<HTML dir=ltr><HEAD>
<META http-equiv=Content-Type content="text/html; charset=unicode">
<META content="MSHTML 6.00.6000.16608" name=GENERATOR></HEAD>
<BODY>
<DIV><FONT face=Arial color=#000000 size=2>Hi all,</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>I read cs2cs manual page, but I still have big doubts about it! quickly:</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>0. Preamble: I built PROJ.4 4.6 on windows using MinGW</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>1. Question 1: when I launch cs2cs from command line it executes the requested operation and then waits for others inputs... how can I quit, without the need of killing the process in task manager?</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>2. Question 2: I need to trasform single points from WGS84 (EPSG ID = 4326) to Gauss-Boaga Roma40 West (EPSG ID = 3003)</FONT></DIV>
<DIV><FONT size=2>while ID=4326 determinates an univocal datum, to correctly define Gauss-Boaga Roma40 West I need to specify also +towgs84 parameters, retrieved by GRASS (creating a new location in GRASS using 3003 EPSG code, it asks for furthers options, suggesting the correct parameters to set):</FONT></DIV>
<DIV><FONT size=2>the complete datum definition for Gauss-Boaga Roma40 West is as follows (from GRASS):</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>EPSG ID = 3003<BR>Option 2<BR>Used in Italy (Peninsular Part)<BR>towgs84=-104.1,-49.1,-9.9,0.971,-2.917,0.714,-11.68<BR>Accuracy 3-4m</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>how can I use cs2cs respecting the previous parameters?</FONT></DIV>
<DIV><FONT size=2>I tried with <FONT face="Courier New">cs2cs +init=epsg:4326 +to +init=epsg:3003</FONT></FONT></DIV>
<DIV><FONT size=2>but I don't know how to set towgs84 parameters (and even if they are needed)</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Thanks fo help</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Marco</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV></BODY></HTML>