When converting coordinate data between different datums, obtaining a specific accuracy may require time-dependent processing when converting. This is because one datum may be defined relative to another and in a way that includes coefficients that are a function of time. Even in the case of a single datum, a measured position may have different…
The GeoCue software suite uses client/server architecture. Production staff use a GeoCue Client installed on their local workstation to access projects resident on a GeoCue Server. The GeoCue Server is normally installed on the same local network as the workstations hosting the Clients, but hosted on a separate machine. Technically, any Client will be able…
GeoCue’s Distributed Project Management System (DPMS) for GeoCue Project Portal is being used for the Florida Department of Emergency Management Coast Mapping Project (FDEM). The Master Project for FDEM is being maintained by URS Corporation using GeoCue Enterprise Server and GeoCue Project Portal. Project Portal is an enhanced version of GeoCue Web Server. The coordination…
GeoCue Server runs on top of a SQL database. The database stores all the metadata about your projects as well as all internal links to your geospatial data stored in the GeoCue warehouses. The database may be a full SQL database installation or a limited edition of SQL such as Microsoft SQL Server Express (Express)…
GeoCue Server runs on top of a SQL database. The database stores all the metadata about projects as well as all internal links to the geospatial data stored in the GeoCue warehouses. The database may be a full SQL database installation or a limited edition of SQL such as Microsoft SQL Server Express (Express) or…
This technical note provides instructions for adding logical or ‘Yes/No’ steps to a GeoCue checklist. These types of steps can be useful for tracking work that is not linked to a particular production tool. A common example would be adding a “Ship Data to Client” step at the end of a workflow. They can be…
GeoCue offers limited support for Mean High Water Tidal Datums. In GeoCue 2013, thirty-eight Mean High Water project areas (aka VDatum project areas released by NOAA on 13Aug2013) are supported and others will be added as they become available from NOAA. The twenty-five older VDatum project areas are also still included in the product. Transformation…
In the previous articles we provided an introduction to coordinate systems, geoids, datums and projections. This background information was needed in order to delve into more details on transformations and changing projections in the various software packages to help you do more with LIDAR data. This article will provide the information into transformations and changing…
The NOAA Mean High Water (MHW) files (mhw.gtx) and the corresponding TSS files (tss.gtx) can be used to create GeoCue vertical datum grid files that support the Mean High Water Tidal datum in GeoCue. One MHW/TSS pair exists for each of the thirty eight NOAA defined coastal project areas. This note describes the GeoCue workflow…
Geoid models in GeoCue are grid-based. The required file format is simply a rectangular grid of geoid undulation values, N, where h = H+N, with h representing the ellipsoid height and H the geoid height. The grid contains only undulation values. The grid points are required to be at regular geographic intervals in latitude and…
