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 met_data_import.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 mil.army.usace.hec.vortex import Options

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 = Options.create()
options.add('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-0.10.11"
set "PATH=%VORTEX_HOME%\bin;%VORTEX_HOME%\bin\gdal;%PATH%"
set "GDAL_DRIVER_PATH=%VORTEX_HOME%\bin\gdal\gdalplugins"
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!