Overview

Meteosat Images are generally imported as images in <filename>.png format. The Meteosat images constitute a time series of png images, that are geo-referenced by means of a specific world file. Each image needs its own world file, which in case of PNG carries the extension <filename>.pgw.

Import of images in another format, such as JPEG is also possible. The corresponding world file for a JPEG file has the extension <filename>.jpg.
The images are imported via a common time series import, for which a specific image parameter needs to be specified in a parameterGroup via the parameter id image.

DateTime stamp

For FEWS to know the datetime of the image, the filename should contain a datetimestamp in one of the following formats:

  • yyyyMMddHHmm
  • yyyyMMddHH
  • yyyyMMdd.HHmm

Configuration (Example)

The regional parameters XML file must have a special parameter for the images that are imported.

Parameter.xml
<parameterGroup id="image">
  <parameterType>instantaneous</parameterType>
  <unit>-</unit>
  <valueResolution>8</valueResolution>
  <parameter id="image">
  <shortName>image</shortName>
  </parameter>
</parameterGroup>

The value resolution indicates the resolution of the values of the pixels (grey tones) in the Meteosat images. In this case 8 grey tones are resampled into a single grey tone for storage space reductions. In the module for the timemeseries import run for a Meteosat image the import is then configured as follows:

ImportGrayScale.xml
<import>
  <general>
   <importType>GrayScaleImage</importType>
   <folder>$REGION_HOME$/Import/MeteoSat</folder>
            <idMapId>IdImportMeteosat</idMapId>
   </general>

  <timeSeriesSet>
   <moduleInstanceId>ImportMeteosat</moduleInstanceId>
   <valueType>grid</valueType>
   <parameterId>image</parameterId>
   <locationId>meteosat</locationId>
   <timeSeriesType>external historical</timeSeriesType>
   <timeStep unit="minute" multiplier="15"/>
   <readWriteMode>add originals</readWriteMode>
   <synchLevel>4</synchLevel>
   <expiryTime unit="day" multiplier="750"/>
  </timeSeriesSet>
 </import>
idmap.xml
<map internalLocation=" ... " externalParameter="image" internalParameter=" ... " externalLocation="image"></map>

The goereferenced image can then be displayed in the grid display.

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