy
+    │   ├── img2.npy
+    │   └── ...
+    └── masks/
+        ├── mask1.npy
+        ├── mask2.npy
+        └── ...
+```
+
+2. Create a zip file for the dataset
+```cmd
+cd dataset
+zip -r dataset.zip *
+```
+
+3. Go to the `Datasets` tab on IndexRL, upload the created zip file, give a name for the dataset, and press the `Upload` button.
+
+![Datasets Tab](assets/images/datasets-tab.JPG "Datasets Tab")
+
+## Generate Remote Sensing Indices
+
+1. Go to the `Find Expressions` tab, select the dataset from the dropdown and click the `Find Expressions` button. With time, more and more expressions will be generated.
+
+
+2. Obtain the top 5 expressions from the `Best Expressions` box.
+
+3. Visualize and debug the expression search tree from the panels on the right.
+    - `Iteration` refers to each generated expression.
+    - `Tree Number` refers to the index of the expression tree that resulted in the selection of each symbol of the expression.
+    - `Expression Tree` displays the tree of symbols explored by the RL agent and the scores observed if each of those symbols were chosen. As you change the `Tree Number`, you can observe how the tree for the next choice of symbol.
+
+
+![Find Expressions Tab](assets/images/find-expressions-tab.JPG "Find Expressions Tab")