Very helpful. I agree about batch process, for me I am just starting out with it.
I wish the NDA had a different approach re DNC. This world is getting smaller and smaller and pretty soon there will be more streamlined database I think.
Charts tailored for sailors with small boats and relatively shallow drafts. We are primarily interested in coastal features 50'deep and less. We are more interested monitoring changes in depth
between 20-0. We need navigation
aids, place names, current
and tide. In deep areas >50' it might be nice to have some contours and general depths, but full details are not necessary.
It is too bad that in this digital age, we cannot have a system of charts that makes sense and works efficiently. Vector charts and ENC
is a good move, -but companies similar to Simrad
, provide generalized information on their plotters, leaving out harbor depths! (Chartplotters are slow computers
. Why pay those prices for waterproof and daylight screens when we can get it on a smart phone
The digital chart guys/goverments/etc are doing the same thing Simrad
does too, slice and dice information in small pieces and proprietary formats to drive profit.
If we all had depth/gps recorders (tide?) and uploaded to a central website across the world, (like MarineTraffic for AIS) and automatically recorded on a chart layer in standard format and on a common website, we'd have the world's main areas recorded in no time.
Chart technology: If our on board vector charts were recorded in sufficient detail for close scale, but had a generalization routine which simplified fractals and dropped out detail and information as one zooms out (writing it to a temporary file for reuse at say, 2-3 set scales) then we would have faster operation and smaller files. If the charts had only the information we need, (see above) they would be smaller.
If our software
sensed areas which were of interest (center of the screen
or following the cursor with some distance out) and filled in that detail appropriately, there would not be the same need for redraw and graphics speed.
It seems to me that the government
and independent sellers are trying to compile comprehensive data we do not need (we aren't fishermen who really must have 3d) and insist on selling it in very small pieces. This is not the form or type of data I am willing to pay for!
It seems to me that an entire market is being missed, and it is an opportunity for someone to address culling the worldwide digital data available. Okay. -I've finished grumping.
I just ask one other question, with compiled data and multiple reversioning, translating, reconfiguring, joining, stiching, dropping data, simplifying data that can dropped, stitching, compressing, combining with other data, changing line weights and colors, etc is there a point at which copyrights lose meaning?
There are several links I find nteresting. Chart 51002
belpw it says "NOTE: Use the official, full scale NGA nautical chart for real navigation
whenever possible. These are available from authorized NGA nautical chart sales agents. Screen
captures of the on-line viewable charts available here do NOT fulfill chart carriage requirements for regulated commercial
vessels under Titles 33 and 46 of the Code of Federal Regulations
I have not figured out how to save it, adobe seems to have developed greater security
. The other related link is Region 5 - Western Africa, Mediterranean, Black Sea NGA Nautical Charts
The other ones are
" + theTitle + "
Informing Coastal and Marine Spatial Planning Efforts with Authoritative Data - In Action - Digital Coast
Multipurpose Marine Cadastre - NOAA Coastal Services Center
Is there any way we can get authorized to use DNC charts?
have a dll plugin for DNC?
These are probably pretty nutty questions, but I had to ask.
I apologize if this is considered off topic.