Thanks Nicolas, yes, I'm aware of those properties. What I'm trying to work out is how QGIS does this so I can use it outside of QGIS in another program. Some pointers to the sort of questions I should be asking google on transparency would be handy.
Thanks On Thu, Sep 10, 2015 at 10:33 AM, Nicolas Cadieux < [email protected]> wrote: > Hi, > > In your raster properties, you can render layers using various methods > like add, multiply... It works very well. Same options are available for > vector layer and objects. > > Nicolas Cadieux M.Sc. > Les Entreprises Archéotec inc. > 8548, rue Saint-Denis Montréal H2P 2H2 > Téléphone: 514.381.5112 Fax: 514.381.4995 > www.archeotec.ca > On Sep 9, 2015 7:51 PM, "Matt Boyd [via OSGeo.org]" <[hidden email] > <http:///user/SendEmail.jtp?type=node&node=5223435&i=0>> wrote: > > Hi Group, > this is possibly one of those questions about a question. I'd like to > create some blended layers that look the same as layers in QGIS with > transparency applied. > I've another application that my data lives in and they supply a > calculator that's able to do some fairly reasonable maths on different > grids and other types of data. > > How does QGIS do transparency, and can I use those equations / method > elsewhere. > > Thanks > Matt > > _______________________________________________ > Qgis-user mailing list > <a > href="/user/SendEmail.jtp?type=node&node=5223433&i=0">[hidden > email] > http://lists.osgeo.org/mailman/listinfo/qgis-user > > ------------------------------ > If you reply to this email, your message will be added to the discussion > below: > http://osgeo-org.1560.x6.nabble.com/Blending-layers-question-tp5223433.html > To start a new topic under Quantum GIS - User, email > [email protected] > To unsubscribe from Quantum GIS - User, <a href=" > http://osgeo-org.1560.x6.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=4125267&code=bmljb2xhcy5jYWRpZXV4QGFyY2hlb3RlYy5jYXw0MTI1MjY3fDYzNDQ4MjQxNg==";>click > here. > <a href=" > http://osgeo-org.1560.x6.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml > <http://osgeo-org.1560.x6.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id&%2361;instant_html%21nabble%3Aemail.naml&base&%2361;nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs&%2361;notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml>" > style="font:9px serif">NAML > > > ------------------------------ > View this message in context: Re: Blending layers question > <http://osgeo-org.1560.x6.nabble.com/Blending-layers-question-tp5223433p5223435.html> > Sent from the Quantum GIS - User mailing list archive > <http://osgeo-org.1560.x6.nabble.com/Quantum-GIS-User-f4125267.html> at > Nabble.com. > > _______________________________________________ > Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user >
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