dpPower > Menu reference > File > Export

Image format for export

•PNG ("Portable Network Graphics") is like its predecessor GIF a type of non-destructive compression. This means that an image compressed as PNG will be the same as the original after decompression. PNG works best on images with large, solid areas. It is also possible to compress, for example, photographs into PNG, but JPEG is a much more efficient format for photographs.

•JPEG (or JPG) ("Joint Photographic Experts Group") is a standard for destructive compression of digital images, especially photographs. For the right kind of images, JPEG can provide a very good degree of compression while maintaining quality. JPEG, on the other hand, should not be used on drawings or computer-generated images with straight lines and sharp contrasts, where the degree of compression will be very low if the image quality is not to deteriorate too much.

•GIF ("Graphics Interchange Format") is a non-destructive image compression. In addition, since a GIF image can only contain 256 colors, not all graphic material can be published as GIF images without a drastic reduction in quality.

•GIF is an aging standard with a number of technical limitations. As a replacement for GIF, the standard PNG has been developed, which is more powerful and provides a slightly more efficient compression.

•BMP ("BitMaP") is a non-destructive, non-compressive file format developed by Microsoft. Because the images are not compressed, the files become very large and therefore this format is not recommended.

•WBMP ("Wireless BitMap") is also a non-destructive, non-compressing file format. It is optimized for mobile devices and to keep the files as small as possible, the images are black and white.

Export image

1.Select File > Export > Image....

2.Select the starting point in the graphic view.

3.Select the end point in the graphic view. The Save window opens.

4.Select settings.

5.Press Save.

Settings

Save in

Enter directory where you want to save the file.

Advanced

Tick the box to get more options.

Here you can enter:

Meter per pixel	How many meters each pixel corresponds to.	Fixed size when dpi changes.
Scale 1:	Which scale the image should be saved in.	Amended by all other changes.
Greyscale	Select to save in grayscale (gives a smaller file).

You can also see:

Coverage on the ground	How large area the image corresponds to.	Fixed size specified by the rectangle being placed.
Uncompressed file size	What size the uncompressed image will have.	Fixed size when dpi changes.
Available memory	How much memory is available on the computer.

Image size (pixels)

Change the number of pixels in height or width.

The height and width are locked to each other, ie if you change one, the other will change as a percentage by the same amount.

Fixed size when dpi changes.

Paper size (cm)

Resize the print image.

Amended by all other changes.

Image resolution (dpi)

Change the resolution of the image. The resolution is specified in the number of pixels per inch ("dots per inch").

Not affected by other settings but affects print size and scale.

Set the resolution first!

Create world file

Select the check box to save a World file with georeferencing data along with the image file. The georeferencing in the World file contains information about coordinate pairs in the corner of the saved image and is used to fit and display the image in an (external) map window.

The World file is saved in the same directory as the image. It also gets the same name as the image file, but with the extension ".pwg" for PNG files and ".jgw" for JPEG files (".bpw" for BMP, ".wpw" for WBMP, ".gfw" for GIF) .

File name

Enter the name of the file to be exported.

Files of type

The format of the export file (preset value, depending on function selection).

Save

Save the file to the specified location in the directory structure.