## DESCRIPTION

ximgview is a simple X11 image viewer for 32-bpp BMP images, as can be created with the PNG and cairo drivers. The display is continually refreshed.

## NOTES

The display driver must be configure to map the file, with GRASS_RENDER_FILE_MAPPED=TRUE. This ensures that the file will remain a constant size, rather than being truncated whenever it is updated.

## EXAMPLE

(bash shell syntax)

    export GRASS_RENDER_FILE=map.bmp
    export GRASS_RENDER_WIDTH=640
    export GRASS_RENDER_HEIGHT=480
    export GRASS_RENDER_IMMEDIATE=PNG
    export GRASS_RENDER_FILE_MAPPED=TRUE
    export GRASS_RENDER_FILE_READ=TRUE

    d.erase
    ximgview $GRASS_RENDER_FILE percent=50 &
    d.rast elevation.dem
    d.vect roads

## SEE ALSO

PNG driver, cairo driver, wxpyimgview
variables

## AUTHOR

Glynn Clements