Custom symbols

gearfreakgearfreak Global Mapper UserPosts: 17
edited April 2010 in Technical Support
Mike,

I use a variety of National Park Service symbols as custom points in my project. I read in the help file that vector symbols imported through the simple ascii process will scale better than custom icons from images. I'm not sure I understand the format of the text file though. Can the GM_SYM functionality be used to import the attached graphic and therefore provide a better appearance? Thanks!

Ray

Comments

  • global_mapperglobal_mapper Administrator Posts: 17,238
    edited April 2010
    Ray,

    You could use the GM_SYM functionality to describe your shape as a vector, but it would take quite a few vertices. It looks like you would have 5 separate filled area definitions, one for the outer black rectangle, then 4 white filled areas for the 4 separate shapes defining the symbol.

    Here is a sample showing the horizontal bedding symbol definition from Global Mapper:

    PEN_STYLE=SOLID
    PEN_COLOR=RGB(0,0,0)
    PEN_WIDTH=1
    -7,0
    7,0

    PEN_STYLE=SOLID
    PEN_COLOR=RGB(0,0,0)
    PEN_WIDTH=1
    3.000,0.000
    2.942,0.585
    2.772,1.148
    2.494,1.667
    2.121,2.121
    1.667,2.494
    1.148,2.772
    0.585,2.942
    -0.000,3.000
    -0.585,2.942
    -1.148,2.772
    -1.667,2.494
    -2.121,2.121
    -2.494,1.667
    -2.772,1.148
    -2.942,0.585
    -3.000,-0.000
    -2.942,-0.585
    -2.772,-1.148
    -2.494,-1.667
    -2.121,-2.121
    -1.667,-2.494
    -1.148,-2.772
    -0.585,-2.942
    0.000,-3.000
    0.585,-2.942
    1.148,-2.772
    1.667,-2.494
    2.121,-2.121
    2.494,-1.667
    2.772,-1.148
    2.942,-0.585
    3.000,0.000

    Note that this is defined as two lines. For areas you would add CLOSED=YES to the parameter list at the type of each set of coordinates, as well as a fill color via FILL_COLOR=RGB(255,255,255) [this is for white, use 0,0,0 for black].

    Let me know if I can be of further assistance.

    Thanks,

    Mike
    Global Mapper Support
    support@globalmapper.com
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