Selection Modes

Selecting multiple elements can get frustrating, especially if the project has a lot of complex data loaded. To simplify this, GeoHECRAS provides additional selection modes to assist the user.

From the toolbar, click on the Select tool and a tool space will slide out showing the available selection modes. Each selection mode is represented by its own icon.

Selection Modes Toolbar

The various selection modes are detailed below.

Select

The Select Mode is default selection mode. This mode allows you to select one element at a time.

Holding down the [Shift] or [Ctrl] key allows you to select multiple elements. Clicking on an already selected element will cause the element to become deselected.

Edit Vertices

The Edit Vertices mode allows you to edit the individual vertices that make up an element. Choose this mode and then click on the element to be edited. You will see all of the individual vertices that make the object become visible. These vertices can then be moved, deleted, or added to.

Edit Vertices

Vertices can also be edited by selecting the element and then pressing Function Key F4.

Select Window

You can perform a window selection by clicking and then dragging. Click the first point on the left side and drag to the right and then release the mouse. This will select all elements that are contained inside of the dragged window area.

Window Selection

You can also choose the Select Window tool from the toolbar to perform the same selection operation.

Select Window Crossing

You can perform a window crossing selection by going the opposite direction of a window selection. Click the first point on the right side and drag to the left and then release the mouse. This will select all elements that are contained inside and are touching the dragged window.

Select Window Crossing

You can also choose the Select Window Crossing tool from the toolbar to perform the same selection operation.

Select Polygon Window

Choose the Select Polygon Window tool from the toolbar. This tool operates similar to the Select Window tool, but you can define an unlimited number of points for the selection window. This will select all elements that are contained inside of the digitized polygon area.

Select Polygon Window

Select Polygon Crossing

Choose the Select Polygon Crossing tool from the toolbar. This tool operates similar to the Select Window Crossing tool, but you can define an unlimited number of points for the selection window. This will select all elements that are contained inside and are touching the digitized polygon.

Select Polygon Crossing

About the Author Chris Maeder

Chris Maeder

Chris is an experienced civil engineering and software technology leader, with over 30 years industry experience. With proven expertise in global software development, he has built engineering teams that adapt quickly, focus on what’s important and, most importantly, deliver. He is a licensed professional civil engineer with extensive experience in water resource engineering. He has performed and supervised engineering projects in urban stormwater drainage, transportation and roadway drainage, storm sewer design, detention pond design, stormwater quality, green infrastructure, watershed management planning, wastewater sewers, water distribution networks, pump stations, FEMA flood studies, bridge and culvert design, bridge scour and armoring, dam failure analysis, seepage and groundwater modeling, and environmental permits.

Related Articles