[QGIS-Developer] Looking for description for the "Zoom to native resolution" tool

[DelazJ]

Hi,
Thanks for your quick replies (and inputs in the PR), guys
Richard, seems it's more about pairing a pixel on the raster with a pixel
on the screen. And indeed it works with "simple" raster also.

Regards,
Harrissou

Le mar. 19 janv. 2021 à 17:30, Richard Duivenvoorde <rdmailings at duif.net> a
écrit :

> On 1/19/21 5:19 PM, DelazJ wrote:
> > Hi devs,
> >
> > Can any of you help us understand what the "Zoom to native resolution
> (100%)" tool in map navigation toolbar or View menu does, please?
> > It would help us close
> https://github.com/qgis/QGIS-Documentation/pull/6441 <
> https://github.com/qgis/QGIS-Documentation/pull/6441>
>
> This is mainly relevant to WMTS/xyz and other tiled images based (online)
> data sources (for what I know).
>
> Because those tiles actually are server side cached, they have off course
> one true resolution: in which a 256x256px tile is shown on a 256x256px area
> of the mapcanvas.
>
> When you load such layers in QGIS, QGIS can rescale those tiles, they will
> be rescaled then, often not making the image prettier.
>
> The idea of the native resolution is for what I know: select the tiled
> layer, the select the "Zoom to native resolution (100%)" and then QGIS will
> switch to one of the (native) zoom level scales of the tiled layer.
> It more or less works the same as with the Tile Slider.
>
> Maybe (others plz confirm) this also works this way for raster images like
> geotiffs...
>
> Hope this helps,
>
> Regards,
>
> Richard Duivenvoorde
> _______________________________________________
> QGIS-Developer mailing list
> QGIS-Developer at lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-developer/attachments/20210119/bb7349e4/attachment.html>