Background Image

Menu: View->Background image
GiD allows an image to be used as a background for visualization purposes (the supported image formats are gif, png, jpeg, tiff, bmp, tga and ppm). There are the following options:

• Fit screen: an image will be shown in GiD's background window; it will be modified if necessary so that it fills the graphical window correctly.
• Real size: the image will not be deformed; the image is placed in a plane. Three points must be entered: two of them to define the line where the bottom line of the image lies, and a stand-up point, which defines the upper direction of the image.

If a file with the same name as the image, and the appropriated extension exists, it is used to georeference the image
The extension must be:

• • • tif or tiff --> .tfw
    • jpg or jpeg --> .jgw
    • png --> .pgw
    • gif --> .gfw
    • bmp --> .bpw

the content of this ASCII file must be:
Mxx
Myx
Mxy
Myy
Dx
Dy
The image coordinates are calculated as:
x'=Mxx*x+Mxy*y+Dx
y'=Myx*x+Myy*y+Dy

• Default: use this option to restore the default background.
• Show: checkbutton to set to show or not the current background image.

Background images are saved with the model from the 10.1.2d version