<p dir="ltr">Not sure. Where do you see that? A Mask is usually a raster file with zeros and ones. It will permit you to cut or modify another raster to a specific shape by multiplying it to the mask. I imagine a validity mask is asked if you what to first validate an area you want to modify. </p>
<p dir="ltr">Nicolas Cadieux M.Sc.<br>
Les Entreprises Archéotec inc. <br>
8548, rue Saint-Denis Montréal H2P 2H2<br>
Téléphone: 514.381.5112 Fax: 514.381.4995<br>
www.archeotec.ca</p>
<div class="gmail_quote">On Apr 23, 2015 8:36 AM, "Larissa Junek [via OSGeo.org]" <<a href="/user/SendEmail.jtp?type=node&node=5202680&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>> wrote:<br type='attribution'><blockquote style='border-left:2px solid #CCCCCC;padding:0 1em' class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hello Nicolas,
<br />can you tell me what the validity mask is and what's it for?
<br /><br />Am Thu, 23 Apr 2015 13:31:56 +0200
<br />schrieb Larissa Junek <<a href="/user/SendEmail.jtp?type=node&node=5202645&i=0">[hidden email]</a>>:
<br /><div><div class='shrinkable-quote'><br />> Hello Nicolas,
<br />> I have further questions concerning the use of the algorithm!
<br />>
<br />> Am Wed, 22 Apr 2015 12:00:03 -0700 (PDT)
<br />> schrieb Nicolas Cadieux <<a href="/user/SendEmail.jtp?type=node&node=5202645&i=1">[hidden email]</a>>:
<br />>
<br />> > Hi,
<br />> > I believe so but I usually use the .tiff format. Just
<br />> > make sure the "null data" value is specified in the raster. You can
<br />> > do that under the "save as". Specifying additional null
<br />> > value in the layer properties does not work.
<br />> Is it right that the no-data values must be represented by 0 so that
<br />> the interpolation works properly then?
<br />>
<br />> Nicolas
<br />> > Cadieux M.Sc. Les Entreprises Archéotec inc.  8548, rue
<br />> > Saint-Denis Montréal H2P 2H2
<br />> > Téléphone: 514.381.5112  Fax: 514.381.4995
<br />> > www.archeotec.ca On Apr 22, 2015 9:50 AM, "Larissa Junek [via
<br />> > OSGeo.org]" <<a href="/user/SendEmail.jtp?type=node&node=5202645&i=2">[hidden email]</a>>
<br />> > wrote:
<br />> >
<br />> > Hello,
<br />> > does someone know if you can use any GDAL-supported raster layer
<br />> > with the Processing Fill nodata Algorithm?
<br />> > Kinde regards,
<br />> > Larissa
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