Only one command line in PROJ.4

Question

I would like to know if there are a way to write only one command line to obtain the expected results. I explain:

When you write this :

$ proj +proj=utm +zone=13 +ellps=WGS84 -f %12.6f

If you want to recieved the output data:

500000.000000 4427757.218739

You must to write in another line with the input data:

-105 40

Is it possible to write concatenated command line as this stile?:

$ proj +proj=utm +zone=13 +ellps=WGS84 -f %12.6f | -105 40

Thank you

Answer 1

I also ran into this problem and found the solution:

echo -105 40 | proj +proj=utm +zone=13 +ellps=WGS84 -f %12.6f

That should do the trick.

If you need to do this e.g. from within c#, the command you'd use is this:

cmd.exe /c echo -105 40 | proj +proj=utm +zone=13 +ellps=WGS84 -f %12.6f

Note: you may need to double up the % as the command processor interprets this as a variable.