Category Archives: OCAD 12

Insights into a camp of the Swiss Orienteering Team

In the beginning of March, the Swiss National Team was training in Portugal for 9 days to prepare the new season. OCAD is a long-time partner of the Swiss Orienteering Team and was of course widely used to set courses and prepare maps before the camp: 8 different course setters prepared 19 trainings with a total of over 400 controls.

To guarantee highest quality of the trainings, lot of work had to be done behind the scene. An internal document lists the key points:
– Always check if the scale is correct.
Cut the control circles and connection lines where needed.
– Check the control description.
– Are the North lines on the map?
– On the map with all controls, the control numbers should not cover the control location.

Furthermore, the course setters always use the same course setting template. For every scale, there’s a template, which contains additional symbols, like frames for printing, text symbols or a special North Arrow. This results in a uniform appearance and underlines the common spirit. Also, it guarantees the same color settings for all trainings.

All final courses were exported as GIF’s and double-checked. When everything was in order, PDF’s for printing were created. The printed maps were controlled once again. The result of this effort: Perfect trainings!

Facts and figures: 36 Athletes, 9 Staff, 1100 printed maps (+250 maps from competitions), more than 15h of total work alone for the relay training (setting the course, putting out 50 controls and SI-units and collecting the afterwards).

Links:
– Compose Course tool for fast and easy Course Setting
– O-training with OCAD
– Facebook page of the Swiss Orienteering Team

Relay Training

OCAD 2018 becomes OCAD 2019

OCAD 2019 is just a new name to underline that you are using a software that is constantly evolving and which contains new features and standards. It’s not a new version. If you are on a subscription model, you will automatically receive OCAD 2019 with the latest Service Update and do not need to purchase any new licenses.

For technical reasons, OCAD installation folders, etc., will continue to be marked as OCAD 2018. However, the general strategy is to omit the year in the name of each OCAD edition in the future.

OCAD2019 Splashes

Change between Drawing Modes

This function makes it easier to combine curves and straight lines. Furthermore, this drawing mode might be more intuitive for people new to OCAD.

Change between Drawing Modes

First activate the option Curve mode: Change to straight line mode when clicking in drawing area in the Preferences -> Drawing and Editing tab.

Start drawing the curve as usual. To draw a straight line, just click in the drawing area. This way, you can easy switch between straight line mode and curve mode. Double click the left mouse button to finish drawing.

Animation and more information.

 

Declination / Rotate Map

Declination – Background Information

Magnetic meridians. Source: Wikipedia.

Does a compass point to the geographic North Pole? No. Does a compass point directly to the magnetic North Pole? Not necessarily.
The compass is always oriented in the direction of the local magnetic meridians and therefore usually shows neither exactly to the geographic nor straight to the magnetic North Pole. The Declination is defined as the angle between the direction of the magnetic meridians and the direction to the geographic North Pole at the observation site.
If magnetic north lies west of geographical north, the declination is called western and counts as negative; if magnetic north lies east of geographical north, the declination is called eastern and counts as positive.
An observer in middle and northern Europe sees the Arctic magnetic pole to the west of the geographical North Pole. At the same time, however, he notes that the local magnetic meridians are pointing in a direction just east of the geographical pole, so that the declination here is a few degrees east.

World Magnetic Model. Source: NOAA.

Declination varies both from place to place and with the passage of time. The reason for this are complex fluid motions in the outer core of the Earth which cause the magnetic field to change slowly with time. That’s why old maps have to be adjusted to the new declination time by time.
The declination in Switzerland is currently only around 2° and is therefore neglected in almost every map. 1° difference would mean 1.7m deviation for 100m. In the example below, you should miss the control by about 10m on the right (purple x)  when running straight with your compass ( 2.1° declination, 280m distance).

How can you adjust the Declination in OCAD?

In OCAD, there’s a new function called Rotate Map to Magnetic North.
This function considers the Magnetic declination and the Grid convergence of your current position and suggests by how much the map should be rotated. Learn more about this new function here.

In the Map Menu, there are two more functions where you could rotate your map. Do not edit the Angle in the function Set Scale and Coordinate System. Only change the angle there, if you start a new map and haven’t drawn any objects yet. The function Rotate Map is basically the same as Rotate Map to Magnetic North, but not that sophisticated.

Things to consider

Every time you rotate the map, the position accuracy of your objects is reduced a bit due to rounding differences. Therefore, we recommend not to adjust your map every year to the current declination, but maybe every fifth year.

A possible workflow would also be to rotate the map only before you print and export it. This way, you avoid rounding errors. The disadvantage is, that if you rotate the map at once with a big angle, non-rotated objects oriented to north could possible suddenly interact with rotated objects in a negative manner. Therefore, we do not recommend this workflow.