From time to time, you will need to use a raster map registered in one projection in another map in different projection. You can reproject the raster image, that is, change the coordinate system and the way the raster image displays to accommodate the new vector map. Typically, the open map dictates the projection of the successively displayed images. You can also reproject the raster using the projection of a vector table.
Reprojecting a Raster based on a Vector Map
If you are working with registered raster data such as satellite and aerial photo images, scanned maps, grids, seamless tables, WMS, or WMTS data, you might want to reproject that raster data to accommodate a vector map.
MapInfo Pro performs the raster reprojection when you open a registered raster image inside of an existing Map window with a different projection or when you change the projection of a Map window. During the raster reprojection process, MapInfo Pro recalculates the pixel values of the source image to make them display correctly in the destination image. In this resampling process, MapInfo Pro tries to restore every pixel value of the image based on the pixels around it. In MapInfo Pro there are two methods for calculating the pixel values of the destination image: Cubic Convolution and Nearest Neighbor. These are industry-standard terms used by GIS professionals all over the world. These methods are described later in this section.
Due to this feature, these are the precedence rules for Map window projection.
Both vector and raster layers have "equal rights", that is, every new layer (without regard for type) is reprojected into the current Map window's projection. That is, which ever map is opened first takes precedence for projection.
MapInfo Pro does not let you change the projection or image processing/reprojection of a map that displays raster images from a tile server, because this would create inaccuracies in your map. The projection system of the data may vary between tile servers. For this reason, we do not recommend displaying tiles from different tile servers in the same map unless the tile servers use the same projection system.
When you are working with palette raster images (like a scanned map), an image might contain all 256 colors. If you display this image in the Adjust Image Styles dialog box and clear the Transparent check box, the color "white" becomes transparent. If you do not want this display behavior, select the Transparent check box and choose another transparent color (using Select Color).