A new function has been added to the latest OCAD 2018 Service Update: Vectorize automatically cliff features.
With OCAD, you can now automatically convert cliff features from the Slope Gradient calculation into vector symbols.
Please find more information in our Wiki.
To use this function, you need the latest OCAD 2018 Service Update, which can be downloaded from the Help -> OCAD Service Update function in the OCAD program.
If you have objects with congruent vertices and/or neighbouring segments, you can move their vertices and segments together.
First select the vertex or the segment to be shifted, then press the Tabulator key and move the vertex/segment.
For Animation and more Information, please visit our Wiki.
In the OCAD Course Setting module, you can export your courses as KMZ files and watch them later in Google Earth. KMZ files can contain both vector and raster objects.
Originally, this tool was developed for Trac Trac and their application O-Track. O-Track is a service which makes tracking, viewing and sharing orienteering easy and fun for both beginners and professionals.
This is how it works:
– Be sure your map is georeferenced and a coordinate system is set.
– Choose the Courses (KMZ) command from the Export submenu of the Course Setting menu.
– Select the desired extent and click on Export.
– Select which courses/classes shall be exported. Select multiple courses/classes by holding the
Ctrl key or click the Select all button to select all courses/classes. All courses/classes will be saved in the same KMZ file.
– Click on the exported KMZ file. Google Earth will start automatically. You will find a folder for each course in your Temporary Places with the course maps and all controls. A PNG file will be created for each course. The controls will be displayed by placemarks.
See also or Wiki for more information.
OCAD is a Windows software. However, OCAD runs on Ubuntu using Wine.
We installed Wine on Ubuntu and run OCAD afterwards without any problems.
Wine is a free software and enables Linux users to run Windows applications without a copy of Microsoft Windows. Install Wine from the Ubuntu Software Center.
TPI stands for Topographic Position Index, which is defined as the difference between a central pixel and the mean of its surrounding cells. Choosing this option, OCAD first creates a smoothed DEM using TPI and calculates contours afterwards.
Some details may get lost, but results are very satisfying in constant slopes. Use these contours, if you want to adopt the calculated contour lines directly to your map.
In the DEM Wizard you can create “normal” custom contours (no smoothing) and/ or smoothed contours using TPI in one single step:
- Choose the desired amount of contour and the interval.
- Assign a line symbol for each type appears. By default, the first three line symbols in the settings are pre-selected.
- Click on “Load symbols from template…” to get 12 line symbols at the bottom of your symbol box, which can be used for the settings.
- Use different symbols for depression to distinguish depressions from hills.
As mentioned in the beginning, TPI contours were derived from a smoothed DEM, means some details will get lost. The following recommendations can be made:
- For mapping in the terrain, use the custom contour lines as background, where you have all details on it.
- To draw contour lines on the PC, first calculate and load the TPI contours and adapt them afterwards where needed. Use the Reshape function for that.
Especially in steep and constant slops, the biggest part of the TPI contours can be adopted to your map without redrawing. You gain much time like that.
For further information, please visit our Wiki.