[Proj] Proj binary input and output
Gerald I. Evenden
gerald.evenden at verizon.net
Fri Aug 19 21:33:48 EDT 2005
One point I didn't think of on the first email: is your binary data in
proj/lproj does not do deg-to-radian conversion with binary data.
Otherwise, your following usage looks OK.
On Fri, 2005-08-19 at 14:55 -0700, pw wrote:
> My test file is a double precision binary file with
> lonlatlonlat...(113000 times)
> /*binary file -> [proj] -> binary -> [invproj] -> text*/
> proj +proj=utm +zone=17 +ellps=WGS84 -b binary_file.bin | \
> proj -I -i +proj=utm +zone=17 +ellps=WGS84
> /*binary to text*/
> proj +proj=utm +zone=17 +ellps=WGS84 -i binary_file.bin
> Both of these give me poor output under MS Windows.
> I haven't tried this under linux yet. That would tell me
> if the problem is with my VC 5 build under MS windows, although
> the default struct alignment/packing is 8 bytes which should
> be totally copacetic with the struct UV anyway since doubles are
> 8 bytes.
> I was curious as to whether binary files were currently
> supported (tested?) since this is treated in only a passing
> manner in the docs.
> If my command line is correct above, then my build must be wrong.
> I will check my linux build to see if it responds in the same
Jerry and the Low Riders: Daisy Mae and Joshua
"The most certain test by which we judge whether a country is
really free is the amount of security enjoyed by minorities"
---Lord Acton, 1907
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