Charts

[sinbad7]

I've converted another NZ .tif map, and although the tif2bsb utility also included the header,there is something very strange about the map boundaries which is showing a red triangle,omitting the top right co-ordinates.

I have checked and re checked all the co-ordinates and the x,y values and can find nothing wrong. For both the REG as well as the PLY values,I started with the bottom left map corner and moved around in a clockwise direction. I have attached the header file if anyone can find the problem.

The map displays normally in OpenCPN but as soon as the diagonal map outline is passed,it jumps to the next chart,which means I can not access anything to the right of the diagonal line in zoomed-in modes.

[sinbad7]

re my #121

I have tried to enter the co-ordinates in different sequences and I have re-checked all the entered data but I am not able to get the red chart outline for nz4314 to show correctly and now I can no longer display the map itself. There seems to be so much hit and miss about this conversion method,you are never sure what you will end up with.

I tried a first to enter all the REF and PLY co-ordinates in a clockwise direction starting with the bottom left map corner but it still does not work.

Appreciate assistance from anyone with know-how and the time to study the case.

[GPS-Marco]

Originally Posted by sinbad7

re my #121

I have tried to enter the co-ordinates in different sequences and I have re-checked all the entered data but I am not able to get the red chart outline for nz4314 to show correctly and now I can no longer display the map itself. There seems to be so much hit and miss about this conversion method,you are never sure what you will end up with.

I tried a first to enter all the REF and PLY co-ordinates in a clockwise direction starting with the bottom left map corner but it still does not work.

Appreciate assistance from anyone with know-how and the time to study the case.

Ciao,

I can try to help you but I need to know were I can get the map file.

Ciao, Marco.

[sinbad7]

Marco..

Thanks for offering to solve my problem.

You can download the nz4314.tif here:

I am back to where I started with the map displaying but showing a red triangle as the map outline. If I pass the diagonal line,the new map disappears.

[sinbad7]

Dave.. ref. my #121

The seamless transition between maps are I suppose governed by the setup of the chart outlines. This functions normally with all NOAA BSB type charts etc.
Could there be some extra information required in bsb/kap files which is not present
in the tif2bsb conversions? Seems the converted charts work sometimes, sometimes not?

[GPS-Marco]

Originally Posted by sinbad7

Marco..

Thanks for offering to solve my problem.

You can download the nz4314.tif here:

I am back to where I started with the map displaying but showing a red triangle as the map outline. If I pass the diagonal line,the new map disappears.

Hi, I started with NZ53.

1) downloaded NZ53.tif
2) saved NZ53.tif as NZ53.png (use GIMP, XnVIew, ...)
3) opened NZ53.png in MapCal and saved calibration & borders
4) manually translated CHARTCAL.DIR in NZ53template.kap
5) RUN: tif2bsb NZ53template.kap NZ53.tif NZ53.kap
6) put NZ53.kap in OCPN chart dir and deleted/reloaded chart dir in OCPN.

It worked at the first time without any problem

I attach the NZ53template.kap (I added a .doc to the name just for upload, remove the .doc after download) so you can just repeat step 1, 5, 6.

Enjoy, Marco.

[GPS-Marco]

Originally Posted by GPS-Marco

Hi, I started with NZ53.

1) downloaded NZ53.tif
2) saved NZ53.tif as NZ53.png (use GIMP, XnVIew, ...)
3) opened NZ53.png in MapCal and saved calibration & borders
4) manually translated CHARTCAL.DIR in NZ53template.kap
5) RUN: tif2bsb NZ53template.kap NZ53.tif NZ53.kap
6) put NZ53.kap in OCPN chart dir and deleted/reloaded chart dir in OCPN.

It worked at the first time without any problem

I attach the NZ53template.kap (I added a .doc to the name just for upload, remove the .doc after download) so you can just repeat step 1, 5, 6.

Enjoy, Marco.

Well, no problem also with NZ4314: same process, same success ;-)

I did a little more: I cut the small map on the lower right corner (LPG Terminal) and I process also that small map.

I attach the Final .KAP map (NZ4314_1.kap) of the LPG Terminal (I just ranamed it with a .doc for upload: download the file and remove the .doc)

I also attach the template (NZ4314template.kap) of the whole NZ3414 so you can create the NZ3414.kap by youself (from above process, just step 1, 5, 6 with NZ4314 instead of NZ53). Again: download the template and remove the .doc

Let me know.

