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List:       grass-user
Subject:    Re: [GRASS-user] v.to.raster question
From:       Valter Albino <valteralbino () gmail ! com>
Date:       2020-03-16 16:04:14
Message-ID: CANPyY5MZb76xiCCGYMtsw98zuihriBHK7_xsFWKz9xZqYinprw () mail ! gmail ! com
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My fault => forgot to write that the process was done in GRASS GIS, from
QGIS. The temporary file is loaded by default and then i save it (geotiff)
in some location. Does it make sense?
I'am using QGIS 3.12.0 + GRASS 7.8.2
Cumprimentos,
*Valter Albino -* Geógrafo Físico, M.Sc.
Modelação H&H / Riscos ambientais / OT&U
www.valteralbino.wixsite.com/hydrodynamics


Valter Albino <valteralbino@gmail.com> escreveu no dia segunda, 16/03/2020
à (s) 15:57:

> My fault => forget to write that the process was done in GRASS GIS, from
> QGIS. The temporary file is loaded by default and then i save it in some
> location.
> Does it make sense?
>
> Cumprimentos,
> *Valter Albino -* Geógrafo Físico, M.Sc.
> Modelação H&H / Riscos ambientais / OT&U
> www.valteralbino.wixsite.com/hydrodynamics
>
>
> Markus Neteler <neteler@osgeo.org> escreveu no dia segunda, 16/03/2020
> Ã (s) 15:48:
>
>> Hi,
>>
>> On Mon, Mar 16, 2020 at 4:37 PM Valter Albino <valteralbino@gmail.com>
>> wrote:
>>
>>> Hi,
>>>
>>> When converting from lines to raster using v.to.rast, the result is good
>>> when still a temporary file, but when i saved it, the lines are know
>>> disconnected:
>>>
>>
>> ... what are your steps in detail?
>> v.to.rast generates directly a raster map, which temporary file do you
>> refer to?
>> And when you export this raster map to e.g. GeoTIFF with r.out.gdal, it
>> is done at the resolution and extent of the computational region.
>>
>> Pseudo-code
>>
>> 1. g.region .... set to desired raster resolution and extent (bounding
>> box)
>> 2. v.to.rast ....
>> 3. r.out.gdal ...
>>
>> Best,
>> Markus
>>
>

[Attachment #5 (text/html)]

