[Qgis-developer] master slow reading rasters?

Paolo Cavallini cavallini at faunalia.it
Fri Mar 21 04:47:45 PDT 2014

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Il 21/03/2014 12:42, Martin Dobias ha scritto:

> What happens is that first the previously rendered image is shown
> zoomed in, then in next map update (by default 250ms) it shows the
> newly rendered map. If it takes longer to render the layer, it may
> happen that empty map is shown. I guess this can be solved by keeping
> the preview from previous rendering for each layer until there is
> sufficient amount of new data to show.

agreed, this would probably give a better user experience

> Yes this is a side effect of MTR. I have removed the downloading
> progress from status bar, because the situation is more complex now -
> there could be more such requests at the same time and the existing
> mechanism wasn't flexible enough to reflect that. I am thinking about
> having some better progress reporting, maybe something to discuss at
> the hackfest.

ok, ready. giving no feedback at all can be really bad, especially in case of slow
connection, or server issues.

all the best.
- -- 
Paolo Cavallini - www.faunalia.eu
Corsi QGIS e PostGIS: http://www.faunalia.eu/training.html
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