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<p class="MsoNormal"><span style="font-family: Calibri;">Olá a todos,</span></p>

<p class="MsoNormal"><span style="font-family: Calibri;"> </span></p>

<p class="MsoNormal"><span style="font-family: Calibri;">Tenho uma dúvida que passo
a explicar: tenho uns ficheiros que foram criados no ArcMap (Esri) e que têm como referencia o
sistema de coordenadas:</span></p>

<p class="MsoNormal"><span style="font-family: Calibri;"> </span></p>

<p class="MsoNormal"><b style=""><span style="font-family: Calibri; color: navy;">Datum_73_Hayford_Gauss_IGeoE</span></b></p>

<p class="MsoNormal"><span style="font-family: Calibri;"> </span></p>

<p class="MsoNormal"><span style="font-family: Calibri;">+proj=tmerc
+lat_0=39.66666666666666 +lon_0=-8.131906111111112 +k=1 +x_<b style=""><span style="color: navy;">0=200180.598</span></b> +y_<b style=""><span style="color: navy;">0=299913.01</span></b>
+ellps=intl +units=m +no_defs</span></p>

<p class="MsoNormal"><span style="font-family: Calibri;"> </span></p>

<p class="MsoNormal"><span style="font-family: Calibri; background: none repeat scroll 0% 0% yellow;" lang="EN-GB">Projection: Transverse_Mercator</span></p>

<p class="MsoNormal"><span style="font-family: Calibri; background: none repeat scroll 0% 0% yellow;" lang="EN-GB">False_Easting: 200180,598000</span></p>

<p class="MsoNormal"><span style="font-family: Calibri; background: none repeat scroll 0% 0% yellow;" lang="EN-GB">False_Northing: 299913,010000</span></p>

<p class="MsoNormal"><span style="font-family: Calibri; background: none repeat scroll 0% 0% yellow;" lang="EN-GB">Central_Meridian: -8,131906</span></p>

<p class="MsoNormal"><span style="font-family: Calibri; background: none repeat scroll 0% 0% yellow;" lang="EN-GB">Scale_Factor: 1,000000</span></p>

<p class="MsoNormal"><span style="font-family: Calibri; background: none repeat scroll 0% 0% yellow;" lang="EN-GB">Latitude_Of_Origin: 39,666667</span></p>

<p class="MsoNormal"><span style="font-family: Calibri; background: none repeat scroll 0% 0% yellow;" lang="EN-GB">Linear Unit: Meter (1,000000)</span></p>

<p class="MsoNormal"><span style="font-family: Calibri; background: none repeat scroll 0% 0% yellow;" lang="EN-GB"> </span></p>

<p class="MsoNormal"><span style="font-family: Calibri; background: none repeat scroll 0% 0% yellow;" lang="EN-GB">Geographic Coordinate System:
GCS_Datum_73</span></p>

<p class="MsoNormal"><span style="font-family: Calibri; background: none repeat scroll 0% 0% yellow;" lang="EN-GB">Angular Unit: Degree
(0,017453292519943299)</span></p>

<p class="MsoNormal"><span style="font-family: Calibri; background: none repeat scroll 0% 0% yellow;" lang="EN-GB">Prime Meridian: Greenwich (0,000000000000000000)</span></p>

<p class="MsoNormal"><span style="font-family: Calibri; background: none repeat scroll 0% 0% yellow;" lang="EN-GB">Datum: D_Datum_73</span></p>

<p class="MsoNormal"><span style="font-family: Calibri; background: none repeat scroll 0% 0% yellow;" lang="EN-GB">Spheroid: International_1924</span></p>

<p class="MsoNormal"><span style="font-family: Calibri; background: none repeat scroll 0% 0% yellow;" lang="EN-GB">Semimajor Axis:
6378388,000000000000000000</span></p>

<p class="MsoNormal"><span style="font-family: Calibri; background: none repeat scroll 0% 0% yellow;" lang="EN-GB">Semiminor Axis:
6356911,946127946500000000</span></p>

<p class="MsoNormal"><span style="font-family: Calibri; background: none repeat scroll 0% 0% yellow;" lang="EN-GB">Inverse Flattening:
297,000000000000000000</span><span style="font-family: Calibri;" lang="EN-GB"></span></p>

<p class="MsoNormal"><span style="font-family: Calibri;" lang="EN-GB"> </span></p>

<p class="MsoNormal"><span style="font-family: Calibri;">no Qgis a referencia
equivalente é esta?: <b style=""><span style="color: navy;">QGIS - EPSG: 20790</span></b></span></p>

<p class="MsoNormal"><span style="font-family: Calibri;"> </span></p>

<p class="MsoNormal"><span style="font-family: Calibri;">+proj=tmerc
+lat_0=39.66666666666666 +lon_0=1 +k=1 +x_<b style=""><span style="color: navy;">0=200000</span></b> +y_<b style=""><span style="color: navy;">0=300000</span></b> +ellps=intl +pm=lisbon +units=m +no_defs</span></p>

<p class="MsoNormal"><span style="font-family: Calibri;"> </span></p>

<p class="MsoNormal"><span style="font-family: Calibri;">é que quando abro um
shapefile criado na esri com as coordenadas <b style=""><span style="color: navy;">Datum_73_Hayford_Gauss_IGeoE </span></b>no
Qgis ele não coincide com as coordenadas do <b style=""><span style="color: navy;">QGIS - EPSG: 20790</span></b></span></p><p class="MsoNormal"><br></p><p class="MsoNormal"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="ProgId" content="Word.Document"><meta name="Generator" content="Microsoft Word 11"><meta name="Originator" content="Microsoft Word 11"><link rel="File-List" href="file:///C:%5CDOCUME%7E1%5CADMINI%7E1%5CDEFINI%7E1%5CTemp%5Cmsohtml1%5C01%5Cclip_filelist.xml"><style>
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</p><p class="MsoNormal"><span style="font-family: Calibri;">Há alguma forma de
contornar isso? ou </span><span style="font-family: Calibri;">existe algum sistema de
coordenadas que seja ou venha a ser utilizado universalmente (Portugal), para que não
tenhamos este tipo de situação?</span> </p><p></p><p class="MsoNormal"><span style="font-family: Calibri;"></span></p><p class="MsoNormal"><br><span style="font-family: Calibri;"></span></p><p class="MsoNormal"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="ProgId" content="Word.Document"><meta name="Generator" content="Microsoft Word 11"><meta name="Originator" content="Microsoft Word 11"><link rel="File-List" href="file:///C:%5CDOCUME%7E1%5CADMINI%7E1%5CDEFINI%7E1%5CTemp%5Cmsohtml1%5C01%5Cclip_filelist.xml"><style>
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</p><p class="MsoNormal"><span style="font-family: Calibri;">Muito Obrigado pela ajuda.</span></p>

<p class="MsoNormal"><span style="font-family: Calibri;"> </span></p>

<p class="MsoNormal"><span style="font-family: Calibri;">Orlando Bernardo</span></p>

<p></p><p class="MsoNormal"><br></p><p class="MsoNormal"><br><span style="font-family: Calibri;"></span></p>