Hazard Layer Builder V1.0

From RiskScape Wiki
Jump to: navigation, search

Hazard Builder Tool

Hazard layers are a physical representation of a hazard event or scenario. Hazards are spatially represented as vector or raster data, displaying the area extent exposed to hazardous processes and/or the intensity of hazardous processes.

RiskScape software provides a "Hazard Builder Tool" that allows software users to upload and save ESRI Shapefiles (.shp), GeoTiffs (.tif), ASCII (asc.) or Text (txt.) files to the repository for use as hazard layers in RiskScape loss model scenarios.

Build a Hazard Layer

Step 1: Open the Hazard Builder Tool by clicking on the 'Hazard builder tool' icon on the menu bar.

Hazard builder tool icon on menu bar.

Step 2: Select a "Hazard type" from dropdown box. Check the "hazard intensity metric type" relevant to the hazard layer. You should have a representative vector or raster dataset for each selected hazard intensity metric type.

Select hazard type.
Select one or more hazard intensity metric type.

Step 3: In the 'hazard scenario' box, name the first hazard scenario then click "Add" to create additional hazard scenarios for the hazard layer. Use the dropdown box to browse to the vector or raster dataset representing the hazard scenarios.

Name hazard scenario then browse to, click and drag a vector or raster dataset into the scenario box.

Step 4: Click and drag the vector or raster dataset representing the hazard scenario into the scenario box.

Click and drag a vector or raster dataset into the scenario box.

In the dropdown box, select the hazard exposure type represented by the vector or raster dataset and click "Ok" to save the selection. When using a vector dataset (e.g. ESRI Shapefile (.shp)), the table field representing the hazard exposure type must be selected in the hazard exposure type must be selected.

If more than hazard intensity metric type is selected for the hazard layer, click and drag the vector or raster datasets representing each hazard intensity metric type into the hazard scenario box.

When all hazard scenarios are named and assigned vector or raster datasets click "Continue" to save scenarios as a hazard layer.

Select hazard exposure type representing the vector or raster dataset.

Optional Step 1: If no coordinate reference system (CRS) has been assigned to a vector or raster dataset, RiskScape will ask you to set the CRS by typing the reference number in the "Filter" field and selecting the representative coordinate reference system.

Set the coordinate reference system.

Step 5: Name the hazard layer and complete the relevant metadata fields. Click continue to save the hazard layer to local repository.

Hazard layer name and metadata fields.

Step 6: The saved hazard layer will appear in the 'Analysis' tab side panel and local repository.

Hazard icon on 'Analysis' tab side panel


Common problems that may be encountered when building a hazard layer.

Coordinate or Coordinate Reference System Problems

  • The ESRI shapefile or raster dataset has no defined coordinate reference system (this can be done in GIS software such as ArcGIS or QGIS).
  • The wrong coordinate system is assigned to the ESRI shapefile or raster dataset in the hazard builder tool.

Type Standard Problems

  • Hazard type is does not conform with RiskScape type standards.
  • Hazard exposure metric value does not conform with RiskScape type standards.
  • Hazard exposure metric value is mapped to wrong hazard exposure type standard.

Please ensure the hazard type and exposure information conforms with available Type standards for the RiskScape system.

Work arounds for known issues

  • ensure you are using a new name for the layer (not the same name as a module already in your workspace)
  • Avoid adding two hazard rasters in the same layer (create separate layers for them)
  • Ensure the 2nd to 5th Metadata fields are filled in. (the first field is redundant)
  • Sometimes the metadata "continue" button hangs (unselectable). you can nudge the process along by going back to the "name" field and adding a space at the end of the name you entered.
  • If something gets stuck at the "Hazard scenarios" ( add raster ) screen... it is quicker to close the window and start again.

Contact the RiskScape Helpdesk|