Combining vector features with terrain data opens additional analysis and data creation options with cut-and-fill volume calculations from polygon or linear features, flattened site plan creation, and Relative Elevation Model (REM) generation. Cut and fill calculations can be performed on 2D or 3D vector polygon features or along a line to simulate the digging of a trench. When working with a polygon a flat area of terrain can be created blending seamlessly into the surrounding terrain to simulate a flattened pad or building site. The ability to create Relative Elevation Models (REM) allows users to highlight terrain variation in an area of interest, to help visualize smaller terrain changes that may otherwise be hard to identify.
When importing a GeoPackage data set, all of the data will be imported into a Control Center group named after the input file, with each data set in its own layer. The name of the layer will be the same as the name of the table where the data is stored.
If this is checked, the data will be exported into a separate table for each layer (still based on feature type). If this option is selected, it is not necessary to type a table name. The layer name will be used for the table name. If a table name is specified, it will be used as a prefix with the layer name.
Importing Lidar data has been made easy in Global Mapper. Global Mapper offers native support for Lidar data. All ASPRS supported file formats (.las, .las, .gz, .laz, .tar, .gz, .tgz, .zip) can be directly imported through the Open Data Files option in the File Menu. There is also support for loading ESRI zLas files. After navigating to the saved file location and clicking open, the user will be presented with the Lidar Load Options dialog box. The Lidar Load Options dialog box enables users to filter and grid a point cloud prior to loading data into Global Mapper.
The dropdown menus and lidar toolbars have changed in version 25 in both Standard and Pro. Have no fear! These updates will make it easier for you to find and use your favorite Global Mapper tools. The Analysis dropdown menu has been divided into three separate menus: Raster analysis, Terrain analysis, and Lidar analysis. Additionally, the Lidar Analysis toolbar has been replaced with the Point Cloud Analysis tool, as described below.
Previously, all automatic classification tools were available individually from a shared toolbar. Running a point cloud through all of these tools required repetitive steps of setting resolution, bounds, and other shared settings between classifications and feature extraction. To streamline this workflow, all of the automatic classification tools, the segmentation tool, and the feature extraction tool have been combined into one tabbed dialog: The Point Cloud Analysis tool. Instead of opening each tool in its own window to run separately, here, you can check a box to enable Segmentation, Classification, or Feature extraction, all based on the same settings. These tools will appear as tabs on the right-hand side and can be docked anywhere in the workspace.
When the user clicks on a cell in the Length or Precision column, the column can be edited in place, allowing the user to type a new value directly into the cell. If the user types a lower value into the Length or Precision column, GM will display a warning indicating that that action may cause a loss of data. A Precision value can only be entered if the Type is 'Float'.
Create a Flattened Site Plan is a popular tool for preplanning the best location, elevation, and required earthworks for the creation of a flat surface in a terrain layer. A new option in the tool, Create an Optimal Flattened Site Plan, can take advantage of any flexibility in the exact placement and orientation of the flattened site. Global Mapper assesses the terrain in a specified location to find the optimal placement and orientation for the site that requires the least amount of earthwork. Once the optimal site has been calculated, the tool will provide measurements of the soil volume to be added or removed to create a level surface and a break-even elevation. The flattened site plan and other volume tools optimize the cut-and-fill values and even out the landscape into a flat surface using only the soil on site, minimizing soil or fill transportation costs.
Global Mapper has a unique layer styling strategy. When a vector layer is loaded, it is automatically assigned a feature type. These feature types include feature styles that determine symbology settings for 2D and 3D data display. Many feature styles are built into Global Mapper and can be found in the Configuration menu under Styles. These types come with predefined styles that can be edited, or a new style can be created with an image for a unique display of data.
