Welcome to WEAP's Website WEAP
WEAP is an initiative of the Stockholm Environment Institute.


About WEAP

Home
Why WEAP?
Features
What's New?
Sample Screens
Demonstration
Publications
History and Credits

Using WEAP
Download
Licensing
User Guide
Tutorial
Videos

User Forum
Discussions
Members List
Edit Profile

Additional Support
Training
University Courses
Collaboration

About Us
SEI-US Water Resources Program
Please Contact Us


Environmental News
LEAP
Interested in Energy?
Read about LEAP: SEI's software for energy planning.
   

User Forum

All Topics | Topic "Calculate results in one section of model only"
Log in to post new messages or reply to existing messages.
 
Author Message
Mr. Juan Sebastian Ossa Moreno

Subject: Calculate results in one section of model only   
Posted: 11/24/2017 Viewed: 1209 times
Hello

Am calibrating a model through WEAP API. I change some parameters, run the model and then export results.

I will calibrate the whole catchment but i am analysing separately all sub-catchments with a flow gauge. Even if am focusing on one sub-catchment only at a time (all other parameters do not change), WEAP recalculates the whole model. I thought that if i could tell WEAP not to recalculate the whole model, but only the subcatchment am analysing i would save a lot of time. Even if it is just 1 or 2 seconds per each calculation, this means hours when iterating this process +1000 times.

Does anyone know if i can set WEAP to recalculate one section of the model only?

Regards

Juan
Ms. Stephanie Galaitsi

Subject: Re: Calculate results in one section of model only   
Posted: 11/27/2017 Viewed: 1204 times
Hi Juan,

Here's what I would recommend doing:

Go to the WEAP menu "Schematic" and select the option Set "Active in Current Accounts." Here you can turn off all catchments, demand sites, reservoirs, return flows, and transmission links in your model. Turn off everything, and then turn on just the information for the area you're calibrating. Always start calibration with your most upstream gauge. As you move downstream, the elements for the upstream gauges should be left on, since they are all contributing to or withdrawing water from the flow at the downstream gauge.

Note that this option turns off calculations just for current accounts, but this will carry through the reference and other scenarios UNLESS you have an element (such as a reservior) that begins operation in a scenario. In that case, that element will still activate. You can turn off scenarios in Area/Manage Scenarios and unchecking the box "show results for this scenario." Turning off the scenarios will speed up the model a lot, and of course they are unnecessary when running a historic model - you only need your Current Accounts and Reference data.
Mr. Juan Sebastian Ossa Moreno

Subject: Re: Calculate results in one section of model only   
Posted: 11/27/2017 Viewed: 1147 times
Hi Stephanie
Thanks a lot for your answer!
Topic "Calculate results in one section of model only"