<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
p.msonormal0, li.msonormal0, div.msonormal0
{mso-style-name:msonormal;
mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 70.85pt 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="NO-BOK" link="#0563C1" vlink="#954F72">
<div class="WordSection1">
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hi Laura,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">There are several options.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">One option would be to subdivide “</span><span lang="EN-GB">ENVIROMENTAL_COVARIATES” into e.g. topics.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">In my organisation (also environmental research) we organized mapsets with prefixes (g_ for mapsets of general interest, gt_ for time series, p_ for projects, u_ for users). Different users can take care of different
topics (but everybody has to clean up his/her own mess).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">These mapsets can then easily added to the users search_path with g.mapsets (<a href="https://grass.osgeo.org/grass74/manuals/g.mapsets.html">https://grass.osgeo.org/grass74/manuals/g.mapsets.html</a>)…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">An advantage of splitting up ENVIROMENTAL_COVARIATES into smaller mapsets is that it is easier to move chunks of data (e.g. from central storage to compute units (laptop/server))…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">If your users are allowed to change file ownership, they could in principle take over “</span><span lang="EN-GB">ENVIROMENTAL_COVARIATES”. However, an important point of the ownership
check implemented in GRASS is to make sure that users do not shoot each others in the foot…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">That check can be overwritten with the GRASS_SKIP_MAPSET_OWNER_CHECK environment variable (see:
<a href="https://grass.osgeo.org/grass74/manuals/variables.html">https://grass.osgeo.org/grass74/manuals/variables.html</a>)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">See also the related issue:
<a href="https://trac.osgeo.org/grass/ticket/1829">https://trac.osgeo.org/grass/ticket/1829</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">For both of the latter options there is a significant risk in a multi-user environment…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Hope that helps a bit…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Cheers<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Stefan<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> grass-user <grass-user-bounces@lists.osgeo.org>
<b>On Behalf Of </b>Laura Poggio<br>
<b>Sent:</b> onsdag 6. februar 2019 12:22<br>
<b>To:</b> GRASS user list <grass-user@lists.osgeo.org><br>
<b>Subject:</b> [GRASS-user] sharing GRASS mapsets<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Dear all,<o:p></o:p></p>
<div>
<p class="MsoNormal">we need to share a GRASS location and its mapsets across multiple users.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">We would like to have a structure similar to this:<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">LOCATION:<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> PERMANENT<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> ENVIROMENTAL_COVARIATES<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> working_mapset_for_each_user<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">It is clear in the documentation that a user can only write in a mapset that it owns. <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">However we would need to have multiple users to be able to add/delete/modify files to the ENVIROMENTAL_COVARIATES mapset. Is this possible at all? any workaround that can be implemented?<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Thanks in advance<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Laura<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</div>
</div>
</body>
</html>