FAQ/ Maximum size of the calculation area

When I tried to create a very large calculation area, I got the following error message.

The maximum number of meshes has been exceeded.

Please tell me the cause and countermeasures.

Figure: Calculation area to create (all of Southeast Asia)

response

[Calculation area] The number of cells is capped. The upper limit is 10,000 x 10,000.

In response to requests, we have added the ability to change this upper limit. Version. This feature is available from 3.4.7.

You can change the upper limit in the following ways:

1. Open the DioVISTA configuration file %LocalAppData%\Hitachi\DioVISTA\floodSim.xml.

   Note

   %LocalAppData% is an environment variable. If you paste it into the address bar of Explorer, it will automatically replace C:\Users(username)\AppData\Local, etc.

2. element configuration.calcDomain.maxCells.

   • <maxCells>10000</maxCells> means 10000 x 10000.
   • Minimum: 10000, Maximum: 100000, Default value: 10000

    <calcDomain>
        <landSeaThreshold>0</landSeaThreshold>
        <seaLessThan>false</seaLessThan>
        <maxCells>10000</maxCells>
    </calcDomain>

Related item

• Operation Manual/ Project/ Calculation Area
• Technical Reference/ Input/Output Function/ Terrain, roughness and embankment import function/ NetCDF format

---

Last update: 2023-03-20