<div dir="ltr">Hello Stefan,<div><br></div><div>As Markus mentioned, although SpatiaLite uses SQLite, it is a different entity. In the past, I used native dbms of GRASS. For the new project, I am thinking of switching to SpatiaLite, if it would be practical. The aim here is to record settlements (points), weather stations (points), stream network (lines), and basins (polygons) in one db to make some calculations easier; rather than extracting data from GRASS, exporting them into a separate SpatiaLite file. analyzing, and putting data back into GRASS' attribute data. It seemed to me that doing it with SpatiaLite would be easier but I am open to suggestions. I just started so I want to make sure that I build this right. </div><div><br></div><div><br></div><div>As for QGIS (2.18.2) - GRASS (v. 7.0) issue –running on Mac OS 10.10.5 Yosemite–, when I install GRASS plugin, the default path for GRAS installation files is set to " /Users/Shared/unix/grass-qgis-<wbr>mtlion/grass-7.0.4 ". I do not have GRASS installation files there and this creates an initiate error "GRASS init error: GRASS cannot found..." The only folder related to GRASS in my Users folder is "grass_dev" (sub-folders for v.6 and v.7) and some read-me files. I saw on the internet that some people suggested to move (,app) icons out of the folders but I am not certain because it was an old email thread. </div><div><br></div><div>When I provide the correct path: AFAIK it is " <span style="font-family:menlo;font-size:11px">/Applications/GRASS/GRASS-7.<wbr>0.app/Contents/MacOS </span>" that does not seem to resolve the issue. All GRASS versions I have are kept in one folder titled GRASS under Applications. So, I am not sure how to solve this one.</div><div><br></div><div><span class="m_-9057239094757279067m_1432391372911318603gmail-im" style="font-size:12.800000190734863px"><p class="MsoNormal"><span lang="EN-US" style="font-size:9pt;font-family:helvetica,sans-serif;color:black">BÜLENT </span></p></span></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Mar 28, 2017 at 11:32 AM, Blumentrath, Stefan <span dir="ltr"><<a href="mailto:Stefan.Blumentrath@nina.no" target="_blank">Stefan.Blumentrath@nina.no</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Hi Bülent,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">GRASS 7 uses SQLite for attribute management by default, so except for the spatial part the DB backend it is identical.
And a couple of modules can handle points without topology.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">If you give us more information on what exactly you are planning to do with your vector data it would be more easy to
suggest a solution… E.g. are you using polygons as input or output? What are you going to do with them…<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">BTW. it should be fully possible to load GRASS data in QGIS 2.18. What is your OS and GRASS version and what is the “path”
issue you mentioned?<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Cheers<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Stefan<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
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<div style="border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Bulent Arikan [mailto:<a href="mailto:bulent.arikan@gmail.com" target="_blank">bulent.arikan@gmail.co<wbr>m</a>]
<br>
<b>Sent:</b> tirsdag 28. mars 2017 09.37<br>
<b>To:</b> Blumentrath, Stefan <<a href="mailto:Stefan.Blumentrath@nina.no" target="_blank">Stefan.Blumentrath@nina.no</a>><br>
<b>Subject:</b> Re: [GRASS-user] GRASS Location covering multiple UTM zones and SpatiaLite<u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Hi Stefan,<u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US">Thank you for your response! I guess that makes sense and I will define a location for UTM 36 since it covers the majority of the region as well as it is between 35 and 37. That would probably help to keep any distortion
at minimum. <u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US">I understand that there is still not full compatibility with SpatiaLite, so I will probably think something else. <u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US">Cheers,<u></u><u></u></span></p>
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</span><div>
<p class="MsoNormal"><span lang="EN-US"> <u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Helvetica",sans-serif;color:black">BÜLENT ARIKAN</span><span lang="EN-US"><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Helvetica",sans-serif;color:black">Assistant Professor<u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Helvetica",sans-serif;color:black">Department of Ecology and Evolution<u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Helvetica",sans-serif;color:black">Eurasia Institute of Earth Sciences<br>
Istanbul Technical University <br>
Maslak-Sarıyer<br>
Istanbul<br>
34469<u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Helvetica",sans-serif;color:black">Turkey<u></u><u></u></span></p>
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</span><p class="MsoNormal"><a href="http://web.itu.edu.tr/~bulentarikan/index.html" target="_blank"><span lang="EN-US" style="font-size:9.0pt;font-family:"Helvetica",sans-serif">http://web.itu.edu.tr/~bulenta<wbr>rikan/index.html</span></a><span lang="EN-US" style="font-size:9.0pt;font-family:"Helvetica",sans-serif;color:black"><br>
</span><span style="font-size:9.0pt;font-family:"Helvetica",sans-serif;color:black"><img border="0" width="94" height="125" style="width:.9791in;height:1.2986in" id="m_-9057239094757279067m_1432391372911318603m_8906448171792074646FF326885-EA82-4F7F-9CEA-96F984CAD4E2" src="cid:image001.jpg@01D2A7AA.458E7A90" alt="cid:image001.jpg@01D2A7AA.458E7A90"></span><span lang="EN-US"><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US">On Mar 28, 2017, at 10:07 AM, Blumentrath, Stefan <</span><a href="mailto:Stefan.Blumentrath@nina.no" target="_blank"><span lang="EN-US">Stefan.Blumentrath@nina.no</span></a><span lang="EN-US">> wrote:<u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Hi Bülent,</span><span lang="EN-US"><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span><span lang="EN-US"><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Here in Norway we face the same situation. The country covers UTM zones 31 to 36. However, the standard the public authorities suggest is to use
the average (UTM 33) when running analysis on the whole country.</span><span lang="EN-US"><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Of course this leads to imprecision and distortion, but if that is significant or not depends on your application (esp. scale of the problem you
are going to solve)…</span><span lang="EN-US"><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span><span lang="EN-US"><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Since GRASS has a topological vector format, linking external vector data can cause issues in your analysis, esp. with polygons. However, points
can be fine in many cases… Please have a look at the mauals of v.external [1] and v.external.out [2].</span><span lang="EN-US"><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span><span lang="EN-US"><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Cheers,</span><span lang="EN-US"><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Stefan</span><span lang="EN-US"><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span><span lang="EN-US"><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">1:<span class="m_-9057239094757279067m_1432391372911318603m_8906448171792074646apple-converted-space"> </span></span><a href="https://grass.osgeo.org/grass72/manuals/v.external.html" target="_blank"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#954f72">https://grass.osgeo.org/gra<wbr>ss72/manuals/v.external.html</span></a><span lang="EN-US"><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">2:<span class="m_-9057239094757279067m_1432391372911318603m_8906448171792074646apple-converted-space"> </span></span><a href="https://grass.osgeo.org/grass72/manuals/v.external.out.html" target="_blank"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#954f72">https://grass.osgeo.org/gra<wbr>ss72/manuals/v.external.out.ht<wbr>ml</span></a><span lang="EN-US"><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="m_-9057239094757279067m_1432391372911318603gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr">Asst. Prof. BÜLENT ARIKAN<div>Department of Ecology and Evolution</div><div><div>Eurasia Institute of Earth Sciences</div></div><div>Istanbul Technical University</div><div>Maslak-Sariyer, Istanbul</div><div>TURKEY</div><div>34469</div><div><br></div></div></div></div></div></div>
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