PNG (Palette) (*.png)

PNG is a lossless data compression format but only supports a single image layer. It is a memory based dataset and typically has the extension *.PNG.

Select File > Export > Export to File and select PNG (Palette)

Option Description

Pixel Size

Specify the image resolution- simply click to open the drop-down menu.

Image Width/Height

Specify the output file size in pixels for width and height and the pixel size is in map units.

Colour Palette

Algorithm used to generate the colour palette, select from 5x5x5 Colour Cube, 6x6x6 Colour Cube, Neural Network Quantization, Oct Tree.

Create Worldfile True or False, to create worldfile containing georeferencing information.

Deflate Level

Select compression level, 1 to 9.

Dithering Algorithm

Select from Dither (GDI), Floyd-Steinberg, SIS, Snap (GDI), Snap (Palette).

Arguments to Export API Method

  • clsExport$
    PNGPalette_GDALExporter

Compatibility:

  • Cadcorp SIS Desktop
  • Cadcorp SIS ActiveX Modeller
  • Cadcorp SIS ActiveX Manager