Hi all, I have a project where we need to interface with esp-r at a programmatic level - i.e. we need to invoke esp-r from another application that we are developing, and we don't need the esp-r gui. Ideally, we want a way of getting teh data into esp-r, running the simulation, and the getting teh data out again, all without any file writing. Are there any api's that might simplify this task - I realise the software is open source, but delving into the core code is quite daunting. I am wondering if anyone has created a higher level api. If not, then maybe someone could point us to the righ place to start looking at the esp-r code. Regards Patrick :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: Dr Patrick Janssen Department of Architecture National University of Singapore <a href="http://patrick.janssen.name">http://patrick.janssen.name</a> <a href="mailto:patrick@janssen.name">patrick@janssen.name</a> ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::