Unless otherwise specified, the default style is Unknown Area/Point/Line Feature. Until recently, all Unknown layers were assigned the same style, whether they were imported or generated from tools such as Spatial Operations. To help distinguish individual layers, the Unknown style now defaults to assigning a random color from a prespecified palette. This color will change every time the file is reloaded into Global Mapper. However, when an autostyle is applied to a layer in a saved workspace, the color will remain consistent when the saved workspace is closed and reopened. In the Configuration menu, a new Select Palette button allows you to define the list of colors that Global Mapper will choose from for random assignment. You can choose from the list of built-in palettes or circumvent the functionality by limiting this to one color.
If the connection to an ArcSDE geodatabase has already been established in ESRI software, directly load the *.sde file into Global Mapper to quickly setup the connection. The *.sde file should be found in one of the following directories:
Occasionally you may wish to make copies of existing features or perhaps move features from one instance of Global Mapper to another. You can easily do this by first selecting the features, then either making a copy of those features (use Edit->Copy Selected Features to Clipboard menu command or Ctrl+C shortcut) or cutting those features to the clipboard (use Edit->Cut Selected Features to Clipboard menu command or Ctrl+X shortcut). Then, simply paste those features into any running instance of Global Mapper using either the Edit->Paste Features from Clipboard [Ctrl+V shortcut] or Edit->Paste Features from Clipboard (Keep Copy) [Ctrl+Shift+V shortcut], the latter of which keeps the features on the clipboard for additional pasting rather than wiping the clipboard clear.
In NOAA hydrographic surveys, the multi-beam and track line bathymetry are provided via the NOAA National Centers for Environmental Information (NCEI). However, access to the bathymetric data can be directly sourced from the NCEI at NOAA Bathymetric Data Viewer. This portal provides lidar but also land cover and imagery. The site boasts visualization tools, predictive tools, and tools that make data easier to find and use. Content comes from many sources, all of which are vetted by NOAA. All of these results can be imported into Global Mapper to integrate with your existing data.
Include View Bounds (for initial zoom in Global Mapper Mobile) will remember the current view extent in the exported file and recreate that view when the file is loaded into Global Mapper or Global Mapper Mobile.
If the spatial database contains vector data, the Spatial Database Import Options dialog will contain the Import Bounds tab. This tab allows the user to select a subset of the input data based on a bounding box. All geometries that intersect the bounding box will be imported into Global Mapper. This functionality applies only to vector data in a spatial database.
Previously, processing a point cloud required repeated steps as you opened each individual tool and specified settings such as bounds and resolution. The new Automatic Point Cloud Analysis dialogue combines these separate tools into one window. Some of these settings are shared not only between classifications but also between classification and extraction. To take it a step further, classifications can now be trained to fit your point cloud better or created from scratch to find unique features in the point cloud using the Custom Classification Training Tool.
Values set in this section tie into all applicable tools, saving you time and sanity. Feature Models apply to all classification methods and feature extractions, and it is a guiding part of Custom Feature Classifications. These are settings that may or may not need adjusting but are available.
Segmentation is a powerful tool in Global Mapper. It is a user-guided, automatic tool that breaks the point cloud into smaller groups called segments based on the spatial and attribute relationships between points in the point cloud. It finds objects in a point cloud by looking at the attributes and structure of the points. For example, to segment paint stripes on the road, you would look for points that make up a flat surface, have the same color attribute, etc. By segmenting a point cloud into smaller sections, users are better able to select clusters of points for manual classification or to train a custom classification.
I have recently made a survey using both the automatic option and the single point option within the reach view app. Exporting the points as CSV files and with a few modifications to the spreadsheet in excel (removing unwanted columns, placing the data into individual columns, creating a text file) the data can be uploaded successfully to Global Mapper in the correct positions, as the image indicates.
image7121108 98.5 KB
image1398375 17.6 KB
I am not getting the same results when I upload the LLH files from the automatic survey and follow the same process. The points upload but are geographically incorrect, 9000km incorrect to be exact.
This is the data uploaded to excel, which seems to have less data than the single-point survey.
image896774 19.4 KB
Is there something missing in the data from the automatic survey or am I missing a step?