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OpenGround Wiki How Do Material Symbols (Legend Codes) Work
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     Questions about this article, topic, or product? Click here. 

    How Do Material Symbols (Legend Codes) Work

    This article describes how graphics work within OpenGround Cloud Professional to symbolize material types (soil and rock) and backfill on Log and Quick Section reports. Most typically, these graphics are associated with Legend Code Picklists within OpenGround Cloud.

    The graphics associated with each Legend Code are defined under System>Configuration Packs>Manage Picklists. See this article for more info about editing Picklists. Graphics can be modified by clicking Edit Image and selecting a new image file. OpenGround Cloud uses bitmap images. New images can be created and edited in any 3rd party bitmap editor, such as GIMP, Paint.NET, or Microsoft Paint. Graphics can be added to a template in Template Studio using the Graphics Bar object.

    On reports, the image is repeated horizontally and vertically to tile the graphic column. So, it is important that the base pattern within your image will tile appropriately. Note in the example below how some patterns align at the top and bottom of the image (as well as side-to-side). This is common for many typical patterns used to represent soil and rock. Bear this in mind when designing symbols, but note that it may be simpler to create symbols that don't need to match along boundaries.

    Another important consideration when creating new Legend Code images is the dimensions of the image (in pixels), as this will impact the size of the image on your report. Very large images will appear very large on reports, and some patterns that are commonly used are best-suited to fit horizontally across an entire column. Accordingly, best practice is to create images with a desired column width in mind. The table below summarizes recommended image widths for various column widths for images created with a resolution of 96 ppi.

    Column Width (mm) Image Width (pixels) at 96 ppi
    6 50
    7 58
    8 67
    9 75
    10 84
    11 92
    12 100
    15 125
    20 167
    25 209
    30 251
    General Column Width (mm) * 8.35

    For reference, Bentley has created a set of Legend Code images based off the gINT Standard US symbols (available in Component Center) that have been designed for a 7 mm-wide column.

    There is a FitToWidth option for Graphics Bar objects within OpenGround Cloud Template Studio, and it is recommended that this option is used. This allows some flexibility in image dimensions. However, if your Legend Code images are largely missized for the column, this option will scale the graphics on your report.

    Color Coding

    An alternative to pattern-based graphics is to use solid color fills to represent soil and rock material types. There are many benefits to this approach, such as no tiling/scaling issues, cross-platform compatibility, and easier distinction between changes in materials. Please see this article for more information on implementing color-coding on your OpenGround Cloud Professional reports.

    Additional notes:

    Note that OpenGround Cloud also utilizes Point Symbols and Connector Symbols, which are more typically used to depict Sample types, Water Levels, and other discrete graphics. Also note that hatching within the OpenGround Cloud Civil 3D extension behaves differently than graphics within OpenGround Cloud Professional reports.

    • Legend Codes
    • graphics
    • symbols
    • OpenGround Cloud Professional
    • openground cloud
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    • Jesse Greenwald Created by Bentley Colleague Jesse Greenwald
    • When: Thu, Apr 22 2021 1:35 PM
    • Jesse Greenwald Last revision by Bentley Colleague Jesse Greenwald
    • When: Fri, Mar 31 2023 2:22 PM
    • Revisions: 7
    • Comments: 0
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