<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:10pt">Thank you Alexandre for your suggestion: problem solved!<br><div><span><br></span></div><div style="display: block;" class="yahoo_quoted"> <br> <br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 10pt;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial" size="2"> Il Martedě 19 Novembre 2013 16:16, Alexandre Neto <senhor.neto@gmail.com> ha scritto:<br> </font> </div> <div class="y_msg_container"><div id="yiv5103690502"><div><div dir="ltr"><div>Hello giuseppe,</div><div><br clear="none"></div>You can do it directly on a spreadsheet like libreoffice calc. Get the X and Y coordinates, and elevation from each point, For each
point, calculate the distance to the previous point using:<div>
<br clear="none"></div><div> sqrt((x2-x1)^2 + (y2-y1)^2)</div><div><br clear="none"></div><div>and in a new column calculate acumulate that value (This is the M column).</div><div>You can then use the M column and the Z to create a area chart.<br clear="none">
</div><div><br clear="none"></div><div>Hope this helps.</div><div><br clear="none"></div><div>Alexandre Neto</div></div><div class="yiv5103690502gmail_extra"><br clear="none"><br clear="none"><div class="yiv5103690502gmail_quote">On Tue, Nov 19, 2013 at 2:57 PM, venerio giuseppe anardu <span dir="ltr"><<a rel="nofollow" shape="rect" ymailto="mailto:anardu.geol@yahoo.it" target="_blank" href="mailto:anardu.geol@yahoo.it">anardu.geol@yahoo.it</a>></span> wrote:<br clear="none">
<blockquote class="yiv5103690502gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="yiv5103690502yqt9001284148" id="yiv5103690502yqt82696"><div><div style="font-size:10pt;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;">I knew and already used that plugin: I have several points on a surface and in that case it suits my purposes because I interpolated the vector points to obtain a DTM raster to use the plugin.<br clear="none">
But in this case I'd need a way to accomplish the task directly from surveyed vector points without interpolating: in other words a profile made by vector points not by interpolated raster surface.<br clear="none">I've made some esperiments, but interpolate a raster surfece from points surveyed on a straight line, as I supposed, gave unacceptable results...<br clear="none">
<br clear="none">Giuseppe<br clear="none"><br clear="none"><div><span><br clear="none"></span></div><div style="display:block;"> <br clear="none"> <br clear="none"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:10pt;"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12pt;">
<div dir="ltr"> <font face="Arial"> Il Martedě 19 Novembre 2013 15:29, Alfonso Flaquer <<a rel="nofollow" shape="rect" ymailto="mailto:alfonsofla220@gmail.com" target="_blank" href="mailto:alfonsofla220@gmail.com">alfonsofla220@gmail.com</a>> ha scritto:<br clear="none"> </font> </div><div><div class="yiv5103690502h5">
<div><div><div><div dir="ltr"><div>Hi Guiseppe,</div><div>In Qgis 1.8 exist a plugin named Profile Tool. This plugin allow you to create a topographic profile from a raster layer. Maybe you can create a raster from your vector data.</div>
<div>regards<br clear="none"></div><div><br clear="none"></div><div><div>Hola Guiseppe,</div><div>En Qgis 1.8 existe un plugin llamado "Profile Tool". este plugin permite realizar un perfil topográfico a partir de un archivo raster. Quizás puedas obtener un raster de tus datos vectoriales y luego utilizar el plugin.</div>
</div><div><br clear="none"></div><div>Saludos</div></div><div><br clear="none"><br clear="none"><div>2013/11/18 venerio giuseppe anardu <span dir="ltr"><<a rel="nofollow" shape="rect" ymailto="mailto:anardu.geol@yahoo.it" target="_blank" href="mailto:anardu.geol@yahoo.it">anardu.geol@yahoo.it</a>></span><br clear="none">
<blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div><div><div style="font-size:10pt;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;"><div>
<div><div style="font-size:10pt;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;"><div><div><div style="font-size:10pt;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;">
Hello to everybody,<br clear="none"><br clear="none">I have to make a topographic profile of some vector points surveyed along a straight line, wich is the best way to do it?<br clear="none"><br clear="none">Many thanks in advance,<br clear="none">
Giuseppe<br clear="none"><br clear="none"><div><br clear="none"></div></div>
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