Animation of DSM2 Outputs in ArcMap

Siqing LiuBay Delta Office

Department of Water ResourcesSiqing.liu@water.ca.gov

2/17/2015

Overview• Background• DSM2 Output Files • Animation in ArcMap• Post-processing DSM2 output for animation• Demonstration

Background

• Using ArcMap to visualize DSM2 outputs has not been explored thoroughly

• Animation can help understand Delta hydrodynamics

• Animation may make it easier to check model results and compare different scenarios

• Animation may present more information than tables and static plots can do

DSM2 Outputs

• DSS File

• HDF5 File

The U.S. Army Corps of Engineers' Hydrologic Engineering Center Data Storage System (HEC-DSS)

database system designed to efficiently store and retrieve scientific data that is typically sequential

Hierarchical Data Format (HDF) designed to store and organize large amounts of numerical data. Originally developed at the National Center for Supercomputing Applications

DSM2 outputs, ContData in HEC-DSS database files can be graphed, tabulated, edited and manipulated with HEC-DSSVue

HDFView is a visual tool for browsing and editing HDF5 files

DSM2 output, Cont

Animation in ArcMap

• Data through time can be animated in ArcMap to understand how data changes with time and space

• All three primary dataset types can be animated

Feature classes Tables Rasters

Animation in ArcMap, Cont

Common data sources supported by ArcGIS for animation

• ESRI Shapefiles• Geodatabases• netCDF multidimensional and time series

datasets

ESRI Shapefiles

• A nontopological format for storing the geometric location and attribute information of geographic features for geographic information system (GIS) software

• Geographic features in a shapefile can be represented by points, lines, or polygons (areas).

ArcGIS Geodatabase• Short for a geographic database.• Three primary dataset types

Feature classes

Feature classes Tables Raster datasets

Multidimensional Data

Data cube (3D) or hypercube (4D,5D…)

• Temperature of a location varying with time

• Temperature at a locationvarying with time and altitude

• E.g. for every x, y, z… you can store multiple variables with multiple time steps XY

TZ

XY

T

NetCDF• An array based data structure for storing

multidimensional data; Interoperable with HDF5.• N-dimensional coordinates systems– X coordinate (e.g. longitude)– Y coordinate (e.g. latitude)– Z coordinate (e.g. altitude)– Time dimension– … other dimensions

• Variables – support for multiple variables– Temperature, humidity, pressure, salinity, etc

• Geometry – implicit or explicit– Regular grid (implicit)– Irregular grid– Points

X

Z

T

Y

NetCDF in ArcGIS• NetCDF data is accessed as

• Raster• Feature• Table

• Direct read• Exports GIS data to netCDF

NetCDF Tools

Toolbox: Multidimension Tools• Make NetCDF Raster Layer• Make NetCDF Feature Layer• Make NetCDF Table View• Raster to NetCDF• Feature to NetCDF• Table to NetCDF• Select by Dimension

Post-processing DSM2 outputs for animation

DSM2 DSS / HDF5

Timeseries data in .CSV file

.DBF file

Geodatabase

Store DSM2 output to ArcGIS Geodatabase

DSM2 HDF5 Timeseries data in .CSV file

ArcGIS Raster File ASCII file

Store DSM2 output to NetCDF file

ArcGIS Shapefile

NetCDF File

Post-processing DSM2 output for animation, cont

Demonstration

• Flow

• EC

• EC Fingerprint

• Volumetric Fingerprint

• Velocity

Demo

Demo

Demo Demo

Demo

Demo

Demo

• Stage DemoDemo

Questions?