# Ordering of Sites in Triangular Lattices

**URL:** <https://itensor.discourse.group/t/ordering-of-sites-in-triangular-lattices/214>\
**Category:** DMRG and Numerical Methods\
**Tags:** mps, mpo\
**Created:** [June 17, 2022, 9:03am UTC](https://itensor.discourse.group/t/ordering-of-sites-in-triangular-lattices/214 "2022-06-17T09:03:52Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![pileyan\_1](https://yyz2.discourse-cdn.com/free1/user_avatar/itensor.discourse.group/pileyan_1/32/614_2.png) [@pileyan\_1](https://itensor.discourse.group/u/pileyan_1)\
**Post date:** [August 20, 2024, 2:48pm UTC](https://itensor.discourse.group/t/ordering-of-sites-in-triangular-lattices/214/5 "2024-08-20T14:48:41Z")

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Hi, Miles!

Is there a way to define custom lattices as easily ? Say, I want to define some triangular lattice bound to the square lattice. like the one on a screen , for example?

 ![lattice](https://global.discourse-cdn.com/free1/uploads/itensor/original/1X/6e09443efb1389df4c8ab8d651389ee46a5dbfb5.jpeg)

Best,  
Ian.

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