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Hello

Is it possible to use latitude (degrees), longitude (degrees), z (m) data as bathymetric data to make a geometric file for telemac2d? Or it must be converted to Cartesian x(m),y(m),z?

Appreciate any reply

Thanks

Hello,

Telemac-2D expects cartesian coordinates and in spherical coordinates option expects a Mercator projection. However if you have a mesh built with longitude and latitude, it is possible to do the Mercator projection in subroutine CORRXY (library bief). This subroutine is called just after reading the coordinates in the geometry file, so any change of x and y here will be taken into account in the rest of the computation.

With best regards,

Jean-Michel Hervouet

Thank you very much for your reply

I was wondering if the data covers two UTM zones (e.g., 29U and 30U),
is it still possible to use that subroutine? Would be any complication?

regards

REZA

Hi Reza,

Projecting a xyz pointset from Latlong to UTM is trivial with BlueKenue.

BlueKenue supports LatLong,UTM,MTM,Albers,Lambert and Polar Stereo

Martin