Vortex normalizer scripting example

The Vortex API is written in java allowing access via jython scripting. The following example demonstrates importing a grib file via jython script.

This batch script example uses two scripting files:

1. A *.py file that contains the scripting logic
2. A *.bat file that sets the environment and executes the python script

In addition to the script files, two jars were used:

1. A version of vortex
2. A version of jython

The python script normalize.py imports a grib file to a dss by interacting with the Vortex API:

from mil.army.usace.hec.vortex.math import Normalizer
from mil.army.usace.hec.vortex.io import DataReader

from java.time import ZonedDateTime
from java.time import LocalDateTime
from java.time import ZoneId
from java.time import Duration

source = 'C:/Temp/qpe.dss'
normals = 'C:/Temp/prism.dss'

sourceGrids = DataReader.getVariables(source)
normalGrids = DataReader.getVariables(normals)

start = ZonedDateTime.of(LocalDateTime.of(2017, 1, 1, 0, 0), ZoneId.of("UTC"))
end = ZonedDateTime.of(LocalDateTime.of(2017, 1, 3, 0, 0), ZoneId.of("UTC"))
interval = Duration.ofDays(1)

destination = 'C:/Temp/normalized.dss'

options = {'partF': 'my normalized grids'}

normalizer = Normalizer.builder() \
    .startTime(start) \
    .endTime(end) \
    .interval(interval) \
    .pathToSource(source) \
    .sourceVariables(sourceGrids) \
    .pathToNormals(normals) \
    .normalsVariables(normalGrids) \
    .destination(destination) \
    .writeOptions(options) \
    .build()

normalizer.normalize()

The batch script normalize.bat sets the environment and executes the script:

set "VORTEX_HOME=C:\Programs\vortex-0.10.16"
set "PATH=%VORTEX_HOME%\bin;%VORTEX_HOME%\bin\gdal;%PATH%"
set "GDAL_DATA=%VORTEX_HOME%\bin\gdal\gdal-data"
set "PROJ_LIB=%VORTEX_HOME%\bin\gdal\projlib"
set "CLASSPATH=%VORTEX_HOME%\lib\*"
C:\Programs\jython2.7.2\bin\jython.exe -J-Xmx2g -Djava.library.path=%VORTEX_HOME%\bin;%VORTEX_HOME%\bin\gdal normalize.py

This example can be found on github.

That's all there is to it. Happy scripting!