<html><head></head><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1455816647465_96631"><span id="yui_3_16_0_1_1455816647465_96705">Hi Gill,</span></div><div id="yui_3_16_0_1_1455816647465_96719"><br><span id="yui_3_16_0_1_1455816647465_96705"></span></div><div dir="ltr" id="yui_3_16_0_1_1455816647465_96756"><span id="yui_3_16_0_1_1455816647465_96705">QGIS needs to know exactly what CRS the data is before it can convert them to something else. The EPSG code is normally how you do this. If you see:</span></div><div dir="ltr" id="yui_3_16_0_1_1455816647465_96734"><span id="yui_3_16_0_1_1455816647465_96705"><a id="yui_3_16_0_1_1455816647465_96735" href="http://spatialreference.org/ref/?search=irish">http://spatialreference.org/ref/?search=irish</a></span></div><div id="yui_3_16_0_1_1455816647465_96797" dir="ltr"><span id="yui_3_16_0_1_1455816647465_96705">there seem to be 6 possibilities. I'm not sure what the difference is, but you should identify the correct EPSG code for your coordinates.</span></div><br><div id="yui_3_16_0_1_1455816647465_96894">You can then (in QGIS with the dataset opened as a map - have you got that far?) right click on the layer in the layer tab to bring up the layer menu, & use the "Set layer CRS" facility to tell QGIS this (if it does not already know - in some cases it may have read this from the data automatically).</div><div id="yui_3_16_0_1_1455816647465_96973"><br></div><div dir="ltr" id="yui_3_16_0_1_1455816647465_97033">There are now 3 ways to "translate a long list of Irish grid references to a map which has lat and long data" depending on exactly what you mean.<br></div><div id="yui_3_16_0_1_1455816647465_97037"><br></div><div id="yui_3_16_0_1_1455816647465_97038">You can then go to Project->Properties to set the QGIS map to EPSG:4326, which is basic lat/long coordinates. This will tell QGIS to display your Irish grid data as lat/long - ie: reproject on the fly to provide you with a lat/long map.</div><div id="yui_3_16_0_1_1455816647465_97068"><br></div><div id="yui_3_16_0_1_1455816647465_97278">You can use the layer menu to save your layer, in a different format and/or projection as you specify. If you change the output CRS to EPSG:4326 & save it, the new dataset will be have lat/long coordinates. This creates a new data file (rather than a map), as a lat/long version of your data. <br></div><div id="yui_3_16_0_1_1455816647465_97040"><br></div><div dir="ltr" id="yui_3_16_0_1_1455816647465_96895">In the Print composer, for setting up a map layout for printing, you can have a map in (say) Irish grid coordinates, but set up labelled ticks on the map frame which are in lat/long. You can also choose to use decimal degrees, degrees with decimal minutes, optional NSEW suffixes, etc. This gives you a locally projected map labelled with degrees.</div><div id="yui_3_16_0_1_1455816647465_97428" dir="ltr"><br></div><div dir="ltr"><br></div><div id="yui_3_16_0_1_1455816647465_97429" dir="ltr">I hope this helps,</div><div id="yui_3_16_0_1_1455816647465_97430" dir="ltr"><br></div><div id="yui_3_16_0_1_1455816647465_97431" dir="ltr">Cheers</div><div id="yui_3_16_0_1_1455816647465_97432" dir="ltr"><br></div><div id="yui_3_16_0_1_1455816647465_97433" dir="ltr">Brent Wood<br></div><div id="yui_3_16_0_1_1455816647465_96703" class="qtdSeparateBR"><br><br></div><div style="display: block;" id="yui_3_16_0_1_1455816647465_96695" class="yahoo_quoted"> <div id="yui_3_16_0_1_1455816647465_96694" style="font-family: verdana, helvetica, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_1_1455816647465_96693" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_1_1455816647465_96692" dir="ltr"> <font id="yui_3_16_0_1_1455816647465_96691" size="2" face="Arial"> <hr id="yui_3_16_0_1_1455816647465_96702" size="1"> <b><span style="font-weight:bold;">From:</span></b> Gill Weyman <gillwn@hotmail.com><br> <b id="yui_3_16_0_1_1455816647465_96690"><span id="yui_3_16_0_1_1455816647465_96689" style="font-weight: bold;">To:</span></b> "qgis-user@lists.osgeo.org" <qgis-user@lists.osgeo.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Friday, February 19, 2016 11:51 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> [Qgis-user] information<br> </font> </div> <div id="yui_3_16_0_1_1455816647465_96699" class="y_msg_container"><br><div id="yiv1273304796">
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<div id="yui_3_16_0_1_1455816647465_96698"><div id="yui_3_16_0_1_1455816647465_96697" dir="ltr">Hello<div id="yui_3_16_0_1_1455816647465_96696">I am new to qgis and wondering how I translate a long list of Irish grid references to a map which has lat and long data?<br>Any pointing in the right direction would be appreciated.</div><div>Gill<br><br></div> </div></div>
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