<div dir="ltr">Hi Grant,<br><br>Perhaps th<div class="gmail_default" style="font-family:tahoma,sans-serif;display:inline">is link</div> can be useful to you<div class="gmail_default" style="font-family:tahoma,sans-serif;display:inline">:</div><div><div class="gmail_default" style="display:inline"><font face="tahoma, sans-serif"><a href="https://scientiaplusconscientia.wordpress.com/tag/sentinel/">https://scientiaplusconscientia.wordpress.com/tag/sentinel/</a></font><br></div></div><div><div class="gmail_default" style="font-family:tahoma,sans-serif;display:inline"></div><br>Cheers<div class="gmail_default" style="font-family:tahoma,sans-serif;display:inline">!</div><br><br>Hernán</div><div><br></div><div class="gmail_extra"><br><div class="gmail_quote">On 10 May 2017 at 16:00, <span dir="ltr"><<a href="mailto:qgis-user-request@lists.osgeo.org" target="_blank">qgis-user-request@lists.osgeo.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Send Qgis-user mailing list submissions to<br>
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Today's Topics:<br>
<br>
1. Merging Sentinel Images (Grant Boxer)<br>
2. Re: Keeping only POIs X kms from a trace? (Matt Boyd)<br>
3. Crashing (Allan Younger)<br>
4. Re: Crashing (Nyall Dawson)<br>
5. Re: Keeping only POIs X kms from a trace? (Winfried)<br>
<br>
<br>
------------------------------<wbr>------------------------------<wbr>----------<br>
<br>
Message: 1<br>
Date: Wed, 10 May 2017 08:50:43 +0800<br>
From: "Grant Boxer" <<a href="mailto:boxerg@iinet.net.au">boxerg@iinet.net.au</a>><br>
To: <<a href="mailto:qgis-user@lists.osgeo.org">qgis-user@lists.osgeo.org</a>><br>
Subject: [Qgis-user] Merging Sentinel Images<br>
Message-ID: <000001d2c927$74297ff0$<wbr>5c7c7fd0$@<a href="http://iinet.net.au" rel="noreferrer" target="_blank">iinet.net.au</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
I am attempting to merge two adjacent Sentinel 2 images, but when I do it<br>
via the Raster > Miscellaneous > Merge option, I get the two merged parts<br>
with a different scaling in the merged image. Any suggestions on how to get<br>
a consistent scaling across the entire merged image?<br>
<br>
<br>
<br>
Grant Boxer<br>
<br>
Maylands, Western Australia, 6931<br>
<br>
<br>
<br>
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Message: 2<br>
Date: Wed, 10 May 2017 13:18:05 +1000<br>
From: Matt Boyd <<a href="mailto:mattslists@gmail.com">mattslists@gmail.com</a>><br>
To: Winfried <<a href="mailto:codecomplete@free.fr">codecomplete@free.fr</a>><br>
Cc: qgis-user <<a href="mailto:qgis-user@lists.osgeo.org">qgis-user@lists.osgeo.org</a>><br>
Subject: Re: [Qgis-user] Keeping only POIs X kms from a trace?<br>
Message-ID:<br>
<CAFgHUGL+RBkYmWYy7vU=<wbr>9wj1kvZvnFMrVCYHepHH7RRu8R=<a href="mailto:vrw@mail.gmail.com">vrw<wbr>@mail.gmail.com</a>><br>
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<br>
Hi Winfried,<br>
usually in QGIS, unless it's specified differently, the distance field is<br>
in the same units as the project properties. So, 5km would be 5000m in the<br>
the projected UTM zones which use meters.<br>
If 0,05 worked then I assume that your project is in<br>
degrees/minutes/seconds (<a href="https://en.wikipedia.org/wiki/Decimal_degrees" rel="noreferrer" target="_blank">https://en.wikipedia.org/<wbr>wiki/Decimal_degrees</a>)<br>
which is approximately 5km at the equator, close enough for what you want<br>
to do this time.<br>
<br>
One of the key things you'll need to know about if you keep working on GIS<br>
stuff is projections, QGIS can automatically reproject for map displays.<br>
However, when doing a calculation / operation that involves 2 or more<br>
inputs then I make sure to reproject all the inputs to the same system and<br>
work on those files only (save as and select a common projection) knowing<br>
the UTM zone or whatever meters/feet projection is used locally is helpful<br>
when you need to work out distances and areas in useful units.<br>
<br>
Matt<br>
<br>
<br>
<br>
On Tue, May 9, 2017 at 7:22 PM, Winfried <<a href="mailto:codecomplete@free.fr">codecomplete@free.fr</a>> wrote:<br>
<br>
> Thank you.<br>
><br>
> Turns out I was pretty close to the solution: The error was in the order<br>
