Surveying Calculation Software

Software for triangulation, traverses, coordinate transformations, area calculations, profiles, and volumes.

TopCal 21 runs on Windows XP, Vista, and 7

Topcal21 supports projects, so you can organize your work in subdirectories and use more than one point file and observation file at a time.

Topcal21 includes a spreadsheet-style data window.

All tools use guided dialog boxes to help you with calculations.


TopCal21 includes the following tools…

Triangulation calculations.

Forward intersections.

Resections.

Orientation correction calculations.

Traverses.

Radial surveys.

Area calculations.

Generating drawings from points.

Coordinate transformation between different systems.

Generating point description sheets.

Calculating longitudinal profiles and cross sections.

Volume calculations.

Cut and fill calculations.

Least-squares adjustment of survey networks

Automatic sketch reconstruction from field codes.

Solving triangles.

Converting polar coordinates to Cartesian coordinates and vice versa.

Intersecting lines and circles.

Calculating distances in Universal Transverse Mercator (UTM) projection or geographic coordinates.

TopCal21 version history…

Ability to reread codes from point files linked to a sketch

Ability to associate elevation labels with a sketch code

New sketch codes for closing areas, continuing finished lines, scaling a symbol, scaling and orienting a symbol, or scaling a symbol in X and Y and orienting it

Ability to import/export drawing codes

Ability to change the separator characters used when reading sketch codes

Ability to sort systematic errors in the face right/face left (CD/CI) averaging tool

Ability to load a MicroStation cell file into the symbol library

Ability to load sketch codes to orient and scale point elements

Ability to skip reducing distances to the ellipsoid chord when working without a map projection as the coordinate system

New tool for importing DXF or DGN files into a point file and calculating stakeout data

New tool for calculating differential leveling networks by least squares

New option for defining the number of decimal places displayed during calculations and in generated reports

Ability to include sights with fixed azimuths from a gyroscope in the least-squares adjustment

New tool for calculating mixed two-point resections: systems with two angle-and-distance sights from an unknown point to two known points

New tool for adjusting areas to a specified value by moving one or more defining points

New tool for calculating random errors based on the instrument type and observation characteristics

The Traverse tool can save a diagram showing the stations.

The Least-Squares Adjustment tool can save a diagram showing the points and observations used in the calculation, horizontal error ellipses, and vertical accuracies for analyzing error propagation in the survey network.

New tool for calculating differential leveling from files stored by digital levels

Ability to draw lines, squares, rectangles, and symbols graphically by selecting points in the sketch

Ability to save sketch and point files in MicroStation DGN format

Ability to save sketch and point files in 2D DXF format

New tool for calculating Hansen resections

New tool for renumbering sights

New read/write format for La Técnica ZAS point and observation files

New tool for transforming between coordinate systems (for example, ED-50 to ETRS89 and vice versa) using NTV2 grids

New version 2007. Requires an upgrade from version 1.

New angular unit option: sexagesimal in pseudodecimal format

New tool for converting between different angular and linear units

Ability to perform affine transformations

New Leica GSI point export format

New tool for drawing rectangular entities

New tool for drawing square entities

New tool for drawing circular entities

New option for importing face left (CI) sights from Geodimeter files

New tool for calculating parallel entities in the sketch

New tool for splitting entities in the sketch

New tool for joining entities in the sketch

Ability to use the mouse wheel to zoom in the sketch window

New file importer for PENTAX survey stations

Ability to calculate traverses using self-orienting instruments (compasses or instruments with a gyroscope)

Ability to perform all calculations using the Lambert conformal conic projection with one or two standard parallels

Ability to calculate distances measured with stadia rods

Ability to calculate traverse distances using a single distance per leg

New tool for inverting the selection in documents

Ability to list and check sights not listed in the least-squares calculation

New tools for inserting symbols into the sketch, including a tool for creating those symbols

New tool for generating cross sections from point codes

Fixed an error when choosing the directory for new files not linked to projects

Added the ability to create cross sections from ASCII files

Fixed a problem when including scale factor calculation in least-squares adjustment with multiple fixed points and no distances

New tool for transforming files with geographic coordinates into the current point file and vice versa

Fixed an error when creating a new reference system from the point properties dialog box or creating a new instrument from the sight properties dialog box

Ability to transform between different reference systems

New tool for averaging repeated sights to the same point

The unit settings for the different files are saved to disk

Fixed a problem when calculating systematic errors outside a project

Fixed a problem when generating an HTML file from the Triangle Closure tool

Ability to save transformation parameters to disk in the Point Transformation tool

Fixed a problem when saving ground control point description sheets

Ability to load transformation parameters from disk in Helmert Transformation

Fixed a problem when updating and calculating sights from Generate Field Book

Ability to undo after calculating new points or sights

The scale factor is displayed when calculating traverses if it is used

The traverse length is displayed for open-ended traverses

Fixed a problem displaying meridian convergence when converting UTM coordinates to geographic coordinates

Ability to enter a scale factor when calculating traverses without a projection system

New tool for printing files

Ability to add multiple lines to a longitudinal profile

Ability to renumber the points in a file

The Cartesian-to-polar conversion dialog box also displays coordinate differences

Fixed a problem calculating UTM distances with points without elevations

New tool for renumbering point files

The point remains selected when generating points by converting polar coordinates to Cartesian coordinates

New importer for Topcon stations

New tool for configuring HTML output files

Fixed a problem displaying menus in Windows NT and 98

New tool for transforming geodetic coordinates referenced to the Struve ellipsoid and Madrid meridian into ED-50

Ability to specify different reference systems and units when defining point files

Ability to specify different instruments and units when defining sight files

New tool for calculating alternating traverses

Ability to choose whether to calculate the scale factor in point transformations

Fixed a problem with negative angles appearing when applying collimation or vertical index error

Fixed a problem updating "Undo Actions" in the "Point Calculations" tools

The application now does not use distances in any of its tools if vertical angles are missing

Stations are no longer recalculated in the Radial Survey tool

New 2D and 3D transformations using a centroid

New output reports in the Traverse and Radial Survey tools

Importing SDR33 and SDR2 files

Tool for removing the worst sight in Baarda's test

Tool for "undo" and "redo" on objects

Ability to add map sheets to the sketch and when exporting points