<html style="direction: ltr;">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<style type="text/css">body p { margin-bottom: 0cm; margin-top: 0pt; } </style>
</head>
<body bidimailui-charset-is-forced="true" style="direction: ltr;"
text="#000000" bgcolor="#FFFFFF">
<br>
<br>
<div class="moz-cite-prefix">On 12/19/2017 02:29 AM, Shane Carey
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CA+jRDxAuZDx1yCNHMsTVumVFxsS3U=hjJfjRpynTW_7p1vtMAg@mail.gmail.com">
<div>
<div dir="auto">Hi,</div>
<div dir="auto"><br>
</div>
<div dir="auto">Unfortunately I could not get that to work. Any
other suggestions? Cloud processing perhaps?</div>
<br>
</div>
</blockquote>
What happens? <br>
With 5 sq.m. pixels (that is your region setting?) and a DEM of
100,000 sq.km as you mentioned, then the DEM must contain around
100x10^9 sq.m or around 4x10^9 pixels. (4 billion pixels). That's a
lot... (You probably already did this calculation). So your DEM
raster is probably some 15 GB ? You'll need plenty of RAM.<br>
<br>
<br>
<blockquote type="cite"
cite="mid:CA+jRDxAuZDx1yCNHMsTVumVFxsS3U=hjJfjRpynTW_7p1vtMAg@mail.gmail.com">
<div>
<div class="gmail_quote">
<div>On Luan 18 Noll 2017 at 20:17, Shane Carey <<a
href="mailto:careyshan@gmail.com" moz-do-not-send="true">careyshan@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>Super, thanks<br>
</div>
<div>
<div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Dec 18, 2017 at 8:00
PM, <span><<a
href="mailto:grass-user-request@lists.osgeo.org"
target="_blank" moz-do-not-send="true">grass-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
grass-user mailing list submissions to<br>
<a
href="mailto:grass-user@lists.osgeo.org"
target="_blank" moz-do-not-send="true">grass-user@lists.osgeo.org</a><br>
<br>
To subscribe or unsubscribe via the World Wide
Web, visit<br>
<a
href="https://lists.osgeo.org/mailman/listinfo/grass-user"
rel="noreferrer" target="_blank"
moz-do-not-send="true">https://lists.osgeo.org/mailman/listinfo/grass-user</a><br>
or, via email, send a message with subject or body
'help' to<br>
<a
href="mailto:grass-user-request@lists.osgeo.org"
target="_blank" moz-do-not-send="true">grass-user-request@lists.osgeo.org</a><br>
<br>
You can reach the person managing the list at<br>
<a
href="mailto:grass-user-owner@lists.osgeo.org"
target="_blank" moz-do-not-send="true">grass-user-owner@lists.osgeo.org</a><br>
<br>
When replying, please edit your Subject line so it
is more specific<br>
than "Re: Contents of grass-user digest..."<br>
<br>
<br>
Today's Topics:<br>
<br>
1. Re: Contours (Rich Shepard)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Mon, 18 Dec 2017 09:38:16 -0800 (PST)<br>
From: Rich Shepard <<a
href="mailto:rshepard@appl-ecosys.com"
target="_blank" moz-do-not-send="true">rshepard@appl-ecosys.com</a>><br>
To: grass-user grass-user <<a
href="mailto:grass-user@lists.osgeo.org"
target="_blank" moz-do-not-send="true">grass-user@lists.osgeo.org</a>><br>
Subject: Re: [GRASS-user] Contours<br>
Message-ID:<br>
<<a
href="mailto:alpine.LNX.2.20.1712180935300.32060@salmo.appl-ecosys.com"
target="_blank" moz-do-not-send="true">alpine.LNX.2.20.1712180935300.32060@salmo.appl-ecosys.com</a>><br>
Content-Type: text/plain; charset=US-ASCII;
format=flowed<br>
<br>
On Mon, 18 Dec 2017, Shane Carey wrote:<br>
<br>
> I have a large DTM (5m cell size) and it
covers an area of 100,000km2. I<br>
> need to create contours every 10meters in the
dataset. If I tile the<br>
> dataset and contour each tile, the data, the
contours act funny at the<br>
> edges, hence the need to process the area as
one area. Is grass capable of<br>
> doing this?<br>
<br>
Shane,<br>
<br>
Yes. As long as you have sufficient memory and
drive space. You can always<br>
set the environment variable in ~/.bash_profile:<br>
<br>
export=GRASS_VECTOR_LOWMEM=1<br>
<br>
which will use available memory and not crash,
while running more slowly.<br>
<br>
If I'm wrong I'm sure we'll both read about it.
:-)<br>
<br>
HTH,<br>
<br>
Rich<br>
<br>
<br>
------------------------------<br>
<br>
Subject: Digest Footer<br>
<br>
_______________________________________________<br>
grass-user mailing list<br>
<a href="mailto:grass-user@lists.osgeo.org"
target="_blank" moz-do-not-send="true">grass-user@lists.osgeo.org</a><br>
<a
href="https://lists.osgeo.org/mailman/listinfo/grass-user"
rel="noreferrer" target="_blank"
moz-do-not-send="true">https://lists.osgeo.org/mailman/listinfo/grass-user</a><br>
<br>
------------------------------<br>
<br>
End of grass-user Digest, Vol 140, Issue 28<br>
*******************************************<br>
</blockquote>
</div>
<br>
<br clear="all">
<br>
</div>
</div>
</div>
<div>
<div>
<div class="gmail_extra">-- <br>
<div
class="m_-2206581573780779784m_7117590936068115291m_-2184065433275338732gmail_signature"
data-smartmail="gmail_signature">
<div>
<div>
<div>
<div>
<div>
<div>Le gach dea ghui,<br>
</div>
<div><span style="color:rgb(61,133,198)"><b><span
style="background-color:rgb(255,255,255)"><i>Shane Carey</i></span></b></span></div>
<div><span style="color:rgb(61,133,198)"><b><span
style="background-color:rgb(255,255,255)"><i>GIS and Data Solutions
Consultant</i></span></b></span><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</div>
<div dir="ltr">-- <br>
</div>
<div class="gmail_signature" data-smartmail="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>Le gach dea ghui,<br>
</div>
<div><span style="color:rgb(61,133,198)"><b><span
style="background-color:rgb(255,255,255)"><i>Shane
Carey</i></span></b></span></div>
<div><span style="color:rgb(61,133,198)"><b><span
style="background-color:rgb(255,255,255)"><i>GIS
and Data Solutions Consultant</i></span></b></span><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
grass-user mailing list
<a class="moz-txt-link-abbreviated" href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a>
<a class="moz-txt-link-freetext" href="https://lists.osgeo.org/mailman/listinfo/grass-user">https://lists.osgeo.org/mailman/listinfo/grass-user</a></pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Micha Silver
Ben Gurion Univ.
Sde Boker, Remote Sensing Lab
cell: +972-523-665918</pre>
</body>
</html>