> parameters were set in the Spatial Query dialog. Also, there is no<br>
> information on the unit used for Distance in the Fixed Distance Buffer; I<br>
> guess "0,05" means 5kms.<br>
><br>
> <<a href="http://osgeo-org.1560.x6.nabble.com/file/n5319849/QGIS.png" rel="noreferrer" target="_blank">http://osgeo-org.1560.x6.<wbr>nabble.com/file/n5319849/QGIS.<wbr>png</a>><br>
><br>
> I'll see if a simple Python script can perform the same thing, or even<br>
> split<br>
> campsites into regions instead of whole nations.<br>
><br>
><br>
><br>
> --<br>
> View this message in context: <a href="http://osgeo-org.1560.x6" rel="noreferrer" target="_blank">http://osgeo-org.1560.x6</a>.<br>
> <a href="http://nabble.com/Keeping-only-POIs-X-kms-from-a-trace-tp5319730p5319849.html" rel="noreferrer" target="_blank">nabble.com/Keeping-only-POIs-<wbr>X-kms-from-a-trace-<wbr>tp5319730p5319849.html</a><br>
> Sent from the QGIS - User mailing list archive at Nabble.com.<br>
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Message: 3<br>
Date: Wed, 10 May 2017 03:54:38 +0000<br>
From: "Allan Younger" <<a href="mailto:ahyounger@iinet.net.au">ahyounger@iinet.net.au</a>><br>
To: <a href="mailto:qgis-user@lists.osgeo.org">qgis-user@lists.osgeo.org</a><br>
Subject: [Qgis-user] Crashing<br>
Message-ID: <em4ea9ad0d-5f29-486e-8c2b-<wbr>1a16491d31bd@ufo2><br>
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I am having major problems with the latest QGIS 2.18.7 crashing all the<br>
time with only a very small number of layers open.<br>
Have uninstalled & re-installed 3 times.<br>
Previous versions handled huge amount more data.<br>
Running a 64 bit 16gb wind 7pro system.<br>
Allan Younger<br>
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Message: 4<br>
Date: Wed, 10 May 2017 14:39:37 +1000<br>
From: Nyall Dawson <<a href="mailto:nyall.dawson@gmail.com">nyall.dawson@gmail.com</a>><br>
To: Allan Younger <<a href="mailto:ahyounger@iinet.net.au">ahyounger@iinet.net.au</a>><br>
Cc: qgis-user <<a href="mailto:qgis-user@lists.osgeo.org">qgis-user@lists.osgeo.org</a>><br>
Subject: Re: [Qgis-user] Crashing<br>
Message-ID:<br>
<<a href="mailto:CAB28Asi08cy_jZbNree5YX7kv_N1YcUbmHWq2cN0mW1YM6qafw@mail.gmail.com">CAB28Asi08cy_jZbNree5YX7kv_<wbr>N1YcUbmHWq2cN0mW1YM6qafw@mail.<wbr>gmail.com</a>><br>
Content-Type: text/plain; charset=UTF-8<br>
<br>
On 10 May 2017 at 13:54, Allan Younger <<a href="mailto:ahyounger@iinet.net.au">ahyounger@iinet.net.au</a>> wrote:<br>
> I am having major problems with the latest QGIS 2.18.7 crashing all the time<br>
> with only a very small number of layers open.<br>
> Have uninstalled & re-installed 3 times.<br>
> Previous versions handled huge amount more data.<br>
> Running a 64 bit 16gb wind 7pro system.<br>
> Allan Younger<br>
<br>
Can you please check:<br>
1. do you have on the fly reprojection enabled?<br>
2. are any layers in your project in a different projection to the<br>
project itself?<br>
3. if so, does removing these layers from the project help?<br>
<br>
Nyall<br>
<br>
<br>
------------------------------<br>
<br>
Message: 5<br>
Date: Wed, 10 May 2017 02:36:09 -0700 (MST)<br>
From: Winfried <<a href="mailto:codecomplete@free.fr">codecomplete@free.fr</a>><br>
To: <a href="mailto:qgis-user@lists.osgeo.org">qgis-user@lists.osgeo.org</a><br>
Subject: Re: [Qgis-user] Keeping only POIs X kms from a trace?<br>
Message-ID: <<a href="mailto:1494408969084-5320022.post@n6.nabble.com">1494408969084-5320022.post@<wbr>n6.nabble.com</a>><br>
Content-Type: text/plain; charset=us-ascii<br>
<br>
Thanks for the infos. I didn't know about CRS, although I could have guessed<br>
that it wouldn't make sense to specify meters when GPX files contain data in<br>
latitude + longitude, ie. degrees. I used 0,05 by trial and error.<br>
<br>
<br>
<br>
--<br>
View this message in context: <a href="http://osgeo-org.1560.x6.nabble.com/Keeping-only-POIs-X-kms-from-a-trace-tp5319730p5320022.html" rel="noreferrer" target="_blank">http://osgeo-org.1560.x6.<wbr>nabble.com/Keeping-only-POIs-<wbr>X-kms-from-a-trace-<wbr>tp5319730p5320022.html</a><br>
Sent from the QGIS - User mailing list archive at Nabble.com.<br>
<br>
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</blockquote></div><br></div></div>