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Version 1.0 F J Brown, I McLeman, D R Catlow 04-June-1988
First issue of DTMCONVERT reference documentation.
Version 1.1 D R Catlow 09-June-1988
Examples and error messages for DTEDIFF added to the chapter on Module DTEDIFF.
Version 1.2 D R Catlow, A D Trigg 24-August-1988
NTF2DTI chapter modified to reflect introduction of LSLA type DTI header. IIS2DTI and DTI2IIS chapters added.
Version 1.3 D R Catlow 06-March-1989
IIS2DTI and DTI2IIS chapters modified to correct a number of minor errors.
Version 1.4 R J Hulme 30-October-1989
Minor changes to the DTED2DTI chapter to explain that the program will now cope with records which are offset from the SW corner, setting the posts in the area for which there is no data to null.
Version 1.5 A P Brown 1-November-1989
Two new chapters for DEM2DTI and DTI2DEM added. Both way conversion between USGS DEM format and DTI files.
Version 1.6 C C Brunt 6-January-1990
DTI2DTED chapter changed to include DENSITY command, and omit the ENABLE/DISABLE PME command.
Version 1.7 C C Brunt 6-January-1990
No changes.
Version 1.8 S Townrow 21-August-1990
New chapter MNT2DTI added for a utility to convert from an IGN MNT file to a DTI file.
Version 1.9 S Gupta 20-August-1991
Modified chapter on NTF2DTI to reflect enhancement of NTF2DTI to be able to read NTF datasets from disk files in addition to being able to read from a magnetic tape device.
Version 2.0 S Gupta 10-September-1991
Modified chapter on NTF2DTI.
Version 2.1 S Gupta 16-September-1991
Created new utility DTI2NTF. Created reference documentation and added chapter to reference manual.
Version 2.2 J Barber 15-October-1991
DTI2NTF message section added.
Version 2.3 J Barber 18-May-1992
DTI2NTF qualifier /DENSITY can now take a value of 6250 bpi.
DTI2IIS new qualifier /HEADER to specify how many 512 byte header blocks to write to the IIS file.
IIS2DTI new qualifier /HEADER to specify how many 512 byte header blocks to expect in the IIS file.
Version 2.4 J Barber 10-June-1992
NTF2DTI now reads NTF level 1.1 with variable length records.
IIS2DTI has a new qualifier /WIDTH to specify that the program is to read data in an extension to the 500 format with only one swathe across the dataset. The /WIDTH qualifier specifies the number of bytes per record, equal to the number of columns in the dataset.
Version 2.5 J Cadogan 18-December-1992
NTF2DTI can now read datasets which span multiple tape volumes. This is described in the new subsection Handling multiple volume datasets in the DESCRIPTION section.
Version 2.6 J Barber 09-July-1993
NTF2DTI can now read Version 2.0 level 5 NTF data.
DTI2NTF can now write Version 2.0 level 5 NTF data.
DTI2NTF new qualifier /VERSION = 'real'.
Version 2.7 J Cadogan 18-December-1996
DTED2DTI now has ENABLE/DISABLE FULL and SHOW FULL commands.