I use raster equivalents of the Small Craft NOAA charts on my sailboat.
The chart data base display shows thw chart book number but does not
show Page A or B etc and I would like to add the appropriate page
letters so as to know which chart to select.
I seem to remember I asked this question some years (and many computers)
ago and someone suggested a Hex editor that did the job as long as the
number of characters on the title line was not changed. I downloaded
"GroovyHex" editor but cannot see how to use it for this purpose.
Dick

Richard Lane wrote:
I use raster equivalents of the Small Craft NOAA charts on my
sailboat. The chart data base display shows thw chart book number but
does not show Page A or B etc and I would like to add the appropriate
page letters so as to know which chart to select.
I seem to remember I asked this question some years (and many
computers) ago and someone suggested a Hex editor that did the job as
long as the number of characters on the title line was not changed. I
downloaded "GroovyHex" editor but cannot see how to use it for this
purpose.
Dick
Raster charts can be edited ad infinitum in Paintshop Pro or any other
graphics package.

Dennis Pogson wrote:
Richard Lane wrote:

I use raster equivalents of the Small Craft NOAA charts on my
sailboat. The chart data base display shows thw chart book number but
does not show Page A or B etc and I would like to add the appropriate
page letters so as to know which chart to select.
I seem to remember I asked this question some years (and many
computers) ago and someone suggested a Hex editor that did the job as
long as the number of characters on the title line was not changed. I
downloaded "GroovyHex" editor but cannot see how to use it for this
purpose.
Dick

Raster charts can be edited ad infinitum in Paintshop Pro or any other
graphics package.


I realize that I can edit the chart in a graphics package but then I
would have to re-digitize the edited chart in the .kap format that the
navigation software can access.
Dick

Dennis Pogson wrote:
Richard Lane wrote:

Dennis Pogson wrote:

Richard Lane wrote:


I use raster equivalents of the Small Craft NOAA charts on my
sailboat. The chart data base display shows thw chart book number
but does not show Page A or B etc and I would like to add the
appropriate page letters so as to know which chart to select.
I seem to remember I asked this question some years (and many
computers) ago and someone suggested a Hex editor that did the job
as long as the number of characters on the title line was not
changed. I downloaded "GroovyHex" editor but cannot see how to use
it for this purpose.
Dick

Raster charts can be edited ad infinitum in Paintshop Pro or any
other graphics package.



I realize that I can edit the chart in a graphics package but then I
would have to re-digitize the edited chart in the .kap format that the
navigation software can access.
Dick


Some nav. software, such as Oziexplorer, will allow you to overprint
anything at all, using the programme itself.


I just found to my surprise that Notepad will work at least on the chart
I tried but maybe it won't work on a larger chart file.
Dick

Richard Lane wrote:
Dennis Pogson wrote:
Richard Lane wrote:

I use raster equivalents of the Small Craft NOAA charts on my
sailboat. The chart data base display shows thw chart book number
but does not show Page A or B etc and I would like to add the
appropriate page letters so as to know which chart to select.
I seem to remember I asked this question some years (and many
computers) ago and someone suggested a Hex editor that did the job
as long as the number of characters on the title line was not
changed. I downloaded "GroovyHex" editor but cannot see how to use
it for this purpose.
Dick

Raster charts can be edited ad infinitum in Paintshop Pro or any
other graphics package.


I realize that I can edit the chart in a graphics package but then I
would have to re-digitize the edited chart in the .kap format that the
navigation software can access.
Dick

Some nav. software, such as Oziexplorer, will allow you to overprint
anything at all, using the programme itself.

Richard Lane wrote:

snip
I realize that I can edit the chart in a graphics package but then I
would have to re-digitize the edited chart in the .kap format that the
navigation software can access.

For purposes of the chart list, isn't there a companion file in ascii
text that contains a lot of specifics about the raster image? Lists the
stuff about the projection, calibration, etc.?

If your software is building the chart data base list, it may be getting
the chart names from that ascii file and maybe you can edit the names
there. I sort of doubt that it would be reading the chart name from the
raster images.

Jack

--
Jack Erbes in Ellsworth, Maine, USA - jackerbes at adelphia dot net
(also receiving email at jacker at midmaine.com)

Jack Erbes wrote:
Richard Lane wrote:

snip

I realize that I can edit the chart in a graphics package but then I
would have to re-digitize the edited chart in the .kap format that the
navigation software can access.


For purposes of the chart list, isn't there a companion file in ascii
text that contains a lot of specifics about the raster image? Lists the
stuff about the projection, calibration, etc.?

If your software is building the chart data base list, it may be getting
the chart names from that ascii file and maybe you can edit the names
there. I sort of doubt that it would be reading the chart name from the
raster images.

Jack

I found that Notepad adds some non-printing characters to the file even
if I just load then save. I figured out how to use Groovy Hex Editor and
have inserted the appropriate page #s that the .kap charts are to be
found. It all works OK but thanks for your suggestions.
Dick