From ace80ae1c8f22fc0657859a4904c27f593089873 Mon Sep 17 00:00:00 2001
From: Chris Langfield <34426450+chris-langfield@users.noreply.github.com>
Date: Tue, 21 May 2024 13:14:00 -0400
Subject: [PATCH] Update README.md

---
 README.md | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/README.md b/README.md
index 7fb99c9..2e47353 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,29 @@ hexshow(h)
 ```
 ![Screenshot 2024-05-21 at 1 06 04 PM](https://github.com/chris-langfield/hexfft/assets/34426450/92d11a97-8b64-4d3f-9ac9-c612aa4b5437)
 
+#### Perform FFT for rectangularly or hexagonally periodic signals
+
+```python
+from hexfft import fft, ifft
+
+X = fft(h)
+X_hx = fft(h, periodicity="hex")
+```
+
+#### Operate on a 3D stack
+
+```python
+from hexfft import FFT
+
+shape = (32, 32)
+
+fftobj = FFT(shape, periodicity="hex") # or "rect"
+X = fftobj.forward(x)
+xx = fftobj.inverse(X)
+
+...
+```
+
 ## Install
 
 ```