Ciao, Marco.

[sinbad7]

Thanks Marco...

I am familiar with all the procedures and have converted several of these NZ charts successfully. When I run the CMD line,I often get error messages and sometimes I had to manually enter the header file,other times not.

I need to analyze my header file attached earlier to see where I'm going wrong.
I entered the geo loc and x,y parameters of the map corners starting at bottom left corner and ending bottom right,and the same for the PLY locations (without the x,y)

Are you using Vista or XP?? Perhaps there is a path problem with Vita?

[GPS-Marco]

Hi, did you check what I wrote in answer #108?

http://www.cruisersforum.com/forums/...&postcount=108

Ciao, Marco.

[sinbad7]

Marco..

Yes of course I read your #108. But as I said it does not work reliably for me on Vista
and I would like to find out why. The template you show is in Word, which is not a good idea because unwanted control characters may be added. I prefer using a hex editor.

I also do not understand why in one of your samples you are using all of 19 REF points and 9 PLY points??

I wish there was a user manual for the tif2bsb utility to show the correct entry sequence of the REF and PLY points etc. etc.

Thanks for your trying to help...

[dacust]

Originally Posted by sinbad7

The template you show is in Word, which is not a good idea because unwanted control characters may be added. I prefer using a hex editor.

Originally Posted by GPS-Marco

I attach the Final .KAP map (NZ4314_1.kap) of the LPG Terminal (I just ranamed it with a .doc for upload: download the file and remove the .doc)

Just rename the file Marco posted like they said...

[GPS-Marco]

Originally Posted by sinbad7

...
The template you show is in Word...
...
I also do not understand why in one of your samples you are using all of 19 REF points and 9 PLY points??
...

Hi,

1) as already said by dacust, I just add a .doc to the file name since I cannot upload .kap files. Remove the .doc from the file name and you have what you need.

2)
The REF points can be as many as you like (at least 3, I guess). More REF points you put, better will be the precision (expecially for non MERCATOR projections...). The REF points can be everywere in the map (in the center, on the border, werever)

The PLY points represent the border of the map. The are used to communicate were the map is usable and were it is not usable (the white border surrounding the map, the part of the map with the instruction, etc.) They must be 3 or more. If the usable map is a rectangle, put 4 PLY. If the shape of the usable part is more complex than a rectangle, put more PLYs.

This is an example of how to place REF and PLY



Ciao, Marco.

[dacust]

To elaborate on the PLY and REF usage, PLYs have to be in the exact order they appear on the line you are drawing. I haven't tried it, but I would figure the REF points do not need to be in any particular order.

-dan

[sinbad7]

Marco..

Thanks for your very explicit information.. I am familiar with creating calibration files for other nav progs where I normally use 3 points in a roughly equal triangle trying to avoid similar named lat or long. I mistakenly understood that tif2bsb required only geo locs from the map corners.

I also seem to have problems converting normal scanned maps and would appreciate your trying to create a sample map from the shown map details.

The nz test map.tif is in my dropbox as advised earlier.

Tore

[GPS-Marco]

Originally Posted by sinbad7

Marco..

Thanks for your very explicit information.. I am familiar with creating calibration files for other nav progs where I normally use 3 points in a roughly equal triangle trying to avoid similar named lat or long. I mistakenly understood that tif2bsb required only geo locs from the map corners.

I also seem to have problems converting normal scanned maps and would appreciate your trying to create a sample map from the shown map details.

The nz test map.tif is in my dropbox as advised earlier.

Tore

Tore,

The tif test image you are working on has 256 colours palette. This in NOT supported. Maximum number of colours is 127. You must convert the tif to 127 colours.

I use GIMP Portable, that run very well on windows:

GIMP Portable | PortableApps.com - Portable software for USB drives

To convert the file, load the image in GIMP, then you need to convert the image in 2 steps: to RGB and then to 127 colours. The commands in GIMP Italian menu is

1) Immagine->modalità->RGB
2) Immagine->modalità->Indicizzata->127 colori

After the image is convertet to (max) 127 colours, you can use the standard tif2bsb.exe with the attached template (download the file and delete the .doc from the file name)

Moreover, to handle text files I use Notepad++ that works on windows and handles both Windows text files and Unix text files.

http://notepad-plus.sourceforge.net

Ciao, Marco.