[Qgis-user] FGDC Geology Symbology for QGIS

[Stefan Revets]

 >From: Torsten Lange <torsten.lange at mail.de>
 >Hi,
 >1. Stefan, thank you for uploading the symbology.
 >2. A first time "load symbology" question: How do I import a new 
 >symbolgy or in what folder I have to put it?
 >Thanks, Torsten

Hello Torsten,

You can import new symbology via the Style Manager, using the Share 
button and then the Import choice. That allows you to navigate to 
wherever you put the various relevant .xml files (in the FGDC geology 
case, these are the contacts.xml, faults.xml, folds.xml, and 
joints.xml): it does not really matter where you keep these files (my 
personal preference is to have a dedicated qgis_projects folder in which 
I can assemble and organise projects as well as any support files I feel 
I may need).
Once the symbology has been imported, it will be available for any 
project you care to pursue.
Best wishes,

Stefan


 >From: Lester Anderson
 >Hi Stefan,
 >Thanks for compiling the symbology managed to load all fine. The only 
 >issue I spotted is with dashed or dotted line types. These do not seem 
 >to contain the simple line component at the base (for line type etc) 
 >and so these dashed/dotted versions show the markers on a blank space 
 >and not following the line as when one adds a marker to a line. Not a 
 >big deal. But thought it worth mentioning.
 >Lester

Hello Lester,

If I understand you correctly, then the reason you do not see dashed or 
dotted lines is because they are too fine to be visibly rendered by 
qgis. When you generate a map, these lines will be visible in the pdf, 
tiff, or other output you chose.
When compiling the symbology, I discovered that qgis is not sufficiently 
precise with the thickness, lengths and separations between dashes. As a 
result, I defined a number of svg lines so that the distances and 
separations defined in the FGDC standard could be implemented. That is 
also why I have included the various .xml files: these combine the 
relevant .svg symbols and line segments into the hopefully correct FGDC 
symbol.
Best wishes,

Stefan