Richard Welty <rwe...@averillpark.net> writes: > is this practical? image import wants a tfw file which i don't have; > i have the tfwx and aux files instead.
I am not familiar with tfwx. I would guess wildly that it's an XML version of tfw, because a file with a few numbers isn't cool anymore. The longstanding geotiff norm is a tiff and a tfw. A tfw for an arbitrarily-selected DRG within "boston west" is: 10.15999961 0.00000000 0.00000000 -10.15999961 248898.44273176 4712074.36193996 If you have the corresponding data, then creating a tfw is pretty easy mechanically. Description on wikipedia, or probably see the geotiff sources. https://en.wikipedia.org/wiki/World_file In the case above, I am pretty sure the coordinates are in NAD83 zone 19 UTM - this is a rasterized version of the USGS 1:25000 metric topos, back when you had to pay them for copies on CD (20 years ago IIRC). If you want to send me your image, tfwx and aux offline, I'm happy to look at them.
