Consistent Coordinate Systems
C Tech's software is designed to work with many types of data. However, because you are creating objects in a three-dimensional domain (x, y, and z extents) you must have all objects defined in a consistent coordinate system. Any coordinate projection may be used, but it is essential that all of your data files (including world files to georeference images) be in the same coordinate system.
Furthermore, if volumes are to be calculated the units for all three axes (x, y, and z) must be the same. We strongly recommend working in feet or meters. Other units may be used (even microns!), but you may have to perform your own unit conversions when computing volumes with volumetrics.
Though all of your analysis must be performed in a consistent coordinate system, we do allow you to have data files with different units. If you choose to do this you must use the reprojection capabilities of the Projecting File Coordinates options in your data files.
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