The main toolbar in Grid+ provides all of the options most important for building and refining grid. The buttons from the main toolbar are shown in Figure 1 and their functions are described in the table below.
Figure 1 Main toolbar buttons.
| Buttons | Description |
|---|---|
| The New Project button clears all the data in the workspace, and the user will start working on a new project. |
| The Load button loads a project saved on the computer's hard drive or in some external memory. |
| The Save button saves the entire project to one .GPP file |
| The Import button imports external files (see below for details). |
| The Export button exports the grid to different grid types (see below for details). |
| Toggle the Layer Control on/off. |
| View full layer extent. |
| Restore the previous view. |
 | Select object |
 | Mode node: this allows to move grid node, polyline node, or spline node. |
 | Add node: this allows to will add a node in general. A node can be a grid node, a node of polyline, or splines. |
 | Delete node: this allows to remove the grid node, polyline node, or spline node. |
| Edit objects by polygon |
| Add a new polyline. |
| Add a new spline. |
| Undo operation |
| Redo operation |
| Create a grid from splines |
| Create a rectangular grid |
| Create a radial grid |
| Refine grid |
| Coarse grid |
| Orthogonalize grid |
| Merge two grids |
| Global settings |
| Measurement Tool |
| Frame control: To add the North Arrow and Scale bar |
The Import button provides a number of options as shown in Figure 2. These options are described in the table below.
Import Grid: open different types of the grid file as native grid type of Grid+, RGF grid, ECOMSED grid, SEAGRID, etc.
Import EFDC Model: open the EFDC input file (e.g corners.inp, dxdy.inp, lxly.inp)
Import Georeferenced Image: open a georeferenced background image (e.g *.jgw, *.geo)
Import Overlay: open an overlay file as shoreline, polyline, polygon (*.p2d)
Import Splines: open the splines file (*.spl), this is a native file created from Grid+
Import Labels: open the label file (*.dat, *.p2d), this file has three columns. Two columns for coordinates (X, Y), and the third column is label names.
Import Cross-Sections: open the cross-section file (*.ldb, *.p2d), this file has three columns. Two columns are for coordinates (X, Y), and the third column is for elevation.
Import DEM: open the DEM (Digital Elevation Models) file (*.txt, *.asc, *.grd, *.tb2). DEMs are files that contain either points (vector) or pixels (raster), with each point or pixel having an elevation value.
Import Scatter Data: open the scatter dât file (*.xyz, *.dat) this file has three columns. Two columns are for coordinates (X, Y), and the third column is for elevation.
Figure 2 Import Menu.
The Export button provides a number of options as shown in Figure 3 . These options are described in the table below.
Export Grid: export the selected grid layer to the native grid file of Grid+ (*.gpc), CVLGrid (*.cvl), Delft3D (*.grd), and others.
Export to EFDC: export the selected grid layer to the EFDC input file (including corners.inp, dxdy.inp, lxly.inp), these files can open with EEMS.
Export to Shapefile: export the selected grid layer to the shapefile which can open with ArcGIS, QGIS, Global Mapper, and others.
Export to KML: export the selected grid layer to the KML file which can open with Google Earth, Global Mapper, and others.
Export Graphics: export the workspace to an image file with various file formats as *.png, *.jpg, and others.
Figure 3 Export Menu.