Advanced image settings
The Advanced image settings can be accessed from the screen which is available prior to the rendering by clicking on the “Advanced options” button.
There are several options to be set.
For tile formats in command-line, see the MapTiler manual.
The produced tiles can be saved in one of several image format. MapTiler includes optimization of the final file size and uses a number of colors (quantization) to minimize the disk size occupied by the rendered maps as well as optimize the data transfer between clients and server once the tiles are served online.
Formats which support transparency are:
Non-transparent formats are:
You can also set the output format quality, which can save the space on your hard drive.
If you need to render generate hybrid tile format (where tiles are different formats, one with transparency and one without), check the MapTiler manual.
Detailed information about resampling methods is available in MapTiler manual.
The visual quality of the output tiles is also defined by the resampling method. Selected method is used for interpolation of the values of individual pixels and it affects the sharpness vs smoothness of the produced maps.
For transparency settings in command-line, see MapTiler manual.
This option is typically used to eliminate borders of multiple map sheets that are stitched together. You can set a specific color of the map to be considered fully transparent during rendering.
If you set the “Ignore alpha channel (4th band)” check button on, the alpha channel from input images will be ignored.
Detailed information about tiling scheme is available in MapTiler manual.