International hydrographic organization specifications for chart content and display aspects of ecdis



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S-52 Appendix 2 - IHO
S-52 Appendix 2 - IHO
src_file
= the input file, which contains a list of colours that were measured on the target monitor. These colours are supplied in a Microsoft Windows style database file, which has sections labeled with the colour table names (see below, and colours with the measured values. For an example, study the following excerpt from a CHECKXYL source file
[DAY_BRIGHT]
NODTA=0.279499;0.309014;44.893479
CURSR=0.520329;0.389384;28.026698 Here we see a colour called NODTA, with the x, y and L values stored in a semicolon separated list, for the DAY_BRIGHT colour table. NODTA will be compared against the original values stored in the Presentation Library file see below.
pres_lib
= the Presentation Library file, which has the format specified by Sb destfileb = the generated file which contains a list of out of spec. colours (which differ from the desired colours listed in the presentation library file, the non- distinguishable colours, as well as colours which differ greatly in luminance values from their intended values. If a destination file with the same name already exists, the existing file will be renamed to its current name, with the last character in the filename changed to a 0. For example, if the output_file argument was "OUT.LIB", and this file already existed, the existing file would be renamed to "OUT.LI0" before writing the new colour table information.
config_file = a configuration file (optional argument) which contains the monitor's characteristics, formatting strings, gamma function values, etc. This file is described below. If this command line argument is not specified, the default file is CHECKXYL.INI Configuration File Format This file is a standard Microsoft Windows initialization file format, which is a convenient method of storing simple database values. The database is divided into headings, and key values are stored under each heading. For example, CHECKXYL's configuration file has a heading called "general, under which key values such as the E and C thresholds are stored. The following is an annotated copy of a sample configuration file

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