I am plotting raster maps using QwtPlotSpectrogram which often have large values for coordinate systems.

For instance my map has X coord starting at 417404 and Y coordinate starting at 2429566.
However the Y-axis displays large values as 2.43e+06 but I would like to show the full number, not automatically use a scientific notation.

I looked in qwt_scale_draw.cpp code but can't find it. Maybe its feature and I am overlooking this