![]() Resampling method (average, near, bilinear, cubic, cubicspline, lanczos, antialias, mode, max, min, med, q1, q3) - default ‘average’. ![]() Placed in GDAL data directory (provided all zoom levels use same origin, tile dimensions,Īnd resolution between consecutive zoom levels vary by a factor of two). Starting with GDAL 3.2, additional profiles are available from tms_XXXX.json files Tile cutting profile (mercator, geodetic, raster) - default ‘mercator’ (Google Maps compatible). An example driver config option is GDAL_PDF_DPI, which can be found at Configuration options -p, -profile = World files and embedded georeferencing is used during tile generation, but youĬan publish a picture without proper georeferencing too.Ĭonfig options of the input drivers may have an effect on the output of gdal2tiles. SuperOverlay), in case the supplied map uses EPSG:4326 projection. GDAL2Tiles also creates the necessary metadata for Google Earth (KML You only need to upload the generated directory onto a web server. Special software (like MapServer) and the map displays very fast in the Google Maps, OpenLayers and Leaflet are generated as well - so anybody can comfortablyĮxplore your maps on-line and you do not need to install or configure any The OSGeo Tile Map Service Specification. This utility generates a directory with small tiles and metadata, following Also, the concept of hybrid tiles was presented.Gdal2tiles. These include setting the compression format, enabling transparency, and choosing the background color for a base map. This article explained the options for the output tile format available in MapTiler Engine. The chosen color will be used on all rendered tiles outside of your image. In case you need to set the background color of a map, you can use the button located in the right-hand side of the section. This setting is available for the JPEG and WebP tile formats. You can decrease its value to save space on your drive. It is a parameter passed to the compression algorithm. Large (lossless) - 24-bit PNG (color scheme RGB, 8bit per each band).Small (quantized) - 8-bit PNG (paletted RGB PNG image).Small (optimized) - 8-bit PNG (paletted RGB PNG image) optimized for rendering speed and output size - this is the default setting.Generating a base map (transparency off) Compression The combination of formats provided by MapTiler Engine is Small (optimized) PNG (8-bit paletted RGBA) for transparent tiles and JPEG for non-transparent ones. You can find this setting as one of the compression formats when transparency is on. It saves some tiles with transparency and some without. However, if you don’t want to sacrifice the transparency information, MapTiler Engine offers a solution to this problem - hybrid tiles. One obvious solution is to reduce the number of bits used to encode a pixel - choose a compressed format or get rid of the transparency channel. In some situations, you might want to reduce the size of the rendered map. This setting is available for the WebP tile format. Large (lossless) - 32-bit PNG (color scheme RGBA, 8bit per each band).Small (quantized) - 8-bit PNG (paletted RGBA PNG image).Small (optimized) - 8-bit PNG (paletted RGBA PNG image) optimized for rendering speed and output size - this is the default setting. ![]() When PNG is set as the output format, you can choose from two variants using the Size menu: Using the Compression menu, you can choose from several output tile formats that support storing transparency information: Generating a map overlay (transparency on) Compression If you want to generate a base map - choose the no (base map) option. ![]() If you need to produce an overlay that you’ll then present over a base map (or any other image layer for that matter) - choose the yes (map overlay) option.There are two different workflows you can choose from. Output tile format is one of its sections, and we’ll focus on it in this article. One of the steps you need to take during the rendering process is setting the parameters of the output tiles. In this article, you will learn how to use these settings to achieve the desired results. Choosing the right one will help you minimize the disk size occupied by the rendered maps as well as optimize the data transfer between clients and the server once the tiles are served online. Tiles produced by MapTiler Engine can be saved in one of several output image formats.
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