Landmark Z-Map Vector Reader/Writer

Licensing options for this format begin with FME Desktop Professional Edition.

The Landmark Z-Map module provides the FME with the ability to read and write geometric data files which are compatible with Landmark Graphics’ Z-MAP Plus™ software. Z-Map is commonly used for interpretive surface, fault modeling, and mapping.


The Landmark Z-Map Vector Reader/Writer allows FME to read and write data in Z-Map non-grid formats.

Note: To read or write raster data using the Z-Map format, use the Landmark Z-Map Grid Reader/Writer.

Z-Map files store both feature geometry and attribution. A Z-Map file has the following file name extension:

File Name Extension



Z-Map data file

The extension is added to the base name of the Z-Map file. The base name is the feature name.

Reader Overview

Reading of Z-Map files is handled by two separate readers: a Landmark Z-Map Vector reader, and a Landmark Z-Map Grid reader.

The Z-Map Vector Reader reads polygons, lines, points, and text into FME.

Features are read from a single .dat file and are separated into Contour, Data, Fault, Vertex, or Text feature types. If a feature type cannot be determined, a Record feature type is produced. Additionally, Header, History, and Comment features are produced if they exist.

Writer Overview

FME provides separate writers to write Z-Map files: a Landmark Z-Map Vector writer, and a Landmark Z-Map Grid writer.

  • Vector Data: Use the Landmark Z-Map Vector writer.
  • Raster Data: Use the Landmark Z-Map Grid writer.

The writer documentation in this document is only for the Z-Map Vector writer. Refer to the Landmark Z-Map Grid writer documentation for information about writing rasters.

The Z-Map Vector writer creates and writes vector feature data to Z-Map files into the folder specified by the Writer Dataset. Existing Z-Map files with the same name specified are overwritten with the new feature data.

Note: Z-Map supports a maximum of 50 fields, including both geometry-related fields and user attributes. If too many fields are specified, the writer will error. Removing some user attributes will allow writing to succeed. For an additional option, see Z-Map Writer Parameters.

FME Raster Features

FME raster features represent raster data and use several concepts that are unlike those used in the handling of vector data. The topics below describe how FME processes raster data.

About FME Rasters Tiling and Mosaicking
Raster Properties Band Combining and Separating
Band Properties Band and Palette Selection
Palette Properties Raster Processing
Compression Raster versus Vector Features
Pyramiding Raster File Naming
Interleaving World Files
Interpretation and Data Type TAB Files
Palette Resolution  

Z-Map only supports rasters with a single numeric band.