This is the S-52 Simplified section of the Portrayal Control File:
<PresentationOptions Type="S-52" Name="S-52 Simplified" Description= "S-52 Simplified Settings"> <LookupTables> <AreaLookup File="%S57Config%\symbolization\lookup\asymrefs.dic" SymbolizedBoundaries="True" /> <LineLookup File="%S57Config%\symbolization\lookup\lsymrefs.dic" /> <PointLookup File="%S57Config%\symbolization\lookup\psymrefs.dic" /> </LookupTables> <SymbolFiles Directory="%S57Config%\symbolization\symshow" /> <ColourFiles Directory="%S57Config%\symbolization\colcalib" /> </PresentationOptions> |
The following image shows how S-52 files are referenced in the Portrayal Control File are used to draw an Anchorage Area (ACHARE) point feature.
Because ACHARE is a point feature, information about it is read from the points lookup table (psymrefs.dic). This file is referenced in the <PointLookup/> tag in Portrayal Control File.
Below is the entry for ACHARE in psymrefs.dic.
"ACHARE","","SY(ACHARE02)","6","O","STANDARD","26220" |
The symbolization entry is SY(ACHARE02). This means that symbolization is derived from the ACHARE02 symbol file.
Symbol files for S-52 are stored in the symshow folder. This folder is referenced by the <SymbolFiles/> tag in Portrayal Control.
The symshow folder contains archare02.sym file. This is an example of that file:
SYMB 10SY02035NIL SYMD 39ACHARE02V012670105200402005030106100789 SXPO 90anchorage area as a point at small scale, or anchor points of mooring trot at large scale SCRF 6ACHMGD SVCT 32SPA;SW1;PU1264,789;PD1264,1291; SVCT 31SPA;SW1;PU1108,938;PD1412,938; SVCT 57SPA;SW1;PU1061,1188;PD1167,1292;PD1365,1292;PD1463,1191; |
Symbol files should be created or modified using the CARIS Symbol Editor. |
The SCRF (Symbol Colour Reference Field) field contains a colour token: CHMGD. Colour tokens for S-52 are stored in the colcalib folder. The colcalib folder is referenced by the <ColourFiles/> tag in the Portrayal Control file.
The colcalib folder contains five colour palettes. Each palette is based on an ECDIS (Electronic Chart Display and Information System) display mode.
If the display mode in the HPD editor is set to day_bright, the entry for the CHMGD colour token in the day_bright.xml colour palette is used.
<Colour Index="4" Type="RGB" Token="CHMGD"> <R>232</R> <G>69</G> <B>196</B> </Colour> |
When the ACHARE feature is displayed using the Day Bright palette, the feature is shown with the above RGB values. If the ECDIS display mode is changed, the feature is redisplayed using the colour palette for that mode.