[gdal-dev] what could be 7th parameter(scale factor) of "+towgs84" for this datum shift

[Yasin Selçuk Berber]

hi. i have some data, with a special datum using a special ellipsoid. i
need to reproject this data in WGS84 datum. major and minor axis are known.
other than that, first 6 of its +towgs84 parameters are also known:  0,0,0
for translation and 0,0,0 for rotation.

In this situation, is it correct that what i need is: an ellipsoid
"warping" (datum shift) ? if yes, should i enter scale factor as "zero" for
a datum shift ? (all seven parameters "zero" ?)
Thanks.
-- 
Yasin
"Bismillah, her hayrın başıdır."
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