In the AutoCAD ecosystem, .shx files are vector-based files that define either text fonts or shapes used in complex linetypes. Specifically, aeccland.shx is part of the object library.
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. Although the .shx file is the compiled version that AutoCAD actually uses, including the source .shp file can be helpful for troubleshooting or if you ever need to modify the shape definitions.
The most common time a user interacts with this file is when things go wrong. aeccland.shx
command to remove the reference, or substituting the missing font. Read more at Autodesk Community Missing Shx File(s) - Forums, Autodesk 10-Oct-2017 —
The aeccland.shx file belongs to the former category. It contains the vector definitions for specialized symbols that are commonly used in site design, landscaping, and civil engineering. These are things like specific tree types, fence lines (e.g., barbed wire or chain-link), property boundaries, or utility lines.
is a compiled shape file (hence the .shx extension) developed by Autodesk. It is specifically associated with Autodesk AutoCAD Architecture (formerly ADT - Architectural Desktop). In the AutoCAD ecosystem,
Depending on your security privileges and your project needs, use one of the following methods to resolve the missing file alert. Method 1: The Quick Relocation (Best Fix)
Copy this file to your current AutoCAD Fonts directory:
It compiles from an uncompiled ASCII text shape description file ( .shp ) into a lightweight, high-performance binary file ( .shx ) so AutoCAD can regenerate complex drawing maps instantly without experiencing hardware lag. Why Is the "Missing aeccland.shx " Error So Common? Although the
Note: Autodesk no longer officially distributes this file as a standalone download due to deprecation of Land Desktop.
Custom geometric symbols embedded directly into complex linetypes (such as custom lines representing property borders, fences, easements, or utility tracks).
The name is derived from the acronym (Architecture, Engineering, and Construction) combined with "land," indicating its specific intended use in land development and civil engineering drawings.
When you open a drawing created with Land Desktop or Civil 3D in a standard version of AutoCAD (such as plain AutoCAD or AutoCAD LT), you may encounter a warning that the aeccland.shx file is missing. This occurs because the drawing contains complex linetypes, blocks, or other objects that depend on shapes defined within aeccland.shx to display correctly. A primary example is its use by the AeccLand.lin file to provide specialized civil linetypes like tree lines, utility lines, or other common symbols used in site plans.
It belongs to AutoCAD Civil 3D (historically known as Land Desktop, hence the "land" in the name).