How to reduce the file size?

Have you ever wondered why the file size of one of your map is so large? Then it’s probably time to clean up your map.

Here are some suggestions how you can reduce the file size:

#01: Optimize/Repair

Choose the Optimize/Repair command in the Map menu to optimize (reduce) the size of the map file and repair damaged objects. With edit operations such as deleting objects, empty space is created in the map file. This function removes this empty space and therefore reduces the size of the map file. It’s therefore highly recommended to run the Optimize/Repair from time to time.

Optimization result of a map.

#02: Select and delete unnecessary objects

In the picture example above, you can see that there are many objects without symbols, unknown symbol or invalid symbol type.

Choose Select Objects by Symbol in the Select menu to select all objects with certain symbols or in a certain layer.

You can now assign the selected objects to new symbols or (what is probably more often the case) delete the objects.

Select By Symbol.

#03: Smooth not smoothed contours

When creating contours with the DEM Import Wizard, you can choose to create not smoothed contours. These contours consists of many vertices and let your file size increase.

Select the contours and run the Smooth command in the Topology menu to reduce the amount of vertices. Make sure to choose the tolerance so that no information is lost. Run the Optimize / Repair command afterwards.

PS: To select all contours at once, either right-click on the contour symbol in the symbol box and choose Select Objects by Symbol or use the Select Objects by Symbol function.

Select contours and run the smooth command.

#04: Remove unnecessary areas

If you import existing geodata, e.g. by using the New Map Wizard, you probably import an area too large. You can Crop the map to the size of your actual project scope and remove unnecessary areas. Run the Optimize / Repair command afterwards.

Crop part of your map that you do not use.

OCAD runs on Windows 11

Microsoft has recently released a new update with Windows 11, which can be installed on newer computers.

We have tested OCAD on Windows 11 and have not encountered any problems or received any reports from other users.

OCAD can be used as usual on Windows 11. Only the dialogs appear in a slightly different style.

Copy Obejcts and Symbols between Maps

Did it ever happen to you that you wanted to add objects or symbols from one map to another map?

As long as the symbols, respectively color table of the two maps is identical, a simple copy/paste is sufficient.

It becomes more challenging if this is not the case. That’s why we have created an OCAD Wiki page called Copy from Map to Map for this purpose.

You also learn how to create an own symbol set with custom symbols.

Custom Symbol Set in OCAD with own symbols

New MTBO Symbol Sets

With the latest OCAD Update, we added new symbol sets for mountain bike orienteering (MTBO). The symbol sets are based on the final draft of the ISMTBOM 202x, released by the Internation Orienteering Map Commission, in cooperation with the MTBO Commission. Please find more information here.

In OCAD, you can use the symbol sets for testing in different ways:

  • To start a new MTBO Map
  • To update an old MTBO Map
  • To change an Foot Orienteering map into a MTBO map

Start a new MTBO map

We recommend you to start a new map with the New Map Wizard. There you have the possiblity to directly georeference the map and import OSM data and convert these data into OCAD symbols.

Start the New Map Wizard (menu File > New Map Wizard). Choose optionally to Import OSM data.
Load the ISMTBOM 202x symbol set and the OSM to ISMTBOM 202x.ocdCrt. In this example, we create a map for 15’000 scale. If you like another scale, you can go to menu Map > Change Scale after you run the Wizard. Enlarge/reduce the symbols, when you change the scale.
Choose a map extract and set the coordinate system. The map extent you see in the window will be imported into OCAD. Alternatively, specify coordinate values. Click on Create when you are done.
You will get a georeferenced map with the MTBO symbol set and OSM objects.

To start with a new map, you can also go to menu File > New and open the ISMTBOM 202x Final Draft symbol set.

New 15’000 map: Choose the ISMTBOM 202x Final Draft 15’000.ocd. No symbol scaling needed.

New 12’500 / 10’000: Choose the ISMTBOM 202x Final Draft 15’000.ocd. Choose 12’500 / 10’000 as map scale. Scale symbols.

New 7’500 / 5’000 map: Choose the ISMTBOM 202x Final Draft 5’000.ocd. This symbol set contains additional sprint symbols. Choose 7’500 / 5’000 as map scale. No symbol scaling needed.

Update an old MTBO Map

In OCAD, you can use the function Symbol Set Conversion to easily update a MTBO map with an old symbol set to the new symbol set.

Open an old MTBO map. Apart from ISMTBO2010 symbols, this map example contains additional (own) symbols.
Start the Symbol Set Conversion (menu Map > Symbol Set Conversion). Choose the same Symbol Set and CRT file as you see in the image above. Activate the Scale Symbols option if the map scale of both files is different, e.g. you convert an old MTBO map in scale 10’000 to the new ISMTBOM 15’000 symbol set. Have a look at our Wiki page to understand the functionality of the Symbol Set Conversion.
Updated map with new MTBO symbol set and some additional symbols on top.

Change an Foot Orienteering map into a MTBO map

Use also the Symbol Set Conversion for that purpose.

OCAD Sample Map B├╝renflue (File > Open Sample Map).
Start the Symbol Set Conversion (menu Map > Symbol Set Conversion). Choose the same Symbol Set and CRT file as you see in the image above. Activate the Scale Symbols option if the map scale of both files is different. In our example we convert an old ISOM 2017 map in scale 10’000 and use the ISMTBOM 15’000 symbol set for conversion. But the map scale should still be 10’000 after conversion. That’s why we scale the symbols. Have a look at our Wiki page to understand the functionality of the Symbol Set Conversion.
Converted map from ISOM 2017 symbol set to new MTBO symbol set.

MapAnt Switzerland

After the release of a pilot project for a Swiss MapAnt last summer, we are happy to present our final MapAnt Switzerland, which covers the whole of Switzerland.

The creation of this map became possible after the Federal Office of Topography swisstopo made many of its data available online free of charge as Open Government Data (OGD) this March.

MapAnt can animate to discover new areas. However, please note, that the possession of this map does not entitle to any orienteering activities in the terrain. Before using this map in the terrain, it is mandatory to contact the local orienteering club or the regional orienteering association to clarify forest use, private property, nature reserves, wildlife reserves, protected areas and other restrictions.

You can find more information about the development of MapAnt in our OCAD Wiki.

Have fun exploring Switzerland digitally!