<span style='font-family:Verdana'><span style='font-size:12px'><span style="font-family:verdana;"><span style="font-size: 12px;">Hello.<br />
<br />
I have a vectorized version of a map from the <a href="http://www.openstreetmap.org/?lat=-23.845&lon=-45.343&zoom=11&layers=M" target="_blank">Ilhabela</a> island in Brazil, dating from 1975.<br />
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I could not find in QGIS the corresponding CRS, so I want to establish it based on the information that is in the PDF version of the map:<br />
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Universal Transverse Mercator Projection<br />
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Units are in kilometers, starting 10.000 km south of the equator (around de south pole), counting towards the north.<br />
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and 500 km west from the 45º W meridian, couting towards the east.<br />
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Horizontal Datum is Corrego Alegre with the Hayford 1924 ellipsoid and origins:<br />
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Latitude<font color="black"> 19° 50' 14.91" S<br />
Longitude 48° 57' 41.98" W </font><br />
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Vertical Datum is from Marégrafo de Imb</span></span>ituba, SC, but I don't really understand what are the parameters of the vertical datum that need to be taken in account.<br />
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I would be really thankful if someone can help me to set a proj4 CRS to this map.<br />
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PDF map can be downloaded here <span></span><a href="ftp://geoftp.ibge.gov.br/mapeamento_sistematico/topograficos/escala_50mil/pdf/sao_sebastiao27963.pdf" target="_blank">ftp://geoftp.ibge.gov.br/mapeamento_sistematico/topograficos/escala_50mil/pdf/sao_sebastiao27963.pdf</a><br />
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Vector (DGN) here <span></span><a href="ftp://geoftp.ibge.gov.br/mapeamento_sistematico/topograficos/escala_50mil/vetor/sao_sebastiao27963/vetor/" target="_blank">ftp://geoftp.ibge.gov.br/mapeamento_sistematico/topograficos/escala_50mil/vetor/sao_sebastiao27963/vetor/</a><br />
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