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 (YouTube)

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
Not acting like themselves: Antidepressants in environment alter crayf...
Expose crayfish to antidepressants, and they become more outgoing -- but that might not be such a positive thing for the...

Use of PFAS in cosmetics 'widespread,' new study finds
Many cosmetics sold in the United States and Canada likely contain high levels of per- and polyfluoroalkyl substances (P...

Baltic herring larvae appear earlier and grow faster due to climate ch...
Conditions during Baltic herring spawning may have cascading effects on the whole Baltic ecosystem.
Source: Science Daily
LEAP
Interested in Energy?
Read about LEAP: SEI's software for energy planning.

Link WEAP and LEAP for combined Water-Energy planning.
Watch a video demo!
   

User Forum

All Topics | Topic "New Version of WEAP (2019.2)"
Log in to post new messages or reply to existing messages.
 
Author Message
Mr. Jack Sieber

Subject: New Version of WEAP (2019.2)   
Posted: 8/1/2019 Viewed: 2502 times
A new version of WEAP is now available, with several new features and bug fixes. It is recommended for all users to get the update. As always, this new version is backwards compatible with data sets developed in earlier versions of WEAP.

If you have a problem with the automatic update, you can download the full installation from http://www.weap21.org/Download There is no need to uninstall your existing version first.

What's New:

Overall, WEAP is now much faster to calculate and display results, and results files are much smaller.

CALCULATIONS:

- Much faster to calculate large models: The XA solver is now included with WEAP, and free for everyone to use until 15 July 2020. For larger models, this solver is up to 10 times faster and more robust than the other solver included with WEAP (lpsolve). To choose this solver, go to the Menu: General, Solver, XA. Keep in mind that, due to the nature of the complex numerical calculations performed by MILP solvers, each solver will yield slightly different results. This means that WEAP results can vary slightly depending on the solver used. For more information about XA, see http://www.sunsetsoft.com
- Much smaller results files (as much as 40% smaller)

RESULTS VIEW:

- Much faster to display charts and tables in the Results View, especially for very large models, up to 10 times faster.
- Scenario comparison in results ("Relative to"): Can choose Difference (A-B), Index (A/B) or Percent (A-B)/B.
- Result names changed: For Soil Moisture and Simplified Coefficient Methods: "Total Annual Yield[kg]" to "Annual Crop Production[kg]" and "Total Market Value" to "Annual Market Value"; for MABIA: "Crop Yield[kg]" to "Annual Crop Production[kg]" and "Market Value" to "Annual Market Value"; for PGM: "Annual Production[kg]" to "Annual Crop Production[kg]"

CLIMATE DATA FOR CATCHMENT DELINEATION:

- Catchment Delineation climate: Can now handle climate NetCDF files of any size; faster reading large files.
- Much faster processing climate data from very large (larger than 1 GB) NetCDF files, up to 100 times faster.
- Handle Daymet climate files that do not include December 31 in leap years. The ReadFromFile expressions will fill this gap by interpolating the December 30 and January 1 values.

API:

- WEAP.ZoomLevel: Set or get the zoom level of the map in the Schematic View. ZoomLevel = 1 corresponds to the full area extent; ZoomLevel = 2 is zoomed in by a factor of two, such that the width and height shown are half of the full area extent.
- WEAP.CreateNode: Specify which river (or not) on which to place the new node. If the optional RiverName parameter is given, then the new node will be placed on that river. Use RiverName = "N/A" to force the node to not be placed on a river, e.g., to make the new reservoir a "Local" reservoir, e.g., Set WestReservoir = WEAP.CreateNode("Reservoir", -71.88, 42, "West Reservoir", "West;Reservoir", false, 99, "N/A")
- WEAP.ScreenUpdating: WEAP.ScreenUpdating = True/False: Turn on or off updates to the screen in the Schematic or Data View. Useful when using CreateNode and CreateLink to build a large WEAP model, or changing many data expressions at once -- it will be much faster if you set - ScreenUpdating = FALSE before calling CreateNode and CreateLink. ScreenUpdating will automatically be set to TRUE when opening an area.
- Faster: Deleting multiple objects on the Schematic, creating many objects and links via the API (WEAP.CreateNode, WEAP.CreateLink)

Jack Sieber
WEAP Developer
Stockholm Environment Institute
Topic "New Version of WEAP (2019.2)"