How do I make a batch file to read a lines in a .txt file, and write that file in another batch program. I have NMEA code from GPS unit and here is an example. $GPGGA,161229.487,3723.2475,N,12158.3416,W,1,07,1.0,9.0,M,,,,0000*18 The [ 3723.2475,N,12158.3416,W ] is the latitude and longitude locations.

"read a lines" Not clear what's needed. You want a bat to create another bat? Based on what? ===================================== If at first you don't succeed, you're about average. M2

Ah sorry, I had alot of stuff going on when I typed that. Anyways I have a .bat file that will create a .jpw file which is a .jpg world file. A world file is a txt file with 6 lines that give a mapping application direction where to place a jpg image spatially. World Files look like this; Line 1: pixel size in the x-direction in map units/pixel Line 2: rotation about y-axis Line 3: rotation about x-axis Line 4: pixel size in the y-direction in map units, almost always negative[3] Line 5: x-coordinate of upper left pixel Line 6: y-coordinate of the upper left pixel i.e 1.0000 0.0000 0.0000 -1.0000 42.0000 70.0000 I would like to have the x and y coordinates taken from a NMEA line. Here is my Batch to create the world files: @echo off for /f "tokens=* delims= " %%A in ('dir *.jpg /b') do ( echo 0.000029528140317>> %%~nA.jgw echo 0.000000000000000>> %%~nA.jgw echo 0.000000000000000>> %%~nA.jgw echo -0.000029528140317>> %%~nA.jgw echo 42.000000000000000>> %%~nA.jgw echo 70.000000000000000>> %%~nA.jgw ) Any thoughts? Thanks

It looks like your bat will create a jpw for each jpg. But I'm missing the question or problem. ===================================== If at first you don't succeed, you're about average. M2

Yup that program does create a jgw file for every jgp. What I would like to do is have the Latitude and Longitude numbers be retrieved from a different txt file that contains the NMEA strings.

Retrieve the same lat & long for each jpw? ===================================== If at first you don't succeed, you're about average. M2

Nope, each .jgw is going to have a different Lat and long. The lat and long values ill come from a different text file, lets call it GPS.txt. Each line in the GPS.txt will have a different set of lat and long. ie 42.578, 70.321 42.581, 70.438 42.765, 70.474 so on and so forth Sorry for not being clear enough.