Tips

• When you are drawing polygons, you can draw holes inside edited polygons by holding down Shift.

• You can copy the attribute table to a spreadsheet like Excel (or any program that accepts tab-delimited data). In the attribute window, press Ctrl+A to select all the rows, then press Ctrl+C to copy the data to the clipboard. You can then go to your spreadsheet program and paste in the data.

• If you have a layer containing a single feature that you want to use for the fence, simply rename the layer to "Fence".

• If you need to pan during drawing: 1) press and hold down the "Shift" and "Alt" keys, 2) pan, 3) release the keys, 4) go on drawing

• If you want to open ECW raster image, find on web ER Mapper ECW drivers (NcsCnet.dll, NCSEcw.dll and NCSUtil.dll) and copy them in Openjump/LIB/EXT folder. Those files can be find on ER Mapper web page as a part of Image Compression SDK. Read carefully the license details. This tip works only with Windows XP/9X. However another option is to register NCSUtil, NCSCnet, and NCSEcw with the PATH environment variable (Win32), or the LD_LIBRARY_PATH (Unix). The parameters of the virtual machine can specify their location too using the VM property:

-Djava.library.path=<path_to_ncs_libraries>. 

Alternatively, a file jncsclasses.properties in the user's home directory can specify the location.