Raster layers: Difference between revisions

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[[File:raster black.png|none]] For raster layers there are few settings besides the visibility and scale limits described in [[Basemaps and overlays#Managing layers|Basemaps and overlays]]. In map signatures which use GeoPackage files, settings are input as parameters in the map import process, and can't be changed later.
[[File:raster black.png|none]] For raster layers there are few settings besides the visibility and zoom extents described in [[Basemaps and overlays#Managing layers|Basemaps and overlays]]. In datasets which use GeoPackage files, most settings are input as parameters in the map import process, and can't be changed later.


In layers with Map signatures which use source files such as ECW or MrSID, there are a few settings available. You can reach them by expanding the raster layer and opening the advanced properties for the sub-level.
If you have thematic raster data where the pixels should have precise values, you can change the rendering resampling method in the '''Appearance''' tab. Setting the '''Resampling''' parameter to ''Nearest'' will render each pixel as it is when zooming in past the native zoom level.  


The '''Rendering''' tab lets you choose which resampling method to use when drawing the map. This will affect performance (see [[core_raster_resampling_methods.html|this page]] for a comparison of how the different methods perform in Maria GDK.)
[[File:M3_rasterlayer_appearance.PNG|769px]]


The remaining settings should not be necessary to change, as they should be set correctly when the map was imported.
[[File:M3_rasterlayer_appearance_linear.PNG]]
[[File:M3_rasterlayer_appearance_nearest.PNG]]


[[Category:Maria Map Maker|570]]
[[Category:Maria Map Maker|570]]

Latest revision as of 14:49, 7 July 2022

Raster black.png

For raster layers there are few settings besides the visibility and zoom extents described in Basemaps and overlays. In datasets which use GeoPackage files, most settings are input as parameters in the map import process, and can't be changed later.

If you have thematic raster data where the pixels should have precise values, you can change the rendering resampling method in the Appearance tab. Setting the Resampling parameter to Nearest will render each pixel as it is when zooming in past the native zoom level.

M3 rasterlayer appearance.PNG

M3 rasterlayer appearance linear.PNG M3 rasterlayer appearance nearest.PNG