WCS-T doesn't support CInt16

[Dimitar Misev]

While importing Sentinel 1 SLC data with wcst_import.sh:

Service Call: http://localhost:8080/rasdaman/ows?service=WCS&version=2.0.1&request=InsertCoverage&coverageRef=file:///tmp/ce86a214_1004_4b81_875a_6c7813ae6727.gml&tiling=ALIGNED [0:1023, 0:1023]&pixelDataType=CInt16&useId=existing
Error Code: InvalidParameterValue
Error Text: <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ows:ExceptionReport version="2.0.0"
    xsd:schemaLocation="http://www.opengis.net/ows/2.0 http://schemas.opengis.net/ows/2.0/owsExceptionReport.xsd"
    xmlns:ows="http://www.opengis.net/ows/2.0" xmlns:xsd="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink">
    <ows:Exception exceptionCode="InvalidParameterValue">
        <ows:ExceptionText>Pixel data type CInt16 unknown.</ows:ExceptionText>
    </ows:Exception>

</ows:ExceptionReport>

Attached is a sample tiff file.

Rasdaman supports only 64 and 128 bit complex numbers (floating point only). We should extend this, best to match the GDAL complex number types (we are missing CInt16 and CInt32): ​http://www.gdal.org/gdal_8h.html#a22e22ce0a55036a96f652765793fb7a4

[Vlad Merticariu]

We could map that to r_Complex, but the problem is that r_Complex is 64 bit (which is the smallest complex type rasdaman supports).

Gdal supports from 16 to 64 bit complex types: ​http://www.gdal.org/gdal_8h.html#a22e22ce0a55036a96f652765793fb7a4

[Dimitar Misev]

I guess it's time to add more complex types in rasdaman?

[Peter Baumann]

a valid request indeed - Sentinel is important. Hope we can find resources - maybe someone from the community would like embark on this…