<div dir="ltr">My fault =&gt; forgot to write that the process was done in GRASS GIS, \
from QGIS. The temporary file is loaded by default and then i save it (geotiff) in \
some location. Does it make sense?<br><div>I&#39;am using QGIS 3.12.0  + GRASS \
7.8.2</div><div><div dir="ltr" class="gmail_signature" \
data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div \
dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div \
dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div><span \
style="color:rgb(0,0,0)"><font size="1"><span \
style="background-color:rgb(255,255,255)"><span \
style="font-family:arial,helvetica,sans-serif">Cumprimentos,</span></span></font></span><b><span \
style="color:rgb(39,78,19)"><font size="1"><span \
style="background-color:rgb(255,255,255)"><span \
style="font-family:arial,helvetica,sans-serif"><br>Valter Albino \
-</span></span></font></span></b><span style="color:rgb(39,78,19)"><font \
size="1"><span style="background-color:rgb(255,255,255)"><span \
style="font-family:arial,helvetica,sans-serif"><b> </b>Geógrafo Físico, \
M.Sc.<span></span><span></span></span></span></font></span><b><span \
style="color:rgb(39,78,19)"><font size="1"><span \
style="background-color:rgb(255,255,255)"><span \
style="font-family:arial,helvetica,sans-serif"></span></span></font></span></b><br><b><span \
style="color:rgb(39,78,19)"><font size="1"><span \
style="background-color:rgb(255,255,255)"><span \
style="font-family:arial,helvetica,sans-serif"></span></span></font></span></b></div></div><div><span \
style="color:rgb(39,78,19)"><font size="1"><span \
style="background-color:rgb(255,255,255)"><span \
style="font-family:arial,helvetica,sans-serif">Modelação H&amp;H / </span><span \
style="font-family:arial,helvetica,sans-serif">Riscos ambientais / \
OT&amp;U<br></span></span></font></span></div><span style="color:rgb(39,78,19)"><font \
size="1"><span style="background-color:rgb(255,255,255)"><span \
style="font-family:arial,helvetica,sans-serif"><a \
href="http://www.valteralbino.wixsite.com/hydrodynamics" \
target="_blank">www.valteralbino.wixsite.com/hydrodynamics</a></span></span></font></s \
pan><br></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><br></div><br><div \
class="gmail_quote"><div dir="ltr" class="gmail_attr">Valter Albino &lt;<a \
href="mailto:valteralbino@gmail.com">valteralbino@gmail.com</a>&gt; escreveu no dia \
segunda, 16/03/2020 Ã (s) 15:57:<br></div><blockquote class="gmail_quote" \
style="margin:0px 0px 0px 0.8ex;border-left:1px solid \
rgb(204,204,204);padding-left:1ex"><div dir="ltr">My fault =&gt; forget to write that \
the process was done in GRASS GIS, from QGIS. The temporary file is loaded by default \
and then i save it in some location.<div>Does it make sense?</div><div><br \
clear="all"><div><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div><div \
dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div \
dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div><span \
style="color:rgb(0,0,0)"><font size="1"><span \
style="background-color:rgb(255,255,255)"><span \
style="font-family:arial,helvetica,sans-serif">Cumprimentos,</span></span></font></span><b><span \
style="color:rgb(39,78,19)"><font size="1"><span \
style="background-color:rgb(255,255,255)"><span \
style="font-family:arial,helvetica,sans-serif"><br>Valter Albino \
-</span></span></font></span></b><span style="color:rgb(39,78,19)"><font \
size="1"><span style="background-color:rgb(255,255,255)"><span \
style="font-family:arial,helvetica,sans-serif"><b> </b>Geógrafo Físico, \
M.Sc.<span></span><span></span></span></span></font></span><b><span \
style="color:rgb(39,78,19)"><font size="1"><span \
style="background-color:rgb(255,255,255)"><span \
style="font-family:arial,helvetica,sans-serif"></span></span></font></span></b><br><b><span \
style="color:rgb(39,78,19)"><font size="1"><span \
style="background-color:rgb(255,255,255)"><span \
style="font-family:arial,helvetica,sans-serif"></span></span></font></span></b></div></div><div><span \
style="color:rgb(39,78,19)"><font size="1"><span \
style="background-color:rgb(255,255,255)"><span \
style="font-family:arial,helvetica,sans-serif">Modelação H&amp;H / </span><span \
style="font-family:arial,helvetica,sans-serif">Riscos ambientais / \
OT&amp;U<br></span></span></font></span></div><span style="color:rgb(39,78,19)"><font \
size="1"><span style="background-color:rgb(255,255,255)"><span \
style="font-family:arial,helvetica,sans-serif"><a \
href="http://www.valteralbino.wixsite.com/hydrodynamics" \
target="_blank">www.valteralbino.wixsite.com/hydrodynamics</a></span></span></font></s \
pan><br></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><br></div></div><br><div \
class="gmail_quote"><div dir="ltr" class="gmail_attr">Markus Neteler &lt;<a \
href="mailto:neteler@osgeo.org" target="_blank">neteler@osgeo.org</a>&gt; escreveu no \
dia segunda, 16/03/2020 Ã (s) 15:48:<br></div><blockquote class="gmail_quote" \
style="margin:0px 0px 0px 0.8ex;border-left:1px solid \
rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div \
dir="ltr">Hi,<br></div><br><div class="gmail_quote"><div dir="ltr" \
class="gmail_attr">On Mon, Mar 16, 2020 at 4:37 PM Valter Albino &lt;<a \
href="mailto:valteralbino@gmail.com" target="_blank">valteralbino@gmail.com</a>&gt; \
wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px \
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div \
dir="ltr"><div>Hi,</div><div><br></div><div>When converting from lines to raster \
using v.to.rast, the result is good when still a temporary file, but when i saved it, \
the lines are know disconnected:</div><div></div></div></blockquote><div><br></div><div>... \
what are your steps in detail?</div><div>v.to.rast generates directly a raster map, \
which temporary file do you refer to?</div><div>And when you export this raster map \
to e.g. GeoTIFF with r.out.gdal, it is done at the  resolution and extent of the \
computational region.</div><div><br></div><div>Pseudo-code</div><div><br></div><div>1. \
g.region .... set to desired raster resolution and extent (bounding box)</div><div>2. \
v.to.rast ....<br></div><div>3. r.out.gdal \
...<br></div><div><br></div><div>Best,</div><div>Markus<br></div></div></div> \
</blockquote></div> </blockquote></div>


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