[Proj] Getting X Y in a .map OZI calibrated map

[Jorge Ferrando]

I have some .map OZI calibrated maps. From those .map, I can get some
calibration points (x y in the jpeg picture + lon lat in WGS84).

MMPXY,1,142,142
MMPXY,2,5217,142
MMPXY,3,5217,3422
MMPXY,4,142,3422
MMPLL,1,  -0.269639,  39.626293
MMPLL,2,  -0.186306,  39.626293
MMPLL,3,  -0.186306,  39.584626
MMPLL,4,  -0.269639,  39.584626

With that I build a coordinates file

-0.269639  39.626293 (142,142)
-0.186306  39.626293 (5217,142)
-0.186306  39.584626 (5217,3422)
-0.269639  39.584626 (142,3422)